KR100567041B1 - Iron core exhibiting excellent insulating property at end face, and method for coating end face of iron core - Google Patents

Abstract

It provides a means to perform the insulation treatment of iron core cross section which is excellent in insulation, corrosion resistance, adhesion, heat resistance, and magnetic property improvement effect in a short time at low temperature without pretreatment such as degreasing cleaning or annealing. An iron core comprising a dried film of a silicone polymer, a modified silicone polymer, and / or a mixed silicone polymer, having an average film thickness of 0.5 µm or more, a breakdown voltage of 30 V or more, and a heat resistance in air having an insulation film of 400 ° C or more. Moreover, the manufacturing method consists of an immersion process and spraying process after iron core formation using the 1 type (s) or 2 or more types of a pure silicone polymer, a modified silicone polymer, and / or a mixed silicone polymer as an insulation coating agent.

Description

IRON CORE EXHIBITING EXCELLENT INSULATING PROPERTY AT END FACE, AND METHOD FOR COATING END FACE OF IRON CORE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron core obtained by coating a cross section formed by shearing, punching, or the like of an iron steel sheet by an insulating coating having excellent insulation, adhesion, corrosion resistance, and the like, and an insulation treatment method thereof.

The present invention also relates to a transformer, a method for manufacturing the same, and a method for manufacturing the same, and a method for manufacturing a high temperature operating electric device and a method for applying and attaching an organosilicon compound to improve properties and to prevent short circuit.

In the present specification, the transformer refers to a transformer in a broad sense, which is a stationary apparatus including a high frequency region used for voltage change for stacking or winding magnetic materials. The magnetic material refers to a soft magnetic material having a known ferromagnetic property used in large to small transformers such as grain-oriented electrical steel sheets, non-oriented electrical steel sheets, amorphous metals, permalloy and the like.

When non-oriented electrical steel sheet is used for motor iron core or stationary machine, slitting the electronic steel coil, punching to a predetermined shape, laminating a predetermined number of sheets, welding, caulking, bolting and band clamping The iron core is made by clamping by band clamping, mold or bonding. On the other hand, when a grain-oriented electrical steel sheet is used for a transformer iron core, the core is made by slitting the coil, making a predetermined shape by a process of shearing or punching, and then laminating or winding a predetermined number of sheets. There are three main types of transformers;

1) Mainly medium to large "stacked transformers" made of laminated cores of oriented electrical steel sheets.

2) Small "wound transformers" made of oriented electrical steel sheets or amorphous metals wound into iron cores

3) "Small transformers" (EI cores, etc.) containing switching power parts attached to the apparatus, mainly made of laminated and wound non-oriented electrical steel sheets, oriented electrical steel sheets, amorphous metals and permalloy.

Medium and large transformers, which are called multilayer transformers of 1), are transformers installed in ultra-high voltage substations and primary or intermediate substations, and are laminated with directional electrical steel sheets and fixed with bolts, nuts, or special tapes, or annealed or varnished as necessary. It is prepared by treatment.

2) In the case of a small transformer called a winding type transformer, a small transformer for distribution located downstream of an intermediate substation is formed by winding a slit directional electrical steel sheet and an amorphous metal into a predetermined size, and then strain annealing or magnetic annealing. After reshaping, it is assembled by winding the wire.

3) A small transformer attached to an electric device such as an EI core can use a non-oriented electrical steel sheet as well as a directional electrical steel sheet. These are sheared or punched to a predetermined size, and then laminated and molded. Sometimes, it is rolled up.

Moreover, the above classification is a division in Japan, and in the foreign countries, especially Europe, there is no classification of 2), so that the small size of 1) is used.

As mentioned above, in order to ensure the efficiency of all transformers, electronic steel sheets and amorphous metals are mainly used as iron core materials.

Among these, the electrical steel sheet is manufactured by a steel company, and the final form in the steel company is a coil-shaped steel sheet having a thickness of usually 0.20 mm to 0.70 mm. Slit it to the required width (width cut), shear it to the required length and cut it to the final size.

The surface of the electrical steel sheet is usually subjected to an insulation coating treatment. Varnishing or bluing annealing is carried out for the purpose of improving the corrosion resistance and insulation of the surface or the core cross section (machined surface by punching, shearing, etc.). The surface insulating film of an electrical steel sheet used by such a method affects corrosion resistance, punching property, weldability, and insulation property. In particular, regarding the improvement of the insulation, many studies have been conducted in view of the improvement of the insulation between the steel sheets during lamination in order to suppress the increase in iron loss caused by the eddy current loss.

Conventionally, as an insulating coating agent on the surface of a steel sheet, an inorganic insulating coating film is used in the case of a grain-oriented electrical steel sheet, and an inorganic, organic type, and inorganic-organic composite coating film in the case of a non-oriented electrical steel sheet has been applied according to a use use or an objective. In the case of grain-oriented electrical steel sheet, Mg ₂ SiO ₄ called forsterite is formed during the secondary recrystallization annealing process, and heat-flattening treatment of 800 to 900 ° C. is performed to eliminate the coil set and the denaturation. In order to do this, an insulating coating having excellent heat resistance is required. In addition, in the grain-oriented electrical steel sheet, the effect of improving iron loss and self-modification characteristics due to film tension is great. As described above, the organic insulating coating is not suitable for the grain-oriented electrical steel sheet. In general, the inorganic coating is excellent in heat resistance and weldability, but weak in punching. On the other hand, the organic coating is excellent in punching and adhesion, but has a disadvantage in that heat resistance and weldability are weak. In the non-oriented electrical steel sheet, in recent years, in order to solve these disadvantages, an inorganic-organic coating which can exhibit intermediate performance has been generally used. However, only the insulation film formed at the time of steel plate manufacture does not have sufficient insulation, or when including an annealing process, since insulation falls considerably, insulation, such as a varnish process, is necessary.

In particular, in recent years, it has been found that the insulation of iron core cross sections formed by punching or shearing has a great influence on the iron core efficiency, and the necessity of developing industrially excellent iron core cross section treatment technology has increased. However, while the method of insulation treatment of cross sections of iron cores which has been generally performed in the past is considerably effective for improving corrosion resistance and insulation, the adhesion, film strength and insulation are insufficient.

For example, in the case of the bluing treatment, not only the insulation and the corrosion resistance are weak, but also the stability is low, and the cost for the heat treatment process is greatly increased.

In addition, in the varnish treatment mainly composed of organic compounds or organic compounds, corrosion resistance and insulation are effective as they are, but adhesion, film strength, insulation and heat resistance are insufficient. In particular, the problem of poor wettability requires cleaning or annealing as a pretreatment. Moreover, also in heat resistance, it is not suitable when the heat processing process, such as aluminum die casting, is included in an iron core processing process.

In addition, in the case of inorganic insulating coating treatment such as phosphate, pretreatment is required as in the organic or semi-oil coating treatment, and high temperature drying is required. Even in film performance, there is a problem that the thick film is difficult, the adhesion is weak, and the insulating film is peeled off due to the annealing. In these prior arts, there are many problems in terms of working environment and efficiency, and further improvement is desired.

In addition, synthetic resin insulating materials such as phenol resin laminates, silicone resin laminates, and phenol-formed products are used as the insulators, but they are not directly applied to the cross-sections of the iron cores, but they are wound or adhered as formed products. Insulation deterioration cannot be prevented.

In addition, in recent years, transformers using amorphous metals as iron core materials have also been produced, but in the manufacture of transformers, because of so-called "weak strength", the amorphous foil "fastens" during core insertion (lacing) ", thus fastening. This "tear" preventive measure is necessary, and since the iron core of the finished transformer is mainly immersed in oil, temporary fixation and fixation liquids for this "tear" prevention are required for oil resistance. There are inherent limitations to the properties required for hygiene.

As the electric device, there are an electronic device such as a motor, a driver, a generator, a transformer, a reactor, or a heater. Electronic devices generally include a conductive wire for flowing a current and a magnetic circuit for flowing a magnetic flux.

High current flows through the wires to achieve higher output power. However, if a large amount of current flows through the conductive wire, the conductive wire or the surrounding material is heated, the electrical insulation of the conductive wire or the magnetic material is broken, and a problem arises in fixing the member.

Magnetic circuits use cores and yokes. Most of the cores are laminates of electronic steel sheets, and coking, welding, bolt fastening, and the like are used for binding the laminated cores. In the caulking and welding, an electrical short circuit occurs between the stacks, a short circuit current occurs in the alternating magnetic field, and device performance is deteriorated. Thus, a die or an adhesive may be used to bond the electrical steel sheets to the stacks. However, mold or adhesion cannot be used at high temperatures.

In the heater, fixing and insulation of the heat generating portion are performed by a member such as ceramics that withstands high temperature. This fixation is a partial fixation, which requires time and effort for the assembly process, and noise and vibration due to the partial fixation are sometimes problematic. If it is possible to fix it entirely by adhesion or the like and to insulate it, the process becomes simple and automation becomes possible. However, there is no bonding process method that can be used at high temperatures.

An object of the present invention is to provide annealing for improving the corrosion resistance and insulation of the cross section of a conventional iron core, and an insulation coating treatment mainly on a varnish treatment, in which the adhesion, insulation, corrosion resistance, heat resistance, workability and magnetic properties of the insulation coating after firing are improved. Since there have been many problems in terms of properties, it is a new iron core cross-section insulating film treatment technology to replace the conventional heat treatment such as varnishing, bluing, etc., to provide a very quick and easy cross-sectional coating film.

Another object of the present invention is made in view of such a phenomenon, and to provide an electric device and a method of manufacturing the same that can be operated at a high temperature.

Another object of the present invention is to suppress stresses and strains associated with electrical shorts and bindings, and to provide a member for an electric device having an improved surface and a simple binding method thereof.

(1) An iron core having excellent cross-sectional insulation properties, wherein an insulating film containing 30 parts by mass or more of a silicon compound converted to Si0 ₂ is treated at an iron core cross section so that an average film thickness is 0.5 μm or more.

(2) The iron core according to (1), wherein the insulating film has an average film thickness of 0.5 µm or more and a breakdown voltage of 30 V or more.

(3) The iron core according to the above (1) or (2), wherein the insulating coating has heat resistance in air of 400 ° C for 1 hour or more.

(4) The silicone compound according to any one of (1) to (3), wherein the silicone compound is a silicone resin, an alkali silicate, colloidal silica, a low melting glass frit, (R ¹ ) _n Si (X ¹ ) _4-n [ However, n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ) Wherein, R ² is an alkyl group, and when n = 0, 1, 2, a plurality of R ² may be different], and is produced by one or two or more hydrolysis reactions and dehydration condensation reactions of the material represented by. Pure silicon polymer containing a compound to be formed, (R ³ ) _n Si (X ² ) _4-n [wherein an integer of n = 0 to ³ , R ³ is an organic functional group other than an alkyl group or a phenyl group, n = 2, 3 In the case of a plurality of R ³ may be different, X ² is an alkoxy group represented by Cl or O (R ⁴ ), where R ⁴ is an alkyl group, in the case of n = 0, 1, 2 a plurality of R ⁴ Go The number of that] a modified silicone polymer comprising a compound produced by the one or two or more kinds of a hydrolysis reaction and dehydration condensation reaction of a substance to be expressed, and _{^{(R l) n Si (X}} 1) 4-n [ stage , n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ) , Wherein R ² is an alkyl group, and in the case of n = 0, 1, 2, a plurality of R ² may be different], or one or two or more kinds of compounds represented by (R ³ ) _n Si (X ² _4-n [wherein n is an integer of 0 to 3, R ³ is an organic functional group other than an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ³ may be different, and X ² is Cl or O An alkoxy group represented by (R ⁴ ), wherein R ⁴ is an alkyl group, and in the case of n = 0, 1, 2, a plurality of R ⁴ may be different]. Reaction and dehydration condensation An iron core having excellent cross-sectional insulation properties, characterized in that it is a dry film containing one or two or more of the mixed silicone polymers, which is a compound produced by the reaction.

(5) Said pure silicone polymer as described in said (4) whose tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, and mono which are four or less carbon atoms of an alkyl group of R <^1> and R <^2> . Methyltrimethoxysilane, monomethyltriethoxysilane, monomethyltriisopropoxysilane, monomethyltributoxysilane, monoethyltrimethoxysilane, monoethyltriethoxysilane, monoethyltriisopropoxysilane, Monoethyltributoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane and diphenyldiee A compound produced by one or two or more hydrolysis and partial dehydration condensation reactions selected from oxysilane, wherein the modified silicone polymer is an acrylic modified silicone polymer, alkyd modified sil Polymer, polyester acryl-modified silicone polymer, epoxy-modified silicone polymer, amino-modified silicone polymer, vinyl-modified silicone polymer, and fluorine-modified iron core having a superior end face insulation as set of one or not less than two types of silicone polymers.

(6) The oxygen (O), carbon (C), hydrogen (H), nitrogen (N), sulfur (S) and fluorine (F) in any one of the above (1) to (5). In addition to the metal element or semi-metal element M is mainly silicon (Si), Si is mainly in the form having a bond of Si-0, in addition to Si, M is Li, Na, K, Mg, Ca, Cr, Excellent cross-sectional insulation, characterized in that one or more selected from Mn, Fe, Co, Ni, Cu, Zn, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, Sb and Bi Having iron core.

(7) The oxygen (O), carbon (C), hydrogen (H), nitrogen (N), sulfur (S) and fluorine (F) in any one of the above (1) to (6). In addition to the total mass of the element, Si, Li, Na, K, Mg, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Ti, Zr, Nb, B, The total mass ratio of Al, Ge, Sn, P, Sb and Bi is 90 mass% or more, and the mass ratio of Si is 50 mass with respect to the total mass of elements other than O, C, H, N and S in the said insulating film. Iron core having excellent cross-sectional insulation, characterized in that more than%.

(8) The iron core according to any one of (1) to (7), wherein the main body of the iron core is made of a non-oriented electrical steel sheet.

(9) A transformer iron core excellent in insulation and corrosion resistance, having an insulating film made of pure silicon polymer on the cross section and the surface of a laminated steel sheet of magnetic material.

(10) A transformer iron core excellent in insulation and corrosion resistance, having a conductor on an iron core laminated with a magnetic material, and having an insulating film made of pure silicon polymer on the surface or gap between the magnetic material and the conductor.

(11) The transformer core according to the above (9) or (10), wherein the insulating coating has an average film thickness of 0.5 to 100 µm and a breakdown voltage of 30 V or more.

(12) In a magnetic member for an electronic device in which a plurality of magnetic material pieces punched into substantially the same shape are laminated and integrated by a silicone polymer, strain and / or stress are not applied locally to each magnetic material piece. The magnetic member for electronic equipment characterized by being integrated.

(13) The magnetic member according to (12), wherein the armature core includes a plurality of split cores.

(14) A solution having the ability to fix and bind adjacent members to one another after application and drying between adjacent members, and also to have the ability to fix and bind at a high temperature of 200 ° C. or higher, wherein (R ^l ) _n Si ( X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, and X ¹ is Cl or O (R ^Is an alkoxy group represented by ² ), wherein R ² is an alkyl group, and when n = 0, 1, 2, a plurality of R ² may be different]. Using a pure silicone polymer comprising a compound produced by hydrolysis and partial dehydration condensation reaction, and having an integrated conductor or conductor and a magnetic material while ensuring electrical insulation between homogeneous or heterogeneous adjacent members. High temperature operation electrical equipment.

(15) In the case of manufacturing iron cores, after punching or shearing the material into a predetermined shape, laminating, clamping, annealing or omitting annealing, insulating film treatment on the end surface of the iron core, and drying and / or firing treatment A method of processing an iron core composed of an insulating film and treating the end surface thereof with an insulating coating, wherein the insulating coating treatment agent is a silicone resin, an alkali silicate, colloidal silica, a low melting glass frit, (R ^l ) _n Si (X ¹ ) _4-n [Wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, and X ¹ is alkoxy represented by Cl or O (R ² ) Wherein R ² is an alkyl group, and when n = 0, 1, or 2, a plurality of R ² may be different]. Pure silicon, a solution containing the resulting compound Reamer _{^{sol, (R 3) n Si (}} X 2) 4-n [ stage, n = an integer of 0~3, R ³ is an organic functional group other than an alkyl group or a phenyl group, n = 2, a plurality of R 3 In the case of ³ may be different, X ² is an alkoxy group represented by Cl or O (R ⁴ ), where R ⁴ is an alkyl group, and in the case of n = 0, 1, 2, a plurality of R ⁴ may be different]. A modified silicone polymer sol, which is a solution comprising a compound produced by one or two or more hydrolysis reactions and dehydration condensation reaction of a substance to be expressed, and (R ^l ) _n Si (X ¹ ) _4-n [where n Is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, in the case of n = 2, 3, a plurality of R ¹ may be different, and X ¹ is an alkoxy group represented by Cl or O (R ² ), where , R ² is an alkyl group, and in the case of n = 0, 1, 2, a plurality of R ² may be different], or one or two or more kinds of compounds represented by (R ³ ) _n Si (X ² ) _{4 -n} [where, n is an integer from 0 to ^3, R 3 is an alkyl group or a phenyl Are organic functional groups other than the case of n = 2, 3, and a plurality of R ³ may be different, X ² is an alkoxy group represented by Cl or O (R ^4), where R ⁴ is an alkyl group, n = 0 , 1, selected in the solution a mixed silicone polymer sol for 2 comprises generating compounds by one or two or more kinds of a hydrolysis reaction and dehydration condensation reaction of a substance, which is represented by that there is a plurality of R ⁴ may be different; Using one kind or two or more kinds of silicone compounds to be applied by dipping treatment and / or spray treatment and / or brush, drying and / or firing, and then obtaining an average film thickness of 0.5 to 20 m. Insulation coating method of cross section of iron core.

(16) The above-mentioned pure silicon polymer sol according to (15), wherein tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane and tetrabutoxysilane are each 4 or less carbon atoms of the alkyl groups of R ¹ and R ² . , Monomethyltrimethoxysilane, monomethyltriethoxysilane, monomethyltriisopropoxysilane, monomethyltributoxysilane, monoethyltrimethoxysilane, monoethyltriethoxysilane, monoethyltriisopropoxy Silane, monoethyltributoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane and di A solution containing a compound produced by one or two or more hydrolysis and partial dehydration condensation reaction selected from phenyl diethoxysilane, wherein the modified silicone polymer sol is acrylic modified silicone Iron core, characterized in that the solution containing one or two or more of the reamer, alkyd modified silicone polymer, polyester acrylic modified silicone polymer, epoxy modified silicone polymer, amino modified silicone polymer, vinyl modified silicone polymer and fluorine modified silicone polymer Insulation coating method of cross section.

(17) The metal according to (15) or (16), in addition to oxygen (O), carbon (C), hydrogen (H), nitrogen (N), sulfur (S) and fluorine (F) in the insulating film. Elemental or semimetal element M is mainly silicon (Si), and Si is mainly present in the form of having a bond of Si-0, and in addition to silicon, M is Li, Na, K, Mg, Ca, Cr, Mn, Fe Insulation of iron core cross-section characterized by containing one or two or more selected from Co, Ni, Cu, Zn, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, Sb and Bi Coating treatment method.

(18) The oxygen (O), carbon (C), hydrogen (H), nitrogen (N), sulfur (S), or fluorine (F) in any one of the above (15) to (17). In addition to the total mass of the element, Si, Li, Na, K, Mg, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Ti, Zr, Nb, B, The total mass ratio of Al, Ge, Sn, P, Sb and Bi is 90 mass% or more, and the mass ratio of Si is 50 mass with respect to the total mass of elements other than O, C, H, N and S in the said insulating film. It is% or more, The insulation coating processing method of the iron core cross section.

(19) The SiO ₂ of any of the above-mentioned (15) to (18), wherein, as a filler, a pure silicon polymer sol, a modified silicone polymer sol, and / or a mixed silicone polymer sol as a filler. 0.1-50 mass parts of inorganic oxide powder particles, inorganic oxide colloidal substance, organic resin powder particles, and organic resin emulsion solution are added as a solid content per 100 mass parts of powder, and insulation of the iron core cross section is carried out. Coating treatment method.

(20) The inorganic powder particles or colloidal material according to the above (19), wherein the primary particle diameter is 7 to 50Onm of SiO ₂ , A1 ₂ 0 ₃ , Ti0 ₂ , Zr0 ₂ , and / or a composite material thereof. Insulation coating processing method of iron core cross section characterized by using 1 type (s) or 2 or more types chosen from.

(21) The organic resin powder particles or emulsion solution material thereof according to the above (19), wherein acrylic, polystyrene, polyethylene, polypropylene, polyamide, polycarbonate, polyurethane, melamine, having a particle diameter of 50 to 10000 nm 1 or 2 or more types selected from phenol, an epoxy resin, and / or its copolymer are used, The insulation coating processing method of the iron core cross section.

(22) The substrate according to any one of (15) to (21), wherein the iron core cross section is subjected to two or more overlap coating treatments while drying at room temperature to 300 ° C for 30 seconds or more. Insulation coating method of cross section of iron core.

(23) In any one of said (15)-(22), when performing the said double coating process, in the at least 1 time of coating process, the filler as described in any one of said (19)-(20) is added, The blended insulating coating agent is applied, and the layer containing the filler is treated to be 0.2 to 10 µm in the thickness after drying, and at least the insulating coating agent without adding and blending the filler is applied to the final coating treatment, and the average thickness of the entire insulating coating agent is applied. It is 0.5-20 micrometers, The insulation coating processing method of the iron core cross section characterized by the above-mentioned.

(24) The method according to any one of (15) to (23), wherein the iron core includes a non-oriented electrical steel sheet.

(25) A method for producing a transformer core having excellent insulation and corrosion resistance, wherein a pure silicon polymer is applied to a cross section or surface of a transformer core in which magnetic materials are laminated and dried to form an insulating coating.

(26) A method for producing a transformer core with excellent insulation and corrosion resistance, characterized by laminating a magnetic material, applying a conductor, and then applying an insulating film of pure silicon polymer and drying to fix the magnetic material and the conductor.

(27) The method for producing a transformer core according to (25) to (26), wherein the insulating coating after coating and drying has an average film thickness of 0.5 to 100 µm and a breakdown voltage of 30 V or more.

(28) The method for producing a transformer core having excellent insulation and corrosion resistance according to any one of (25) to (27), wherein a thermosetting compound is used as the pure silicon polymer.

(29) The organic silicon compound according to any one of (25) to (28), wherein (R ^l ) _n Si (X ¹ ) _4-n [where n is an integer of 0 to 3 and R ¹ is an alkyl group Or a phenyl group, n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, n = 0, In the case of 1, 2, a plurality of R ² may be different], one or two or more coatings by one or more methods of dipping, spraying or brushing using one or two or more kinds of materials represented by And a method for producing a transformer iron core having excellent insulation and corrosion resistance, wherein R ¹ and R ² represent a hydrocarbon group having 1 to 6 carbon atoms, and X ¹ is an alkyl group having 1 to 6 carbon atoms. .

(30) The transformer core according to (29), wherein the pure silicon polymer contains at least 50% or more of Si (X ¹ ) ₄ and (R ¹ ) Si (X ¹ ) ₃ . Method of preparation.

(31) SiO according to any one of (25) to (30), wherein the primary particle diameter is 7 to 50Onm as an inorganic powder particle or a colloidal substance per 100 parts by mass of SiO ₂ contained in the pure silicon polymer as an additive. ₂ , A1 ₂ O ₃ , TiO ₂ , ZrO ₂ and / or one or more selected from the group consisting of two or more 0.1 to 50 parts by mass of a transformer core having excellent insulation and corrosion resistance Method of preparation.

(32) The method for producing a transformer core according to any one of (25) to (31), wherein the pure silicon polymer has a drying temperature of 200 ° C. or less.

(33) A method of binding a magnetic member for an electronic device composed of a plurality of magnetic material pieces, comprising placing and assembling the plurality of magnetic material pieces, and then applying a solution that exhibits the ability to bind the magnetic material pieces by drying. Or, or immersing in the solution, and then drying and integrating the magnetic member for an electronic device.

(34) After laminating a plurality of magnetic material pieces punched into substantially the same shape, applying a solution that exhibits the ability to bind the magnetic material pieces by drying or dipping into the solution, and then drying and integrating the same. Simple binding method of the magnetic member for electronic devices characterized by the above-mentioned.

(35) The solution according to (33) or (34), wherein the solution having the ability to bind the magnetic material pieces by drying is used as a solution containing at least one of pure silicon polymer and modified silicone polymer as a main component. Simple binding method of the magnetic member for electronic devices characterized by the above-mentioned.

(36) The monomer of any of (33) to (35), wherein the pure silicon polymer component includes ((R ¹ ) _n Si (X ¹ ) _4-n [where n is an integer of 0 to 3, R ¹ Is an alkyl group or a phenyl group, in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, n = 0, 1, 2, a plurality of R ² may be different] an electromagnetic silicon characterized by using an organosilicon compound produced by one or two or more hydrolysis and partial dehydration condensation reaction of the material represented by Simple binding method of the magnetic member for the aircraft.

(37) The modified silicone polymer according to any one of (33) to (35), wherein the acrylic modified silicone polymer, alkyd modified silicone polymer, polyester acrylic modified silicone polymer, epoxy modified silicone polymer, amino modified silicone polymer, vinyl A simple binding method of a magnetic member for an electronic device, characterized by using one kind or two or more kinds of a modified silicone polymer and a fluorine modified silicone polymer.

(38) A solution having the ability to fix and bind adjacent members to one another after application and drying between adjacent members, and to be fixed and bound even at a high temperature of 200 ° C. or higher, wherein (R ^l ) _n Si ( X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, and X ¹ is Cl or O (R ² Is an alkoxy group, wherein R ² is an alkyl group, and when n = 0, 1, 2, a plurality of R ² may be different]. Pure silicon polymer containing a compound produced by decomposition and partial dehydration condensation reaction is used, and the solution is applied to the lead or the lead and the magnetic material, or the conductor or the lead and the magnetic material are immersed in the solution, followed by drying Translocation between homogeneous or heterogeneous contiguous members While ensuring the insulation, lead or method of producing a high temperature operating electrical equipment, comprising a step of integrating the conductors and magnetic materials.

(39) In the above (38), (R ^l ) _n Si (X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, and when n = 0, 1, 2, a plurality of R ² are different Wherein the composition ratio of at least n = 0, 1 organosilicon compound and at least n = 0, 1 organosilicon compound and n = 0 organosilicon compound and n = 1 organosilicon compound A method for producing a high temperature operating electric machine, comprising using a pure silicon polymer in the range of 1:20 to 4: 1.

(40) The method for producing a high-temperature operating electric machine according to any one of (38) and (39), wherein, as the pure silicon polymer (compound), a thermosetting pure silicon polymer is used.

(41) The method according to any one of (38) to (40), wherein, as an additive to the pure silicon polymer, one or two of SiO ₂ , A1 ₂ 0 ₃ , and TiO ₂ having a primary particle diameter of 7-500,000 nm. A method for producing a high temperature operating electric machine, comprising adding at least 10 parts by weight of at least one species.

(42) The method for producing a high temperature operating electric apparatus according to any one of (38) to (41), wherein the film thickness after drying is 0.5 to 100 µm.

(43) The method for producing a high-temperature operating electric machine according to any one of (38) to (42), wherein the drying temperature is 200 ° C or lower.

Fig. 1 shows the relationship between the film thickness and the breakdown voltage in the case where the solution of Example 3 of the present invention and Example 6 of the present invention in Example 1 were dried and then subjected to calcination by varying the adhesion thickness.

2 is a diagram illustrating a split core piece.

It is a state figure which presses and fixes a laminated division core piece.

4 is a partial detail view of a laminated split core in which a binding film is formed.

5 is a perspective view of a laminated split core providing a winding over the tie film.

6 is a state diagram in which a laminated split core wound with winding is immersed in a binding liquid.

7 is a state diagram in which a laminated split core is bound to a case.

8 is a sectional view (a) and a plan view (b) of the IPM rotor.

9 is a cross-sectional view of a reactor in which a binding film is formed.

Best Mode for Carrying Out the Invention

In the present invention, the iron core is an iron core of an energy conversion device such as a motor, a driver, a generator, a transformer, a reactor, that is, a laminated iron core of a steel sheet (including a stainless steel sheet and an iron plate used as a magnetic material) (linear, rod-shaped). , Lump-like iron cores, powder-formed iron cores, etc.).

In the core part of the iron core, which is provided with little or no insulating coating on the end face and the surface thereof, and which has no insulation or lacks on the iron core end face or surface, a member in contact with the iron core, for example, a secondary conductor of an induction machine, a motor Cases, bolts and other fixing members, windings, magnets, etc. for fixing the iron core in the generator or the like may be shorted to the iron core, resulting in an increase in loss caused by a short circuit current and causing torque, thrust, or output reduction.

In addition, when corrosion resistance is low on the cross section or surface of the iron core, rust is likely to occur on the cross section or surface, and the corrosion resistance is important because it causes damage to precision sensors such as media and encoders of the recording apparatus or causes various mechanical problems. Do.

Conventionally, as a measure for improving the insulation and corrosion resistance of iron core cross sections and surfaces in an iron core processing step using an electronic steel sheet, heat treatment such as varnish, paint treatment or bluing has been used after punching the roofing material into the iron core.

However, in the prior art, when varnishing, it is necessary to perform cleaning, annealing, and the like to remove the punching oil adhered during punching, as a pretreatment, and there is a problem in terms of equipment, time, and cost. In addition, since the adhesion, insulation, and corrosion resistance of the formed varnish are unstable, and a sufficient effect is hardly obtained, there is a problem that a thicker coating than necessary is necessary in the case of varnish treatment.

Moreover, also in the bluing process, in addition to the time and cost problem for annealing, there existed a problem also in terms of stability of an oxide film, corrosion resistance, and an insulating effect.

In order to solve this problem, the present inventors have attempted to improve the insulation coating for different compositions, application conditions and drying or firing conditions of the solution. As a result, it was found that an iron core having very excellent insulation can be obtained by using a solution containing a silicon compound as a main component as a cross-sectional treatment agent.

A film containing 30 parts by mass or more in terms of Si0 ₂ is excellent in insulation and, in particular, consists of a pure silicone polymer, a modified silicone polymer, and / or a mixed silicone polymer formed by dipping or spraying a sol mainly composed of an organic silicon compound. With an insulating coating, it has succeeded in developing an iron core cross-section coating and coating method excellent in appearance, adhesion, heat resistance, corrosion resistance, abrasion resistance and high insulation in a short time without requiring pretreatment or high temperature drying.

Here, it refers to siloxane (SiO-Si) case where the Si present in a combined form all in the form of SiO ₂ in terms of SiO ₂ is a silicon compound.

In addition, pure silicon polymer means (R ^l ) _n Si (X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ May be different, and X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group and a plurality of R ² may be different when n = 0, 1, or 2] Means a compound produced by one or two or more hydrolysis reactions and dehydration condensation reaction of the material represented by, wherein the modified silicone polymer is (R ³ ) _n Si (X ² ) _4-n [where n = 0 An integer of ˜3, R ³ is an organic functional group other than an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ³ may be different, and X ² is an alkoxy group represented by Cl or O (R ⁴ ) , Wherein R ⁴ is an alkyl group, and in the case of n = 0, 1, 2, a plurality of R ⁴ may be different], which is generated by one or two or more hydrolysis and dehydration condensation reactions of a substance represented by Compound means, the mixed silicone polymer is (R ¹ ) _n Si (X ¹ ) _4-n [ _where n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, when n = 2, 3, A plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, and in the case of n = 0, 1, 2, the plurality of R ² are different One or two or more kinds of the compound represented by the above formula, and (R ³ ) _n Si (X ² ) _4-n , provided that n is an integer of 0 to 3 and R ³ is an organic functional group other than an alkyl group or a phenyl group. When n = 2, 3, a plurality of R ³ may be different, X ² is an alkoxy group represented by Cl or O (R ⁴ ), where R ⁴ is an alkyl group, n = 0, 1, 2 In the case of a plurality of R ⁴ may be different] means a compound produced by one or two or more hydrolysis reaction and dehydration condensation reaction of the material represented by.

In addition, the solution state of such a silicone polymer is a pure silicon polymer sol, a modified silicone polymer sol, and a mixed silicone polymer sol, respectively.

Hereinafter, the present invention will be described in detail.

The present invention is characterized by a method for treating an insulating film on an iron core cross section. As the solution composition, one or two or more of silicone resin, alkyl silicate, alkali silicate, colloidal silica, low melting glass frit, pure silicone polymer sol, modified silicone polymer sol and mixed silicone polymer sol It is characterized by using. By immersing the iron core material in such a solution or coating the coating by spraying, it is possible to form a dense film that is an exposed surface of iron formed during punching, that is, an iron core end face or a slot portion.

In particular, when the silicone compound uses one kind or two or more kinds of pure silicon polymer sol, modified silicone polymer sol, and mixed silicone polymer sol, drying is completed in a short time at low temperature, and it is excellent in adhesion and insulation on the dense core cross section. A film is formed.

Among the silicone polymers formed from such sols, in particular, excellent heat resistance was obtained in the film of pure silicon polymer, and it was found to be optimal for iron core production including an annealing process.

In addition, as a method of forming a film at a lower temperature and in a short time, a metal or semimetal other than Si having a crosslinking point action, that is, Li, Na, K, Mg, Ca, Cr, Mn, Fe, Co, Ni , Cu, Zn, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, Sb or Bi are introduced in the form of alkoxides or chlorides that dissolve in a solvent and cause a dehydration condensation reaction with the silicon compound It is effective in accelerating the formation of siloxane (Si-0-Si) bond networks.

In order to obtain high insulation resistance, high voltage resistance, corrosion resistance or heat resistance, among the above silicone compounds, in particular, as a filler in the silicone polymer, per 100 parts by mass of SiO ₂ of the total silicone polymer, inorganic oxide powder particles, inorganic oxide colloidal materials, By adding 0.1 to 50 parts by mass of the organic resin powder particles and the organic resin emulsion solution at a solid content of 0.1 to 50 parts by mass, very remarkable insulation and withstand voltage withstand effects can be obtained. It can improve the adhesion to the.

In the treatment of such a coating agent, pretreatment such as cleaning or annealing is not necessarily required as in the case of using a conventional organic varnish or inorganic insulation. After clamping the punched iron core material, there is an advantage that can be directly insulated.

In the case of applying the insulation solution, the solution adhesion on the iron core cross section is controlled by adjusting the kind of solvent, the proportion of the solvent, the concentration and the viscosity. In the case of the immersion method, the extraction speed is adjusted, and in the case of the spraying method, the nozzle shape, the spraying speed, and the like are adjusted in combination with the above solution conditions to apply a predetermined film thickness. At this time, when the desired film thickness cannot be obtained by one treatment, the film can be applied once, then dried at low temperature, and immersed or sprayed again to obtain a thick film.

In the case of the silicone compound of this invention, drying conditions are easy to dry and bake at a low temperature below 300 degreeC for a short time.

In particular, in the case of using pure silicon polymer, modified silicone polymer, or mixed silicone polymer obtained from silane as a raw material, drying at room temperature to about 120 ° C. is sufficient, and in particular, modified silicone polymer or mixed silicone polymer is produced by the action of the modified functional group. Short drying at low temperatures is possible. When short drying is required, very quick iron core cross-sectional processing becomes possible by drying at the temperature up to about 300 degreeC like the case of using another silicone compound.

Next, the reason for limitation of this invention is demonstrated.

First, the reason for limitation of the iron core material which has high insulation is demonstrated.

The iron core in the present invention is characterized by having an average film thickness of 0.5 µm or more and containing Si mass of 30 parts by mass or more in terms of Si0 _{2 in the} coating.

The reason why the average film thickness of the iron core cross section is made 0.5 mu m or more is that it is necessary to obtain the effect of improving the insulation and the corrosion resistance. If the average film thickness is less than 0.5 µm, and a thin film portion is formed locally, sufficient insulation and corrosion resistance cannot be obtained.

The reason why the Si compound in the coating is required to contain 30 parts by mass or more as Si0 ₂ is important for the compactness, insulation, and heat resistance of the coating. Particularly, in order to improve insulation and heat resistance, at least 50 parts by weight, More preferably, it is preferable to contain the quantity of 75 mass parts or more.

Still another feature is a silicone compound comprising one or two or more of alkali silicate, colloidal silica, low melting glass frit, pure silicon polymer, modified silicone polymer and mixed silicone polymer.

When treated with such a silicone compound and dried, the insulating coating is dense and a uniform coating is formed. An alkali silicate is _{M 2 0 · nSi0 2 · mH} 2 0 , such as sodium silicate is one or two or more of the compounds represented by (M:: LiNa, K, n 1~4) are used.

Among these silicone compounds, in particular, in an iron core having an organic silicon compound film called a pure silicon polymer, a modified silicone polymer, or a mixed silicone polymer, it is excellent in compactness and uniformity and excellent performance in corrosion resistance and insulation. In particular, in the case of the iron core having a pure silicon polymer film, there is an advantage of excellent heat resistance at a higher temperature.

The most preferable insulating coating conditions include a dry film of a pure silicon polymer, a modified silicone polymer and / or a mixed silicone polymer among the above silicone compounds, and have an average thickness of at least 0.5 μm, preferably 2.5 to 20 μm, on the iron core cross section. The withstand voltage is 30V or more.

The material of the iron core varies in shape and roughness of the cross section depending on the conditions of shearing or punching. If the thickness is 0.5 μm or more, such a change is absorbed and stable insulation is obtained. Moreover, when a film thickness is too thick, a problem of cost or the adhesiveness of an insulating film will fall.

Another feature of the iron core of the present invention is that the heat resistance is 400 ℃ or more. The heat resistance in this invention means that when adhesively annealed at the temperature, it does not impair adhesiveness and insulation. Among the treating agents used in the present invention, in particular, when pure silicon polymer sol is used, it is excellent in heat resistance, and thus suitable for the case of A1 die casting or Cu die casting of the iron core.

In addition, in the case of this silicone polymer sol, a thermosetting silicone polymer sol is a more preferable treatment agent. This is because, in the case of the thermosetting type, there is an advantage that the solution that has soaked between the steel sheets by an immersion treatment or other coating process can be dried in a short time during heat drying.

The present inventors investigated the insulation of the iron core of the motor and the efficiency of the iron core, and by improving the insulation of the cross section of the iron core, it showed the effect of improving the electrical insulation with the member in contact with the iron core, and the short-circuit current between the plates causing an increase in loss and a decrease in output It was found that it was suppressed and the torque (thrust) and power of the motor were increased.

For example, in a high speed rotational induction motor (180,000 rpm, 2 poles), it rotates and the secondary conductor space | interval 2cm in an iron core, the iron core height (electronic steel sheet lamination height) 50cm, and the core excitation magnetic flux 1T , Withstand voltage of 34V or higher (refer to: 180,000 rpm / 60s = 3kHz, √2π × 3,000 × 0.02m × 0.5m / 2 × 1T × 2 cross sections = 33,3V).

The film obtained from the pure silicon polymer sol, the modified silicone polymer sol, and the mixed silicone polymer sol of the present invention is a dense main body of SiO ₂ due to layer or three-dimensional curing in the desolvent process of solvents such as alcohols contained in the solution. An insulating film excellent in adhesion is formed by drying at a low temperature for a short time.

When the film thickness after drying is made 0.5 탆 or more by the insulating film formed in this way, a high withstand voltage of 30 V or more is obtained, so the lower limit of the average film thickness is limited to 0.5 탆.

However, when the film thickness is larger than 20 µm, depending on the drying or firing conditions, the film adhesiveness after treatment is reduced, cracking occurs, and stability in the cross section of the iron core is insufficient. In particular, when the heat treatment is performed, poor adhesion may occur. In addition, it requires a long time to dry and limits the thickness because it leads to an increase in cost.

As an insulating film, 1 type, or 2 or more types of a pure silicon polymer, a modified silicone polymer, or a mixed silicone polymer is used, It is characterized by the above-mentioned. The pure silicon polymer sol is a known (R ^l ) _n Si (X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, and when n = 0, 1, 2, a plurality of R ² may be different One or two or more of the substances represented by] are hydrolyzed in a solvent-free or organic solvent and prepared by partial dehydration condensation.

At this time, by changing the kind of the raw silane monomer used, it is possible to impart various performances to the coating formed from the sol.

In addition, the present inventors have repeated extensive experiments and studies on the conditions for obtaining a thick film having good insulation and heat resistance using pure silicon polymer, and as a result, so-called 4 represented by n = O, 1 in the composition of the general formula. It has been found that the use of functional or trifunctional silicone polymer sol is overwhelmingly advantageous when it involves a heat treatment process.

In particular, by combining n = 1 components in a range of 20 to 80% in a combination of n = 0 and 1, an insulation coating treatment which is a thick film and is excellent in appearance, insulation, heat resistance and adhesion is possible.

The modified silicone polymer is one in which the raw monomer of the pure silicon polymer sol is modified by an organic resin other than an alkyl group or a phenyl group, and the modification is performed by known cold blend or condensation reaction.

Mixed silicone polymers are prepared by hydrolysis and dehydration condensation of the raw monomers forming the pure silicon polymer and the raw monomers forming the modified silicone polymer sol at a desired ratio, and the pure silicon polymer component and the modified silicone polymer component are networked at the molecular level. Structure.

The raw materials of the sol for obtaining the pure silicon polymer include tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, monomethyltrimethoxysilane and monomethyltriethoxy having 4 or less carbon atoms of an alkyl group. Silane, monomethyltriisopropoxysilane, monomethyltributoxysilane, monoethyltrimethoxysilane, monoethyltriethoxysilane, monoethyltriisopropoxysilane, monoethyltributoxysilane, dimethyldimethoxysilane , Dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane and diphenyldiethoxysilane, and further as silane chloride, One kind or two or more kinds such as tetrachloride and titanium methyl trichloride are used.

Introduction of an alkyl group or a phenyl group can impart flexibility and processability to the coating, and can also exhibit heat resistance as compared to other organic functional groups.

However, as the carbon number of the alkyl group increases, problems such as a decrease in heat resistance, a decrease in film formation, and a high temperature of the drying temperature occur. Therefore, a carbon number of 4 or less is preferable, and especially when considering heat resistance of about 500 to 600 ° C. Carbon number of 1 or less is preferable.

As the modified silicone polymer, for example, one or two or more of acrylic modified silicone polymer, alkyd modified silicone polymer, polyester acrylic modified silicone polymer, epoxy modified silicone polymer, amino modified silicone polymer, vinyl modified silicone polymer and fluorine modified silicone polymer This is used. Such modified silicone polymers form bonds between organic functional groups in addition to Si-0-Si bonds, resulting in a dense insulating film at low temperatures.

The mixed silicone polymer is formed using one kind or two or more kinds of the raw material monomer for obtaining the pure silicon polymer and the raw material monomer of the modified silicone polymer. It is a polymer which can achieve both the heat resistance of pure silicon polymer and the like, such as low temperature curability and water repellency of modified silicone polymer, at the molecular level.

In addition, other metal oxides may be introduced into any of these silicone polymers as catalysts or crosslinking points for promoting condensation reactions. In this case, as the metal alkoxide of the raw material, titanium tetraethoxide, titanium isopropoxide, aluminum Butoxide;

The insulating film made of such a silicone polymer forms a dense and rigid film of SiO ₂ principally by a very fast drying process in which both the solvent and the dehydration occur simultaneously. Therefore, the formed insulating film is dense and corrosion-resistant, and thus resists compressive stress. This is advantageous when various processing is performed in a later step.

In addition, in the case where the organic group contains fluorine such as an alkyl group such as a methyl group, a phenyl group or a CF ₃ group, water repellency is obtained and better corrosion resistance is obtained, thus contributing to the improvement of the corrosion resistance.

In the case of such a silicone polymer, both of them obtain a better film than the prior art, but in particular in the case of pure silicon polymer, in the case of a modified silicone polymer or a mixed silicone polymer, in the case of producing a film having more dense insulation, heat resistance and adhesion, The contained organic resin component tends to be slightly inferior to the former in insulation, film strength, corrosion resistance, heat resistance, and the like.

In addition, as an excellent condition for the insulating coating, in addition to oxygen, carbon, hydrogen, and nitrogen, a metal element or a semimetal element M is mainly silicon (Si), and Si is mainly present in a form having a bond of Si-0. The advantages when M contains one or two or more selected from Li, Na, K, Mg, Ca, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, Sb and Bi are as follows. For the same reason.

In order to provide insulation, the structure of the insulating coating is preferably a dense amorphous metal. Therefore, it is necessary to make Si-0-Si network structure which has an amorphous metal structure up to comparatively high temperature as a basic skeleton of a film matrix.

However, in the method of forming a film from a solution (sol), there exists a problem about the film peeling by the volume shrinkage which arises at the time of desolvent or condensation.

As a solution, there is a method of dispersing a stable oxide in a solvent and introducing it into a film, and there is an advantage of adding a metal or semimetal oxide or a complex oxide in addition to Si suitable for the solvent.

In addition, the Si-0-Si-based condensation reaction generally has a disadvantage of low reactivity, and in addition to Si which adds a metal or semimetal catalyst or forms a crosslinking point of the Si-0-Si network as an improvement of the reactivity. The M-0 bond by the metal or semimetal (M) is introduced using M alkoxide or acetylacetate complex or chloride to form a film containing dense M in a short time. As a result, the film containing M obtains a dense insulating film with few cracks.

Next, with respect to the total mass of elements other than oxygen, carbon, hydrogen, nitrogen, sulfur and fluorine in the insulating film, Si, Li, Na, K, Mg, Ca, Y, Ti, Zr, The total mass ratio of Nb, B, Al, Ge, Sn, P, Sb, Bi is 90 parts by mass or more, and Si to the total mass of elements other than oxygen, carbon, hydrogen, nitrogen, sulfur, and fluorine in the insulating film The reason why the mass ratio of is 50 parts by mass or more is as follows.

High insulation is basically maintained by the insulating oxide in the coating. Therefore, the ratio of the component metal of the insulating oxide, that is, Si, Li, Na, K, Mg, Ca, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, Sb, Bi, is workability and water repellency. 90 parts by mass or more in all components except oxygen, carbon, hydrogen, nitrogen, sulfur, and fluorine contained in the organic functional group introduced for imparting and the like, and limited to metal components, preferably It is good that it is 95 mass parts or more.

Among them, as described above, the matrix structure of the coating contributes greatly to the network of Si-O-Si, and in the insulating coating, the mass ratio of Si which is a basic skeleton component is other than oxygen, carbon, hydrogen, nitrogen, sulfur, and fluorine. It is required to exist 50 mass parts or more of the total mass of the element of, and it is preferable to exist 75 mass parts or more from a viewpoint of an insulation improvement and an improvement of a film strength.

In the application of the present invention, it is advantageous to use the non-oriented electrical steel sheet as an iron core material, in particular for use in cross-section insulation when assembling with an iron core. In other words, in most cases, iron core materials such as motor cores are subjected to annealing, organic varnishing, or both in order to rust and insulate laminated iron cores, but the effect is absolute.

Next, in the iron core manufacturing method using the present invention, in the iron core processing step, the non-oriented electrical steel sheet iron core is punched, laminated, clamped, annealed as necessary, and treated for the purpose of antirust, insulation, etc. The technique of the present invention can easily obtain a simple, low cost and high productivity non-oriented electrical steel sheet core having excellent film performance.

As the silicone compound used as a component of the insulating coating agent, the iron core is used in one kind or two or more kinds of silicone resin, alkali silicate, colloidal silica, low melting glass frit, pure silicone polymer sol, modified silicone polymer sol, and mixed silicone polymer sol. Is processed by.

The average film thickness of the insulating film is characterized in that it is produced in 0.5μm to 20μm. When treated with such a silicone compound and dried, the insulating film has a dense and uniform film.

In particular, when pure silicon polymer sol, modified silicone polymer sol, and mixed silicone polymer sol made of an organic silicon compound are used, pretreatment such as washing and annealing is not required in the treatment of the insulating coating agent. Effective as a drop.

Moreover, as an insulation film characteristic, it is compact and excellent in uniformity, and the outstanding performance in corrosion resistance and insulation is obtained. In addition, in the case of pure silicon polymer, there is an advantage of excellent heat resistance at a higher temperature, and is advantageous in the case of including a heat treatment step such as annealing or aluminum die casting.

In the case of such a film of this invention, when the average film thickness is less than 0.5 micrometer, sufficient insulation and corrosion resistance improvement effect cannot be acquired. On the other hand, when the film thickness is larger than 20 µm, a thick film portion is formed locally, which increases the lamination thickness of the iron core or worsens the adhesion. In particular, in the case of including the annealing step, local peeling or dropping of the insulating film is easily caused, and therefore, it is limited.

In such coating, there are an immersion method, a spray method, and the like, but the immersion method is simple in terms of coating equipment and is advantageous in terms of use efficiency of the solution.

The coating agent of the present invention is characterized in that one or two or more of pure silicon polymer sol, modified silicone polymer sol, and mixed silicone polymer sol are used as the solution composition.

The pure silicon polymer sol is a known (R ^l ) _n Si (X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, and when n = 0, 1, 2, a plurality of R ² may be different One or two or more of the substances represented by] are hydrolyzed in a solventless or organic solvent, prepared by partial dehydration condensation, and kept in a sol state.

The modified silicone polymer sol is a solution of a compound obtained by hydrolysis and partial dehydration condensation of the raw monomer of the pure silicon polymer sol by an organic resin other than an alkyl group or a phenyl group, and the modification method is a known cold blending or condensation reaction or the like. By degeneration.

The mixed silicone polymer sol is prepared by hydrolysis and dehydration condensation of a raw material monomer forming a pure silicone polymer sol and a raw material monomer forming a modified silicone polymer sol at a desired ratio, and a pure silicon polymer sol component and a modified silicone polymer sol component It is a networked structure at this molecular level.

Moreover, such a coating agent can be made into the sol which gave 0-M-0-Si bond by hydrolyzing and partial dehydration condensation of metal other than Si or semimetal (M) as an alkoxide or chloride.

The raw materials of the pure silicon polymer sol include tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, monomethyltrimethoxysilane, monomethyltriethoxysilane, having 4 or less carbon atoms of an alkyl group, Monomethyltriisopropoxysilane, monomethyltributoxysilane, monoethyltrimethoxysilane, monoethyltriethoxysilane, monoethyltriisopropoxysilane, monoethyltributoxysilane, dimethyldimethoxysilane, dimethyl Diethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane and diphenyldiethoxysilane, and further as silane chloride, silane tetrachloride Or one or two or more kinds such as titanium methyl trichloride and the like are used.

The modified silicone polymer sol is, for example, one or two kinds of acrylic modified silicone polymer, alkyd modified silicone polymer, polyester acrylic modified silicone polymer, epoxy modified silicone polymer, amino modified silicone polymer, vinyl modified silicone polymer and fluorine modified silicone polymer. The above is used. These are suitably diluted and used with solvents, such as water and / or alcohols.

In particular, the modified silicone polymer having a polar functional group is effective in terms of work because it does not require alcohol as a solvent. In addition, in the modified silicone polymer, in addition to Si-0-Si bonding, organic functional groups are bonded to each other, which is effective for forming a dense insulating film at low temperature.

The mixed silicone polymer is formed using one kind or two or more kinds of the raw material monomer for obtaining the pure silicon polymer and the raw material monomer of the modified silicone polymer. Further, metal alkoxides used as crosslinking points of the matrix include titanium tetraethoxide, titanium isopropoxide, aluminum butoxide and the like.

Since the solution treated with the core cross section, the surface, and the like by these silicone polymers is performed simultaneously with desolvent and dehydration, drying is very fast and a dense and firm film of SiO ₂ is formed in the process. In addition, the formed insulating film is dense, has corrosion resistance, is resistant to compressive stress, and is advantageous when various processing is performed in a later step.

When such a silicone polymer sol is used and the thickness of the film after drying and / or firing is 0.5 to 20 µm, any of the core core cross-sections having excellent adhesion and excellent insulation, voltage resistance, corrosion resistance, and heat resistance can be achieved. In particular, an insulator coating having excellent heat resistance is obtained in pure silicon polymer.

Especially when 1 type, or 2 or more types, such as tetraethoxysilane, tetramethoxysilane, methyl triethoxysilane, and methyl trimethoxysilane, are used, excellent heat resistance is obtained. On the other hand, in the case of the modified silicone polymer or mixed silicone polymer, since the heat resistance tends to be poor, the modified silicone polymer or the mixed silicone polymer is suitable for applications that do not perform annealing.

SiO ₂ minutes 1OO of pure silicone polymer sol, modified silicone polymer sol and mixed silicone polymer sol as a filler in a coating liquid using one kind or two or more kinds of pure silicone polymer sol, modified silicone polymer sol and mixed silicone polymer sol. By adding 0.1 to 50 parts by mass of inorganic oxide powder particles, organic resin powder particles, and / or one or two or more of such emulsion solutions and colloidal solutions as solids, very remarkable insulation and withstand voltage improvement effects are achieved. In addition, as a composite effect, the adhesion to the iron core cross section and the steel sheet surface is improved.

In addition, during drying, by reducing the volume shrinkage, it is possible to suppress the occurrence of cracks and to facilitate thickening.

As the filler added at this time, in the case of the inorganic substance, it is selected from Si0 ₂ , Al ₂ 0 ₃ , Ti0 ₂ , ZrO ₂ , and such composite materials having primary particle diameters of 7 to 500 Onm as powder particles or colloidal substances. 0.1-50 mass parts of 1 type, or 2 or more types are added and mix | blended.

In the case of organic materials, as resin powder particles and emulsion materials, acrylic, polystyrene, polyethylene, polypropylene, polyamide, polycarbonate, polyurethane, melamine, phenol, epoxy resin having a particle diameter of 50 to 10,000 nm, and such copolymers When 0.1-50 mass parts of 1 type, or 2 or more types chosen are added and mix | blended, it is effective for insulation improvement.

When the addition amount is less than 0.1 part by mass per 100 parts by mass of SiO ₂ minutes of the entire silicone polymer, the effect of improving insulation and adhesion is weak. On the other hand, when it exceeds 50 mass parts, the withstand voltage of a film improves more, but is limited because the density of a film falls or the lifetime of a solution falls.

As the filler, in the case of the inorganic oxide type, Si0 ₂ , Al ₂ O ₃ , Ti0 ₂ , ZrO ₂ , and the powder or colloidal material of such a composite material are low cost, and excellent dispersion and addition results in an insulation improving effect. It is advantageous.

In the case of the organic type, acrylic, polystyrene, polyethylene, polypropylene, polyamide, and one or two or more powders or emulsions selected from polycarbonate, polyurethane, melamine, phenol, and epoxy resin are used in appropriate combination.

However, when added, the stability, strength, insulation effect, heat resistance, and the like are advantageous because, in the case of inorganic additives, low cost and excellent dispersion and stable insulation and adhesion improvement effect are obtained. Especially when the heat treatment process such as strain annealing is performed, the effect is remarkable.

The particle diameter of the filler is important. In the case of the inorganic filler, when the particle diameter is less than 7 nm, when dispersed in the solution, the cohesiveness becomes strong and the film thickness is uneven, or the pH of the solution is affected and the stability of the solution is limited.

On the other hand, when it exceeds 5000 nm, the surface roughness by the coarse particles is too large and the particle material may fall off from the cross section of the iron core due to friction or the like. If it is this range, it will be excellent in adhesiveness by the balance with a film thickness and the addition amount, and the insulating film of a high breakdown voltage can be formed. The organic filler is also limited for the same reason.

In addition, when the additive is added to the silicone polymer, a more uniform dispersion is preferable, and when the powder substance is dispersed in a solvent such as alcohol beforehand, an excellent dispersion effect is obtained, and it is advantageous to obtain a film of uniform thickness. Do. In particular, uniform dispersion is obtained when dispersion by ultrasonic vibration is used or in combination with a dispersion method such as another mixer.

When the iron core is dried after the solution is applied, normal temperature drying is also good.However, when attempting to make the drying process or the process efficient for a short time, if it is dried for 30 seconds or more in a drying furnace below 300 ° C, desolvation and dehydration condensation proceed sufficiently. Excellent film performance is obtained. As a preferred drying method, excellent film properties are obtained when heated slowly.

This is because, when rapidly heated, solvents such as water and alcohol are dried quickly, and surface defects are likely to occur.

In the case of repeating the application using the solution of the present invention to obtain a thick film, it is first necessary to apply a solution containing a filler, to dry it at low temperature from 120 to 120 ° C, and then to dry the solution containing no filler. It is advantageous for thickening and obtaining excellent insulation performance.

When applying repeatedly, it is preferable to dry the coating agent containing the filler, to apply the average film thickness of 0.2 to 10μm, then to treat the solution without addition of the filler, and to apply it to 0.5 to 20μm after drying. .

The low content of fillers allows the combination of high amounts of filler-free formulations to smooth out unevenness due to fillers to easily obtain an insulating coating that provides high insulation, uniformity, adhesion and corrosion resistance. Because.

Next, the reason for limiting the transformer core having high insulation will be described.

The laminate of the magnetic material in the present invention is characterized by being treated with an insulating film containing an organosilicon compound on its cross section and surface, and excellent in its insulation and corrosion resistance. The coating component of the organosilicon compound used in the present invention has a Si-O bond and forms an extremely dense coating containing SiO ₂ powder as a main component. Therefore, an insulating film excellent in insulation and corrosion resistance can be formed.

The thickness of the insulating film of this invention shall be 0.5-100 micrometers. The film thickness of 0.5 μm or more results in a withstand voltage of 40 V, which is sufficient in a small transformer. When the film thickness is less than 0.5 µm, a portion with a thin film thickness locally occurs depending on the shape of the cross section of the iron core, so that a stable withstand voltage cannot be obtained. On the other hand, when the film thickness is 50 μm or more, the withstand voltage close to infinity is obtained, and there is no problem even when a high withstand voltage is required as in the case of a large transformer. Although the upper limit may be thick, the limit of the maximum thickness was 100 micrometer in consideration of dryness, overlapping coating property, and adhesiveness of an insulating film at the time of actual work. In consideration of ease of coating treatment, coating performance, cost and the like, the most preferred range is 3 to 30 µm.

In addition, the transformer iron core of this invention shows the transformer iron core which insulated only the laminated iron core, and the transformer core core which carried out insulation coating treatment simultaneously after attaching a conductor to the laminated iron core. In the latter case, since the laminated iron core and the conductor material are simultaneously subjected to an insulation coating treatment, in addition to the insulation treatment, the adhesion treatment between the iron core and the conductor is simultaneously achieved. The insulating coating material penetrates into the cross section of the iron core, the surface, between the steel sheets (foils), and between the conductors and the interface between the iron core and the conductor.In addition to the excellent insulation and corrosion resistance as a dry film, the laminated iron core material, the conductor itself, and the iron core and the conductor are firmly Are glued. As the organosilicon compound film of the present invention, an excellent insulating and adhesive film provided with hardness, strength, heat resistance and the like can be obtained depending on the composition of the component.

Next, as the solution composition of the organosilicon compound to be applied to the present invention, as the organosilicon compound, (R ^l ) _n Si (X ¹ ) _4-n [where n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group , n = 2, 3 when a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, n = 0, 1, 2, a plurality of R ² may be different], such as an organic silicon compound produced by one or two or more hydrolysis reactions and dehydration condensation reaction of the material represented by, and immersion, spraying and applying a brush By 1 or 2 or more, the application drying process of once or twice or more which performs drying between is performed. As an organosilicon compound, a well-known alkoxysilane is hydrolyzed in a solventless or organic solvent, and is polymerized and manufactured. At this time, by changing the kind or combination of silanes used, a film having various performances can be obtained.

When producing partial hydrolyzate of alkoxysilane as an organosilicon compound, tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, monomethyltrimethoxysilane, monomethyltriethoxysilane Monomethyltriisopropoxy silane, monomethyltributoxy silane, monoethyltrimethoxysilane, monoethyltriethoxysilane, monoethyltriisopropoxysilane, monoethyltributoxysilane, dimethyldimethoxysilane, 1 type, or 2 or more types, such as dimethyl diethoxysilane, diethyldimethoxysilane, diethyl diethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane, and diphenyl diethoxysilane, are used. do. At this time, more preferable conditions are (R ¹ ) _n Si (X ¹ ) _4-n [ _where n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, n = 2, as a pure silicon polymer component in the treatment agent; In the case of 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, and when n = 0, 1, 2 Of R ² may be different], if the raw material is adjusted to contain at least 50% of the organosilicon compound produced by one or two or more hydrolysis and partial dehydration condensation reactions, the insulation, corrosion resistance and adhesion Together, a film excellent in heat resistance is obtained. When there is less content than this, it is a tendency for heat resistance to fall and a film peeling may occur according to heating conditions. Most preferably, at least 50% of R ¹ and at least 5% of X ¹ are contained. In this case, the film which is more excellent in adhesiveness and heat resistance is obtained as a thick film.

As the organosilicon compound, according to the production method, as a reaction during the curing process, a silane compound is used as a raw material to obtain a partial hydrolyzate, and then treated, and a thermosetting treatment agent which volatilizes and hardens alcohols or moisture of the solvent component by heating. And a curing agent added to the organosilicon compound which has not been partially hydrolyzed in the process of preparing the organosilicon compound, and then cured by performing hydrolysis and condensation reactions by moisture in the air and the like. In the case of the present invention, not only the cross section of the steel sheet, but also the insulation between the steel sheets (foil), the pores of the conductor, the insulating film treatment between the steel sheets (foil) and the conductors, and bonding and adhesion are important. As a more preferable condition, it is preferable to use a thermosetting solution. It is advantageous to obtain fast drying properties and stable insulating film properties.

Thus, the SiO ₂ polymer film excellent in the coating performance can be formed by apply | coating 1 type (s) or 2 or more types of the organosilicon compound containing the partial condensate obtained using the said silane as a raw material, and drying at low temperature.

In addition, when trying to obtain a high insulation resistance or withstand voltage in the binding layer, as a filler in the organic silicon compound, SiO ₂ minutes, the inorganic oxide with respect to 1OO parts by weight of the powder particles or colo solids this month solution containing the organic silicon compound 0.1 to 50 parts by mass is added. As a composite effect of adding this filler, the adhesion to the iron core cross section or the steel sheet (foil) surface and the cracking or insulation of the coating are improved. As the added inorganic powder particles or colloidal material, 0.1 or 1 or 2 or more selected from SiO ₂ , Al ₂ O ₃ , TiO ₂ , Zr0 ₂ and / or such composite materials having a primary particle diameter of 7 to 500Om is 0.1. To 50 parts by mass to add and blend. When the added amount is less than 0.1 part by mass, the effect of improving adhesion, cracking property and insulation is not obtained. Moreover, when it exceeds 20 mass parts, binding property and adhesiveness are bad, and a film | membrane stain is easy to produce. The most preferable addition amount range is 0.4-2 mass parts.

As the method for applying the organosilicon compound, surface coating and coating application methods which are generally performed can be used, and not only spray coating and dipping methods, but also coating with broth can be applied. A general method can also be used in order to suppress that a coating amount etc. are not uniform. Moreover, in order to raise the adhesive force of contact parts, such as a conductor and a magnetic material, once a space | gap is made to a contact part, a binding liquid is inject | poured into a contact part, and when it becomes a predetermined contact state, the binding force after drying can also be ensured.

It is easy to adjust the film thickness after drying using the method of changing the kind of solvent of a solution, the density | concentration of a solvent, or a viscosity, and can thicken the film thickness as many times as the application and drying process is performed several times. In the immersion method, in the case of the extraction speed and the spraying method, the nozzle shape, the spraying speed, and the like are adjusted in combination with the above solution conditions to apply a predetermined film thickness. In addition, compressed air or the like is blown to suppress the pooling of the solution and to adjust the film thickness.

The electrical insulating film formed in the present invention also has a binding function and also acts as an antirust film. In other words, it may be applied only to the cross section of the iron core, and after that, after winding, it may be applied for fixing the winding on the winding. Since the dry film according to the present invention has a main component SiO ₂ and forms a dense film having a Si—O bond, it exhibits very excellent insulation and anti-rusting functions.

When using the organosilicon compound of this invention, the drying temperature is good at 20 degrees C or less. This is because the solvent constituting the organosilicon compound mainly uses a low temperature volatile solvent such as methyl alcohol, ethyl alcohol, butyl alcohol, propyl alcohol or water. Preferable drying temperature is 80-120 degreeC. This drying temperature is possible by using solvents with low boiling points. In such a temperature range, drying can be performed in a short time of several injections.

In large, medium and small power transformers, the flow of short-circuit currents is a serious problem and should not be. The present invention has had problems in workability, cost and working environment caused by treatment of varnish or the like which has been conventionally performed after cross-sectional processing such as deburring of iron core material. The use of the organosilicon compound of the present invention ensures the characteristics (functions) of varnish abnormalities and at the same time improves these problems.

As the electric apparatus of the present invention, there are an electronic device and a heater, and as the electronic device, there are a motor, a driver, a generator, a transformer, a reactor, and the like. As a heater, an electric device that emits light or electromagnetic waves such as induction heating, dielectric heating, infrared rays, etc. It utilizes heating by heating and direct electricity supply, and a use and a model are irrespective.

Motors, actuators, and generators are a combination of an inductor type, a synchronous type, a direct current type, a reactance type, and two or more types, and include a large to micro motor. In addition, transformers include those using various cores, including winding transformers and multilayer transformers, and reactors are used to improve power factor by adjusting phases of inverters, converters, choppers, and voltage currents. It is used as a filter, an ignition device, etc. except a high frequency device, a winding type, a lamination type, a type with or without a void, a saturable type, a type used without saturation, a type using a cut core, and the like. In addition, both types with and without cores or yokes are possible, and types with and without permanent magnets are also possible.

Cores and yokes include laminated cores such as electronic steel sheets, permalloy, iron-cobalt alloys, amorphous magnetic material cores, soft ferrite cores, casting cores, powder metallurgy cores, powdered plastic molding cores, and the like. And iron or iron alloys such as electronic steel sheets and thick plates, nickel alloys such as nickel and permalloy, cobalt and cobalt alloys, and soft ferrites, amorphous materials, and nanocrystal materials. Applications include armature cores, field yokes, transformer cores, reactor cores, electromagnet cores, print bases, and the like. In particular, cores and yokes obtained by punching and laminating electrical steel sheets are often used. The core may be a core that is integrally punched and laminated, such as a rotor, a core that is used in combination with a split core, a winding core that has been used for an axial gap type rotor, or a claw pole. Some plastics have been modified such as cores, and the like, such as transformers and reactors, include wound cores, laminated cores, sintered cores, powder molded cores, plastic molded cores, and the like, or cut cores and EI cores. Applicable to all of these.

Permanent magnets, regardless of their type or shape, are used in the fields of motors, drivers and generators, as well as for bias magnetic flux (magnetic fields) used in flyback transformers and reactors.

As described above, a plurality of magnetic members such as an armature core, a permanent magnet, and a field yoke are used for the electronic device. However, even when the armature core and the field yoke are composed of a plurality of magnetic material pieces, such as lamination of an electronic steel sheet. There are many.

In some electronic devices, magnetic shielding or electromagnetic shielding may be performed so that magnetic flux does not leak to the outside, or external magnetic flux enters the device and does not adversely affect the outside or the inside of the device. The magnetic member of the present invention also includes magnetic members for magnetic shielding and electromagnetic shielding. In this case, the electronic device which this invention relates to is an apparatus, apparatus, and installation which generate | occur | produce a magnetic flux or an electromagnetic wave, and conversely includes the apparatus, equipment, and installation which a magnetic flux and an electromagnetic wave affect. In addition, the present invention can be applied to general magnetic shields and electromagnetic shields.

Lead wires are used for electrical equipment. The lead of the electronic device carries an armature current or a current that generates a field flux. It may be provided on the stator side or on the rotor or the mover. Secondary conductors, such as inductors, which carry inductive currents, and short rings used for voice coil motors, are also included in the conductors. The conductor wire of the heater is a heating element or the like. In addition, the lead wire and wiring used for an electrical apparatus are also included in the conducting wire in this invention.

The high temperature drive electric machine of the present invention is used at a high temperature, is used in a high temperature environment, and includes the temperature being increased by heat generated from the conducting wire or the magnetic material. Therefore, the electrical insulation or holding of the conductor or magnetic material must be able to withstand high temperatures. As for the heat-resistant temperature of the insulating film or adhesive agent applied to the conventional conducting wire, 180 degreeC of H type of JIS (Japan Industrial Standard) was the maximum normally. In this invention, high temperature means the temperature range of 200 degreeC or more and 900 degrees C or less. If the temperature rises above 900 ° C, the conductor itself causes mechanical problems. According to the present invention, it becomes possible to provide an electric device which can be operated even at such a temperature.

In the present invention, a solution (hereinafter, referred to as binding liquid) that exhibits the ability to fix and bind the conductive wire or the magnetic material by drying and the ability to maintain the electrical insulation or the fixed binding of the conductive wire or the magnetic material at a high temperature is applied, or Or by immersing in the binding liquid to attach the binding liquid to the outside of the conductor or the magnetic material, between the conductor and the conductor, between the magnetic material and the magnetic material, or between the conductor and the magnetic material, and the conductor, the magnetic material and other The binding liquid is injected into the contact portion between the members. Thereafter, the binding liquid is dried at room temperature or higher to bind the conductor and the magnetic material or between these and other members. In the case of the present invention, in the case of the present invention, drying at room temperature to about 120 ° C. is sufficient, but in order to sufficiently obtain the effect of the coating, drying is performed at 80 to 200 ° C. for 30 seconds or more, thereby enabling very rapid dry curing treatment.

In the present invention, the film formed by drying the binding liquid covers the outer surface of the conductor, the magnetic material or another member, and these films are bound to each other, or the binding liquid penetrates between the adjacent and interlayers of the conductor, the magnetic material and the like. In the dried layer, adhesive bonding is performed (hereinafter, the film or layer possible after drying of the binding liquid is called a binding film). Therefore, since the binding force is determined by the type and thickness of the binding film, the type and the film thickness of the binding liquid may be determined as necessary. In addition, since the binding force changes depending on the shape of the conductor and the magnetic material and the state of the surface or the cross section, it is also necessary to consider the shape of the conductor and the magnetic material and the state of the surface or the cross section.

As a binding liquid, the solution which uses 1 type, or 2 or more types of pure silicon polymer as a main component is used as a solution composition. Pure silicon polymer means (R ^l ) _n Si (X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ are different X ¹ may be an alkoxy group represented by Cl or O (R ² ), wherein R ² is an alkyl group, and when n = 0, 1 and 2, a plurality of R ² may be different. A compound produced by one or two or more hydrolysis reactions and partial dehydration condensation reaction of a substance which becomes. These are prepared by hydrolyzing a known alkoxysilane in a solventless or organic solvent and polymerizing. At this time, the kind of silane used is changed, and the coating film which has a various performance is obtained.

Generally, pure silicon polymers include types called thermosetting and moisture curing. In the present invention, it is preferable to use the former thermosetting type. As mentioned above, a thermosetting type | mold includes the solvent which consists of water and the alcohol with low boiling point, such as an organosilicon compound, methanol, ethanol, isopropanol, butanol. Therefore, in the curing step, it is possible to dry at a low temperature of about 120 ° C. or less, to volatilize the solvent component in a very short time, and to dry for several minutes to several ten minutes to form a dense film of Si-0 bond. In the latter water-curable type, hydrolysis reaction is carried out by water absorption in air, and curing and film formation are performed by the added catalytic effect. Therefore, several days may be needed in order to advance hardening of a film. In this case, film formation and curing are not achieved unless water is supplied from the atmosphere. As in the use of the present invention, when applied to a laminated plate, particularly a material having a large surface area, curing of the end portion proceeds, a phenomenon in which water supply to the inside becomes difficult, and hardening of the inner coating is achieved even after several weeks. It may not be possible in some cases, and there exists a problem that stability of hardening time is not obtained.

In the thermosetting type of the present invention, if the solvent is heated above the boiling point of the solvent, decomposition and release of the solvent are performed, which has a great influence on industrialization.

In addition, when trying to obtain a high insulation resistance and dielectric strength to bond the film, to the silicone polymer, as a filler, SiO ₂ minutes, the inorganic oxide per unit 1OO parts by weight of pure silicone polymer powder particles or a colloidal solution, an organic resin powder particles, Or 0.1 to 50 parts by weight of one or two or more of such emulsion solutions are added as solids. As a compound effect of adding this filler, the adhesive force to the iron core cross section or the steel plate surface is improved. As the added inorganic powder particles or colloidal material, 0.1 or 1 or more selected from SiO ₂ , A1 ₂ O ₃ , Ti0 ₂ , Zr0 ₂ and / or such composite materials having a primary particle diameter of 7 to 50Om is 0.1. To 50 parts by weight is added and blended. However, since it affects the stability of a solution depending on a use condition, it is more preferable to use the thing whose primary particle diameter is 0.5 micrometer or less.

In the present invention, when trying to obtain a binding film having excellent heat resistance, the organosilicon compound is (R ^l ) _n Si (X ^l ) _4-n [wherein n is an integer of 3 to 3, R ¹ is an alkyl group or a phenyl group, n When = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, n = 0, 1, 2 days In the case of plural R ² may be different] in the general formula of at least n = 0, 1, 80% or more, and in the case of n = 0: composition ratio of 1: 20 to n = 1 When it is in the range of 4: 1, better binding film performance is obtained. In particular, the higher the component ratio of n = O, the greater the hardness of the coating and the firmer the coating. In addition, the obtained binding film is resistant to cracking. This is advantageous when used at high temperatures. Moreover, in general, drying is fast and drying workability is improved. However, if the n = O component becomes too hard, there is a problem that a thick film may no longer be obtained due to a cracking problem in the drying process of the film. That is, when n = 0 / n = 1, when the ratio is less than 0.05 (1:20), since heat resistance will weaken, it will be restrict | limited. On the other hand, when the ratio exceeds 4 (4: 1), the heat resistance is improved, but it is limited because of the problem of cracking the film and the thickening of the film.

In order to increase the electrical insulation, 0.1-10 parts by weight of one or two or more selected from SiO ₂ , A1 ₂ 0 ₃ , Ti0 ₂ and mixtures thereof having a primary particle size of 7-500,000 nm as a additive is added and compounded. It is good.

As the method for applying the binding liquid or the method for immersing in the binding liquid, a surface coating or coating application method that is generally used can be used. In addition to spray coating and dipping, a method such as coating with a brush can be applied. Even if the application amount is not uniform, it can be suppressed by the method generally used. Moreover, in order to raise the adhesive force of contact parts, such as a conductor and a magnetic material, once a space | gap is given to a contact part, a binding liquid is inject | poured into a contact part, and a predetermined contact state can also raise the binding force after drying.

Control of the thickness of the binding film after drying is easy using the method of changing the kind of solvent of a binding liquid, the density | concentration, or a viscosity of a solvent. If the application and drying steps are repeated several times, the film thickness can be increased by the number of times. In the case of the dipping method, in the case of extracting speed and in the spraying method, the nozzle shape, the spraying speed, and the like are controlled in combination with the above solution conditions, and applied at a predetermined film thickness. In addition, the solution buildup is suppressed by blowing compressed air or the like, and the film thickness can be adjusted.

In the case where electrical insulation is required, the binding film formed in the present invention can act as an electrical insulating film and can act as an antirust film. According to the present invention, since the dry film is SiO ₂ having a Si-0 structure and forms a dense film, it exhibits very excellent insulation and anti-rusting functions.

Example 1

After annealing a non-oriented electrical steel sheet cold rolled coil having 0.35% of Si, 0.002% of Al, and 0.25% of Mn and having a sheet thickness of 0.50 mm on a continuous annealing line, as an insulating coating material, 450 parts by mass of dichromic acid Mg, and 120 parts of boric acid in solids The solution which consists of 5 mass parts of parts and acrylic-styrene resin emulsion was baked at the plate temperature of 350 degreeC by the mass after baking in the same line.

Next, the iron core (44 slots, half-closed, skew (1.23 times the stator slot pitch) of the rotor of the three-phase four-pole cage-type induction motor of 2.2 kW, 200 V, and 60 Hz is punched from this coil and caulked. Produced.

This iron core was immersed by changing the thickness of the film after drying to the coating agent which adheres to the cross section using the solution of the composition shown in Table 1, dried at room temperature, and baked at 10 degreeC for 10 minutes. Next, a secondary conductor bar was made by aluminum die casting on the iron core, and a shaft was inserted to manufacture a rotor of the induction motor. The loss from the no-load characteristic of this motor was obtained to confirm the effect of the present invention.

In addition, at this time, in the manufacturing line of the non-oriented electrical steel sheet, the annealed material (before the insulation coating process) is taken out, the sample of 10 x 30 cm is cut out, the solution using the bar coater is dried, and the film thickness is changed and applied. Then, it calcined similarly and set it as evaluation materials, such as a breakdown voltage, film adhesiveness, and corrosion resistance.

Table 2 and Table 3 show the evaluation results of the coating state and magnetic properties of the iron core in this test, and the insulating coating before and after annealing by the material coated on the steel sheet.

As a result of this test, when the insulating coating agent of this invention was processed to the iron core cross section, the gloss transparent film | membrane was formed and it showed very excellent corrosion resistance and heat resistance. On the other hand, when the conventional varnish or insulating coating agent of the comparative material was treated, the influence of oil adhered at the time of punching was large, the insulating coating was unevenly attached, and the corrosion resistance was very weak compared to the iron core to which the present invention was applied.

In Comparative Examples 1 and 2, even when oil washing using acetone was used as pretreatment, the adhesion state of the single-side coating was uneven, and the coating properties were significantly worse than those of the present invention.

In addition, as a result of comparing the loss reduction rate of the iron core, the loss of the motor processed in Examples 1 to 12 of the present invention was reduced by 7 to 17%. In addition, in the case of Comparative Examples 13 and 14, the improvement was about 4.5%. On the other hand, in the case of the comparative example 1, loss reduction was hardly seen. In addition, in the case of the comparative example 2, it reduced 5%. Thus, also in motor performance, when the insulation process of this invention is performed, a loss is clearly reduced compared with the conventional non-insulation process or the conventional process, and high efficiency of a motor was implement | achieved.

In addition, the film | membrane characteristic at the time of carrying out the application | coating test by the bar coater which used the sheared board | plate material showed the outstanding characteristic also in all of corrosion resistance, insulation, adhesiveness, when using this invention agent, as Table 3 shows. In particular, when the pure silicon polymer by the hydrolysis of the alkoxysilanes of Examples 1 to 8, 10 and 11 of the present invention was applied, it was confirmed that the withstand voltage after annealing was also excellent.

Also in the Example of the mixed silicone polymer of Example 12 of this invention, the withstand voltage and the film | membrane characteristic which were considerably excellent were obtained. In addition, the alkali silicates, colloidal silicas and silicone resins of Examples 13 and 14 of the present invention are slightly inferior in voltage resistance, corrosion resistance and adhesion, compared to the pure silicon polymers, but all are more stable than the comparative examples. Film performance was obtained.

On the other hand, in Comparative Examples 1 and 2, the corrosion resistance and adhesion are very poor in comparison with the present invention, and in particular, in the conventional varnish coating, the film after annealing suddenly completely disappears, turns black, and the corrosion resistance and insulation are very inferior to the present invention. The results are shown.                 

Example 2

The present invention of the pure silicon polymer composition shown in Table 4 was used in the same manner as in Example 1, and the insulating film was calcined so as to have a film thickness of 5 μm after drying on the surface of the non-oriented electrical steel sheet having a plate thickness of 0.5 mm. . Then, the steel sheet coated with such an insulating coating was laminated, and annealing was performed in air at 40 ° C. × 1 Hr to investigate the heat resistance of the coating. The results are shown in Table 4.

As a result of this test, in the case of treating the solution based on the pure silicon polymer of the present invention, even after annealing at 400 ° C. for 1 hour, a transparent and glossy coating state is maintained, and the adhesion or insulation deterioration is also observed. Did. On the other hand, in the case of the organic varnish of a comparative material, the adhesiveness and insulation fall markedly in surface appearance by annealing.

Example 3

The microturbine generator was manufactured using the stator (armature) iron core which processed the cross section using this invention. The stator iron core is obtained by punching and caulking an electrical steel sheet and has a bolt hole for fixing the iron core.

Thereafter, the stator iron core was treated by Example 1 of the present invention, and the stator iron core was inserted into the case, and then fixed by bolts. Conventionally, since the iron core is in contact with the case and the bolt, and there is also an interlayer contact in the caulking, a short circuit current flows through the iron core, so that the loss increases and the temperature rise of the stator is large. By applying the present invention, it is possible to avoid this by reducing the short circuit current, and it is possible to lower the temperature rise by an average of 3 degrees.

Example 4

Using the present invention, an iron core subjected to cross-sectional treatment was combined to produce an XY linear motor. In the XY linear motor, since the flow of magnetic flux becomes three-dimensional, the iron core punched out of the normal electrical steel sheet was orthogonal and combined.

In the conventional iron cores, the cross sections of the iron cores are in contact with each other, but the insulating paper is sandwiched between the iron cores, and in the case of the cross-sectional contact, there is a large increase in loss due to the cross-sectional contact and uneven performance. On the other hand, sandwiching the insulation paper caused a relatively wider air gap, a larger magnetic current, and an increase in no-load resistance loss.

By treating the cross section of the U-shaped iron core using the insulation treatment method of the present invention and combining the two iron cores, the loss was reduced and the variation in performance was also reduced.

Example 5

In order to protect the motor core for pumps from corrosion, in the case of using an electronic steel sheet as the iron core material, a stainless cover is wound around the air gap between the rotor and the stator to protect the iron core, or by using ferritic stainless steel as the iron core material. do.

However, in the former case, the structure is complicated, the eddy current loss occurs in the stainless cover, and the output decrease is inevitable due to the increase in the size of the pores. In the latter case, the output decrease occurs because the saturation magnetization of the ferritic stainless steel is low. . Therefore, this invention process was performed to the iron core which used the electronic steel plate as a raw material, and the motor was produced.

The iron core insulated according to the present invention is cross-sectional treated, excellent in corrosion resistance, and has a simple structure and can use a high saturation magnetized electrical steel sheet. Even after 100 hours of use, no rust occurred, and the motor performance showed the same performance as a normal motor other than the motor for the pump.

Example 6

A 50H800 non-oriented electrical steel sheet was punched into a small 48 mm audio power transformer, strain annealed, and an iron core was fabricated. The capacity was 100VA (100V / 6V: lA / l6A).

In this case, condition 1 was punched while caulking, while condition 2 was punched without caulking.

The present invention was applied to condition 2. That is, a partial condensate obtained by diphenyldiethoxysilane, dimethylmonomethyltriethoxysilane and tetraethoxysilane from the ratio of 1: 4: 5 is sprayed on the surface of the iron core including the cross section and dried to form a film. I was. At this time, two coat application processes with warm air drying at 75 ° C. for 5 minutes were performed to obtain an average film thickness of 7 μm. Then, winding was completed.

Condition 1 is a power transformer manufactured by a conventional method without applying the present invention. In the transformer of condition 1, the iron core is not completely fixed and noise is generated, and it is necessary to separately install a holder for fixing. However, in the transformer of condition 2 according to the present invention, most of the noise from the iron core does not occur and is redundant. Holder was not needed.

Example 7

Using the present invention, a brushless DC motor of a 4-pole motor was manufactured. The binding liquid used was one obtained by drying a partial condensate (concentration 20%) obtained by monomethyltrimethoxysilane and tetramethoxysilane from a weight ratio of 3: 1 to form a binding film. The stator is an armature consisting of twelve split cores (the lamination of the core pieces 1 shown in Fig. 2) 1A. The outer diameter of the assembled circular core is 120 mm. The split core 1A is processed by punching out an electrical steel sheet, and pressing the center portion of the stacked upper and lower electrical steel sheets on the bars 4a and 4b of FIG. 3 to fix the laminate, and to the void side with the rotor. The binding liquid was applied only to the punched end surface except for the cross section of the corresponding teeth 2, and then dried at room temperature while being fixed to form a binding film. As the method of applying the binding liquid, a method of sufficiently applying only a cross section processed by applying with a brush was used, but in this case, a gap 5 'formed by an inclined portion of the punching process in the processed cross section of the laminated core (Fig. In 4), the binding liquid was applied to the brush so that the average film thickness after drying was 10 µm.

Next, the direct winding 6 was wound around the split core 1B having the binding film while drying the binding liquid as shown in FIG. 5, and further, the portion except for the void side portion was dipped into the binding liquid as shown in FIG. . This fixed the windings and increased the binding strength and rigidity of the core. Next, the divided cores were assembled, and the abutment plates 9a and 9b were placed on the upper and lower surfaces of the core pack portion of the core, and simultaneously pressed into the case 10. In the case of applying the butt plate, the binding liquid is applied to the surface in contact with the core and the butt plate is attached to the core. As shown in Fig. 6, the binding core is applied to the outer periphery of the divided core assembly with the butt plate, and is pressed into the case. After that, it is dried completely.

Using the method of the present invention, the electrical insulation and the fixed binding between the conductors, the lamination of the electrical steel sheets, the conductors and the split cores, the split cores, the cores and the case can be tolerated by the permanent magnets used in the motor at room temperature. It can be up to or above 500 ℃. Therefore, since it is higher than the conventional heat-resistant winding temperature of 200 degreeC, it is possible to flow a lot of electric current which flows in a winding, and high output is possible. Moreover, since the rigidity of the whole motor becomes high, it can be taken as one of countermeasures against noise and vibration. By using the binding according to the present invention, it is possible to suppress short-circuit currents that are problematic for caulking, welding, and the like, and to reduce loss and improve controllability. In addition, since heat generation from the conducting wire and the core can be enhanced through the binding film of the present invention, it is also effective in increasing the motor output and low copper loss (resistance of resistance increase due to temperature rise).

Example 8                 

A four-pole IPM (implanted magnet) motor was manufactured by the armature made in Example 7 and the IPM rotor to which the present invention was applied. This motor controls the torque at low speed. The binding liquid used was immersed in a solution consisting of Si0 ₂ of a partial condensate obtained by using monomethyltriethoxysilane and tetraethoxysilane in a ratio of 1: 3 as a filler per 100 parts by weight of A1 ₂ 0 ₃ 2g having a particle diameter of 1 Onm. The average film thickness after drying was 5 µm, followed by drying to form a binding film.

The magnetized SmCo sintered magnet was immersed in the binding liquid and dried, and as shown in FIG. 8, the magnet 12 was inserted into the IPM rotor core 11. The rotor core into which the magnet was inserted was also immersed in the binding liquid, and after the excess binding liquid was removed while spraying the compressed gas, the rotor core was pressed into the rotating shaft 13. This was dried to form the binding film 14 of the partial condensate. The application of the present invention to an IPM rotor serves as an insulating treatment of the magnet surface together with the fixing of the magnet, up to a temperature (about 500 ° C.) at which the SmCo magnet can tolerate at room temperature. The heat transfer and insulation between the core and the core can also be improved, the rise of the magnet temperature can be suppressed, and the short circuit current between the magnet and the core can also be suppressed. By filling the gap between the rotor and the rotating shaft with a binding film, it also serves to suppress the temperature rise of the rotor. Although the SmCo magnet can be used at a higher temperature than the FeNdB magnet, the temperature rise of the sintered magnet of SmCo can also be suppressed, and the demagnetization of the magnet can also be suppressed.

Example 9                 

The bipolar induction motor was fabricated using the present invention. The binding liquid used was a partial condensate obtained in the ratio of diphenylethoxysilane, dimethylmonomethyltriethoxysilane and tetraethoxysilane 1: 5: 4, which was dried to form a binding film. The stator core is an integral punching core in which three caulks for temporary fixation are placed and fixed in a circumferential direction at a distance of 2 mm from the outer circumference. The binding liquid was sprayed all over the slots of the core and dried to form a binding film. At this time, the film coating process was performed twice with 75 degreeC x 5 minutes of warm air drying, and the average film thickness was 7 micrometers. next. The armature winding attached the binding liquid to dry the winding surface, the dried winding was inserted into the slot of the stator core with an inserter, and then the whole armature was immersed in the binding liquid. A hot air of 100 ° C. was blown from the air gap side with the rotor to blow off the excess liquid attached on the tooth-edges, so that the thickness of the air gap surface was 0.1 mm or less. 100 degreeC hot air also had the effect which accelerates drying. Finally, it dried at 300 degreeC and formed the final binding film.

When the present invention is used, it can be used up to 500 ° C, and the binding core of the laminated core, the short circuit current suppression, the low noise due to the reduction of tooth vibration, the high output due to the high heat generation, the low copper loss (the increase in resistance due to the temperature rise can be suppressed). You can expect).

Example 10

An induction motor was manufactured by an armature core made in Example 9 and an aluminum diecast rotor to which the present invention was applied. The rotor was immersed in the binding liquid in the punched core, dried and bound, followed by aluminum die casting. The binding liquid used is a mixed liquid in which monoethyltrimethoxysilane, tetramethoxysilane and dimethyldimethoxysilane are in a ratio of 5: 3: 2. It was dried to form a binding film.

The binding film formed by drying can withstand aluminum die casting, and can suppress the short circuit of aluminum which is a secondary conductor, and a core. Therefore, stabilization of the high output performance of the induction motor can be realized.

Example 11

The binding liquid was applied to the surface of the winding and dried, and the winding-type transformer core subjected to the winding was again immersed in the binding liquid and dried. As the binding solution used, a partial condensate obtained from the ratio of diphenyltriethoxysilane and monoethyltriethoxysilane 1: 9 was used, and three overlapping coating treatments were applied with warm air drying at 80 ° C for 15 minutes. Then, this film was dried to form a binding film.

By applying the present invention to a transformer core, it is possible to operate at 200 ° C, improve the rigidity of the core, and reduce the noise to 3 dB.

Example 12

By applying the present invention, a core having voids was produced and used in a reactor for boosted choppers. As shown in Fig. 9, the wound core 21 is molded and immersed in a partial condensate obtained by binding the binding liquid diphenyldiethoxysilane and tetramethoxysilane in a ratio of 1.5: 8.5, and dried. The core laminate was bound while maintaining the shape. Then, in order to process the space | gap part 22, it pressed by the vicinity of the space | gap process and sheared. On the other hand, the winding to be inserted into the sheared winding core was previously formed by winding the winding in which the binding liquid was attached to the surface by winding, and then immersed in the binding liquid to dry again. Thereafter, the molded core is inserted into the shear core, and the two sheared cores face each other to form the voids, and then the nonmagnetic insulator 23 is inserted in order to maintain the voids. The winding 24 was performed. In that state, it put in the binding liquid again, the binding film 25 was formed, and it dried.

Since this binding film can endure at least up to 500 degreeC, this reactor can fully operate until components other than a reactor become heat-resistant temperature. Since the core itself is highly rigid and the voids that cause noise vibration are also integrated structures, noise can be reduced.

Example 13

The grain-oriented electrical steel sheet is punched and spirally processed to form a circular armature core for one 8-pole motor. The spiral cores were piled up and stacked to be immersed in a solution containing a partial condensate obtained from a 1: 1 ratio of binding liquid monomethyltrimethoxysilane and tetramethoxysilane, and immersed so as to have a thickness of 15 탆 as a result of drying. After drying, the armature core is made. Strain annealing was then performed at 800 ° C. Thereafter, the binding liquid was attached to the winding surface, dried at room temperature, and the winding was attached to this armature core to produce an armature. In the spiral core of this grain-oriented electrical steel sheet, the teeth become the rolling direction of the grain-oriented electrical steel sheet, and the magnetic properties of the teeth are very excellent, so that the motor iron loss can be reduced. In spiral processing, peeling of the surface coating occurs, but by the treatment of the present invention, the surface coating of the coating peeling part is also formed, and the problem can be avoided. In addition, the armature core that has been immersed in the binding liquid and dried and fixed can be strain annealed at 800 ° C., so that the strain due to the spiral processing can be removed, and the characteristics of the grain-oriented electrical steel sheet can be utilized.

 Example 14

The simple compact heating furnace of 500 degreeC was produced using this invention.

As the binding solution, a partial condensate solution obtained from a ratio of 1: 1 of monomethyltrimethoxysilane and tetramethoxysilane was used, and the binding solution was attached to the heater wire surface. The heater wire dried at room temperature was placed on the inner wall surface of the heating furnace, and the entire inner wall member was again immersed in the binding liquid and dried to produce an inner wall member with a heater. A heating furnace was manufactured using the inner wall member equipped with this heater. The heater wire is exposed inside the furnace, but a dry film is formed on the surface of the heater wire by the binding liquid, and the electrical insulation effect can be maintained to a high temperature. This furnace is simple in structure and suitable for small furnaces.

Example 15

The bobbinless movable coil of the voice coil motor for HDD was manufactured using this invention. As the binding solution, using the partial condensate solution obtained from the 1: 1 ratio of monomethyltrimethoxysilane and tetramethoxysilane, the binding solution was attached to the surface of the flat aluminum conductor, and the flat aluminum conductor dried at room temperature was It wound around the motor coil and molded. Then, the whole shaping coil was immersed again in the binding liquid, and it dried and produced the movable coil. Fixing and insulation by the binding liquid used in this example were not problematic even up to the melting point of aluminum, and were also advantageous in mechanical vibration and strength which were problematic in voice coil motor movable coils.

Example 16

A four-pole IPM (implanted magnet) motor was manufactured by the armature core made in Example 16 and the IPM rotor to which the present invention was applied. This motor controls the torque at low speed. The binding solution used was a mixed solution of tetramethoxysilane, monomethyltriethoxysilane and diphenyldiethoxysilane in a 2: 1: 1 ratio, which was dried to form a binding solution.

The magnetized FeNdB sintered magnet was immersed in the binding liquid and dried, and as shown in FIG. 8, the magnet 12 was inserted into the IPM rotor core 11. The rotor core into which the magnet was inserted was also immersed in the binding liquid, and after removing the excess binding liquid by blowing compressed gas, it was pressed into the rotating shaft 13. This was dried to form the binding film 14 of the partial condensate. The application of the present invention to an IPM rotor, together with the fixing of the magnet, serves as a surface treatment of the magnet, and also improves the heat transfer and insulation between the magnet and the core, and suppresses the increase in the magnet temperature. It is also possible to suppress the short-circuit current between the magnet and the core. By filling the gap between the rotor and the rotating shaft with a binding film, it also serves to suppress the temperature rise of the rotor. The temperature rise of the FeNdB sintered magnet can also be suppressed, and the magnetization reduction of the magnet can also be suppressed.

Example 17

The bipolar induction motor was fabricated using the present invention. The binding solution used was monomethyl methoxysilane, which was dried to form a binding film. The stator cores are integrally punched cores laminated and fixed so that three caulks for temporary fixation can enter at regular intervals in the circumferential direction at a point of 2 mm from the outer circumference. After the slots of the core were covered with insulating paper and the armature windings were attached, the whole armature was immersed in the binding film. Thereafter, 100 ° C. hot air was blown from the air gap side with the rotor, and the liquid attached to the tooth-edges was blown off to make the film thickness of the air gap surface 0.1 mm or less. Thereafter, it was dried to form a binding film. Hot air at 100 ° C. had an effect of accelerating drying.

When the present invention is used, binding of the laminated core, suppression of short-circuit current, low noise due to reduction of tooth line vibration, high output due to high heat generation property, and low copper loss (resistance suppression due to temperature rise) can be expected.

Example 18

The wound transformer core provided with the windings was immersed in the binding liquid and dried. The binder used was a modified silicone polymer, that is, an epoxy modified polymer, which was dried to form a binding film.

By applying the present invention to a transformer core, the rigidity of the core is improved and the noise is reduced to 3 dB.

Example 19

In Example 7, the stator was immersed in the binding liquid to dry, laminated and bound, and then annealed at 750 ° C. The motor iron loss by this annealing was reduced by 8%.

Example 20                 

By applying the present invention, a core having voids was produced and used in a reactor for boosted choppers. As shown in Fig. 9, the wound core 21 was molded, dipped into the binding liquid in the state, dried, and the core laminate was bound while maintaining the shape of the mold. Then, in order to process the space | gap part 22, it pressed by the vicinity of the space | gap process and sheared to form the space | gap. In order to maintain the space | gap, after the nonmagnetic insulator 23 was inserted, the winding 24 was performed. In that state, once again, it was put into the binding liquid, and the binding film 25 was formed and dried.

Since the core itself is highly rigid and the voids that cause noise vibrations are also integral structures, the reactor can reduce noise.

Example 21

The grain-oriented electrical steel sheet was punched and spirally processed to form a circular armature core for one 8-pole motor. The spiral cores were rotated and stacked to be immersed in a binding liquid, dried and fixed to form an armature core. In the spiral core of the grain-oriented electrical steel sheet, the teeth become the rolling direction of the grain-oriented electrical steel sheet, and the magnetic properties of the teeth are very excellent, thereby reducing the motor iron loss. In spiral processing, the peeling of the surface coating occurs, but the surface coating of the coating peeling part is also formed by the treatment of the present invention, and the problem can be avoided.

Example 22

A polygon mirror motor for a laser beam printer was fabricated on a print base using an electronic steel sheet. The print base was a laminate of two sheets of electronic steel sheets, on which an armature coil was fixed. The binding method of the present invention was used to fix the armature coil and the base and to bond the electronic steel sheet. After wrapping two sheets of electronic steel, the armature coils were fixed, immersed in the binding liquid, dried by hot air, and fixed. In the binding liquid, the binding force is maintained even when the coil temperature rises, and the out gas also has no problem, and the binding of the two sheets of printed steel sheets and the fixing of the armature coils on the print base are increased due to the motor driving. Since the binding is sufficiently fixed and there is no problem of outgas, the blurring of the mirror is not a problem.

Example 23

The winding core of the transformer was made of an amorphous metal magnetic material, and after being immersed in the binding liquid, it was dried while maintaining its shape. A transformer was fabricated using this core, and placed in a magnetic shield case to drive the transformer. In the magnetic shielding case, a nanocrystal high permeability material was laminated, immersed in the same binding liquid, dried, and assembled into a laminated panel. Although the amorphous metal material is very thin, the rigidity of the core and the shielding plate is low, but the binding method of the present invention can be easily integrated and strengthened, and the core and the shielding plate can be easily fixed, and the amorphous metal or the nanocrystal of the Fragments are less likely to occur.

In iron cores used for energy converters such as motors, short circuiting of secondary conductors, casings, bolts, etc., in the cross section or surface of the iron core increases the loss of equipment and decreases torque, thrust or output. As the performance changes, insulation of the ends or surfaces of the iron core is of great importance for improving and stabilizing device performance. The ability to easily perform this insulation treatment in a short time is industrially valuable.

According to the present invention, an insulation treatment of a cross section of an iron core which is very excellent in insulation, corrosion resistance, adhesion, heat resistance and magnetic properties improvement effect can be performed in a short time at low temperature without pretreatment such as degreasing cleaning or annealing.

Therefore, it is an effective method for improving and stabilizing device performance, and because the process is simple, it is possible to lower the cost and is a technology of great industrial value. High efficiency and low loss of equipment are important for energy and environmental issues, and the use of this invention is socially valuable. In addition to home appliances, FA devices, and OA devices, a wide range of applications such as automobiles and trains can be considered.

In addition, in the iron core used in various forms for various transformers, the present invention shorts secondary conductors, casings, bolts, etc. at the ends or surfaces of the iron core, resulting in increased loss of equipment and damage. In addition, since such performance becomes a cause of non-uniformity, insulation treatment of the end face and the surface of the iron core is very important in terms of improving and stabilizing the device performance. The ability to easily perform this insulation treatment in a short time is industrially valuable. In addition, it may help to improve the properties that heat resistance is required in the annealing after processing.

In addition, the high temperature operating electric apparatus according to the present invention can further increase the heat resistance temperature of the winding, and can increase the current flowing through the winding since there is no problem up to the fixed-constant high temperature of the core and the yoke made of the winding or the magnetic material, High output of the device is possible. In addition, this high temperature operation electric machine can be used in the place which becomes high temperature.

Claims (47)

An insulating film having an average film thickness of 2-100 µm containing 30 parts by mass or more of a silicon compound converted into Si0 ₂ is treated at an iron core cross section, and the insulating film has heat resistance of 400 ° C. × 1 hour or more in air. Iron core having excellent cross-sectional insulation. The iron core having excellent cross-sectional insulation properties according to claim 1, wherein the insulating film has an average film thickness of 2 µm or more and a breakdown voltage of 30 V or more. delete The silicone compound according to claim 1 or 2, wherein the silicone compound is a silicone resin, an alkali silicate, colloidal silica, a low melting glass frit, (R ^l ) _n Si (X ¹ ) _4-n [where n is 0 to 3 R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group And n = 0, 1, 2, a plurality of R ² may be different] pure silicon polymer which is a compound produced by one or two or more hydrolysis reactions and dehydration condensation reactions. ³ ) _n Si (X ² ) _4-n [wherein an integer of n = 0 to 3, R ³ is an organic functional group other than an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ³ may be different; , X ² is an alkoxy group represented by Cl or O (R ⁴ ), where R ⁴ is an alkyl group and a plurality of R ⁴ may be different in case of n = 0, 1, 2] A modified silicone polymer comprising a compound produced by one or two or more hydrolysis and dehydration condensation reactions of a substance, and (R ^l ) _n Si (X ¹ ) _4-n [where n is 0 to 3 Integer, R ¹ is an alkyl group or a phenyl group, in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group When n = 0, 1, 2, a plurality of R ² may be different], and one or two or more of the compounds represented by (R ³ ) _n Si (X ² ) _4-n [wherein n is an integer of 0 to 3, R ³ is an organic functional group other than an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ³ may be different, and X ² is represented by Cl or O (R ⁴ ) An alkoxy group, wherein R ⁴ is an alkyl group, and in the case of n = 0, 1, 2, a plurality of R ⁴ may be different], by one or two or more hydrolysis reactions and dehydration condensation reactions of a substance represented by Tues generated That is water mixed iron core having an excellent insulating section, it characterized in that the dry film comprises one or two or more in the silicone polymer according to claim. The method of claim 4, wherein the pure silicon polymer is tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, monomethyltrimethoxy having 4 or less carbon atoms of R ¹ and R ² alkyl groups. Silane, monomethyltriethoxysilane, monomethyltriisopropoxysilane, monomethyltributoxysilane, monoethyltrimethoxysilane, monoethyltriethoxysilane, monoethyltriisopropoxysilane, monoethyltribu Selected from methoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane and diphenyldiethoxysilane The compound is produced by one or two or more hydrolysis and partial dehydration condensation reaction, wherein the modified silicone polymer is an acrylic modified silicone polymer, alkyd modified silicone An iron core having excellent cross-sectional insulation, characterized in that it is one kind or two or more kinds of polymers, polyester acrylic modified silicone polymers, epoxy modified silicone polymers, amino modified silicone polymers, vinyl modified silicone polymers, and fluorine modified silicone polymers. The metal element or semimetal other than oxygen (O), carbon (C), hydrogen (H), nitrogen (N), sulfur (S), and fluorine (F) in the insulating film. Element M is mainly silicon (Si), and Si is mainly present in the form having a bond of Si-0, wherein M other than Si is Li, Na, K, Mg, Ca, Cr, Mn, Fe, Co, Iron core having excellent cross-sectional insulation, characterized in that it is one or more selected from Ni, Cu, Zn, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, Sb and Bi. The total mass of elements other than oxygen (O), carbon (C), hydrogen (H), nitrogen (N), sulfur (S) and fluorine (F) in the insulating film. Si, Li, Na, K, Mg, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, An excellent cross section wherein the total mass ratio of Sb and Bi is 90 parts by mass or more, and the mass ratio of Si is 50 parts by mass or more with respect to the total mass of elements other than O, C, H, N, and S in the insulating film. Iron core with insulation. The iron core having excellent cross-sectional insulation properties according to claim 1 or 2, wherein the main body of the iron core comprises a non-oriented electrical steel sheet. A transformer iron core with excellent insulation and corrosion resistance, characterized by having an insulating film made of pure silicon polymer on the cross section and the surface of a laminated steel sheet of magnetic material. A transformer iron core having excellent insulation and corrosion resistance, having a conductor on an iron core laminated with a magnetic material, and having an insulating film made of pure silicon polymer on the surface or gap between the magnetic material and the conductor. The transformer core according to claim 9 or 10, wherein the insulating film has an average film thickness of 0.5 to 100 µm and a breakdown voltage of 30 V or more. A plurality of magnetic material pieces punched into substantially the same shape are laminated, and a magnetic member for an electronic device integrated by a silicone polymer, wherein the magnetic material pieces are integrated without locally adding strain or stress to each magnetic material piece. Magnetic member for electronic equipment. The magnetic member for an electronic device according to claim 12, wherein the armature core is composed of a plurality of split cores. A solution having the ability to fix and bind adjacent members to each other after application and drying between adjacent members, and also to fix and bind at high temperatures of 200 ° C. or higher, wherein (R ¹ ) _n Si (X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, and X ¹ is different from Cl or O (R ² ) And an alkoxy group represented by R ³ , wherein R ² is an alkyl group, and when n = 0, 1, or 2, a plurality of R ² may be different]. High temperature operation characterized by using a pure silicon polymer comprising a compound produced by the partial dehydration condensation reaction, and having an integrated conductor or lead and magnetic material, while ensuring electrical insulation between homogeneous or heterogeneous adjacent members. Electrical equipment. In the manufacture of iron cores, the material is punched or sheared into a predetermined shape, followed by lamination, clamping, annealing or omitting annealing, insulation coating treatment on the end face of the iron core, drying or firing, or drying and firing As a method of insulating coating the cross section, which comprises processing an iron core by simultaneously carrying out the treatment, As an insulation coating agent, a silicone resin, an alkali silicate, colloidal silica, a low melting glass frit, (R ^l ) _n Si (X ¹ ) _4-n [where n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, In the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, n = 0, 1, 2 In this case, a plurality of R ² may be different] pure silicon polymer sol, a solution containing a compound produced by one or two or more hydrolysis and dehydration condensation reaction, (R ³ ) _n Si (X ² ) _4-n [wherein an integer of n = 0 to 3, R ³ is an organic functional group other than an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ³ may be different, and X ² is and the alkoxy group represented by Cl or O (R ^4), where, R ⁴ is water, which is represented by the alkyl group, n = the case of 0, 1, 2 there is a plurality of R ⁴ may be different; Of one or two or more kinds of a hydrolysis reaction and a modified silicone polymer sol dehydration solution containing the resulting compound by a condensation reaction, and _{^{(R l) n Si (X}} 1) 4-n [ where, n is from 0 to An integer of 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² Is an alkyl group, and in the case of n = 0, 1, 2, a plurality of R ² may be different] and one or two or more of the compounds represented by (R ³ ) _n Si (X ² ) _4-n [where , n is an integer of 0 to 3, R ³ is an organic functional group other than an alkyl group or a phenyl group, when n = 2, 3, a plurality of R ³ may be different, X ² is represented by Cl or O (R ⁴ ) Is an alkoxy group, wherein R ⁴ is an alkyl group, and in the case of n = 0, 1, 2, a plurality of R ⁴ may be different]. Generated by Using one or two or more of the silicone compounds selected from the mixed silicone polymer sol, which is a solution containing the compound, to perform dipping treatment, spraying treatment or brush coating, or a combination thereof, to dry or fire, or An average thickness of the film after drying and firing is set at 0.5 to 20 µm. 16. The tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane and monomethyltri according to claim 15, wherein the pure silicon polymer sol has 4 or less carbon atoms of the alkyl groups of R ¹ and R ² . Methoxysilane, monomethyltriethoxysilane, monomethyltriisopropoxysilane, monomethyltributoxysilane, monoethyltrimethoxysilane, monoethyltriethoxysilane, monoethyltriisopropoxysilane, monoethyl Tributoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane and diphenyldiethoxysilane Is a solution comprising a compound produced by one or two or more hydrolysis and partial dehydration condensation reaction selected from, wherein the modified silicone polymer sol is acrylic modified silicone poly , Cross-linked iron core, characterized in that a solution containing one or two or more of alkyd modified silicone polymer, polyester acrylic modified silicone polymer, epoxy modified silicone polymer, amino modified silicone polymer, vinyl modified silicone polymer and fluorine modified silicone polymer Insulation film treatment method. 17. The metal or semimetal element other than oxygen (O), carbon (C), hydrogen (H), nitrogen (N), sulfur (S) and fluorine (F) in the insulating film. M is mainly silicon (Si), and Si is mainly present in a form having a bond of Si-0, and in addition to silicon, M is Li, Na, K, Mg, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, Sb and Bi containing one or two or more selected from the above. The total mass of the element according to claim 15 or 16, in addition to oxygen (O), carbon (C), hydrogen (H), nitrogen (N), sulfur (S), and fluorine (F) in the insulating film. Si, Li, Na, K, Mg, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Ti, Zr, Nb, B, Al, Ge, Sn, P , The total mass ratio of Sb and Bi is 90 mass% or more, and the mass ratio of Si is 50 mass% or more with respect to the total mass of elements other than O, C, H, N and S in the insulating film. Insulation coating method of cross section. 17. The polymer sol according to claim 15 or 16, further selected from the group consisting of a pure silicon polymer sol, a modified silicone polymer sol, a mixed silicone polymer sol and mixtures thereof as a filler, in addition to the insulating coating agent. 0.1 to 50 parts by mass of an inorganic oxide powder particle, an inorganic oxide colloidal substance, an organic resin powder particle, and an organic resin emulsion solution are added as 0.1 to 50 parts by mass as a solid content, per 100 parts by mass of SiO ₂ . Insulation coating method of cross section. 20. The method of claim 19, wherein the inorganic powder particles or colloidal material, the primary particle diameter of 7 to 50Onm SiO ₂ , A1 ₂ 0 ₃ , Ti0 ₂ , Zr0 ₂ , a composite material thereof and mixtures thereof 1 or 2 or more types selected from the group which are used, The insulation coating processing method of the iron core cross section characterized by the above-mentioned. 20. The organic resin powder particles or emulsion solution material thereof according to claim 19, wherein the particle diameter is 50-10000 nm of acrylic, polystyrene, polyethylene, polypropylene, polyamide, polycarbonate, polyurethane, melamine, phenol, epoxy resin. 1 or 2 or more types selected from the group consisting of these copolymers and mixtures thereof. 17. The method of claim 15 or 16, wherein when treating the iron core cross section, two or more overlapping coating treatments are performed while drying for 30 seconds or more at room temperature to 300 ° C. . 17. The method according to claim 15 or 16, wherein, in the case of performing the overlapping coating treatment, at least one coating treatment is selected from inorganic oxide powder particles, inorganic oxide colloidal materials, organic resin powder particles, and an organic resin emulsion solution. Or a filler which is a species or two or more materials, or a group consisting of SiO ₂ , A1 ₂ 0 ₃ , Ti0 ₂ , Zr0 ₂ , composite materials thereof and mixtures thereof having a primary particle diameter of 7 to 50 nm. The insulating coating agent which mix | blended and mixed the filler which is 1 type, or 2 or more types of inorganic powder particles or a colloidal substance is apply | coated, and it is processed so that the layer containing this filler may be 0.2-10 micrometers in the thickness after drying, and at least for the final coating process Insulating coating agent which does not add and mix a filler is apply | coated, and the average thickness of all the insulating coating agents is set to 0.5-20 micrometers, Soft coating treatment method. 17. The method according to claim 15 or 16, wherein the iron core comprises a non-oriented electrical steel sheet. A method of manufacturing a transformer core with excellent insulation and corrosion resistance, wherein a pure silicon polymer is applied to a cross section or surface of a transformer core in which magnetic materials are laminated and dried to form an insulating coating. A method of manufacturing a transformer core with excellent insulation and corrosion resistance, characterized by laminating a magnetic material, applying a conductor, and then applying an insulating film of pure silicon polymer and drying to fix the magnetic material and the conductor. 27. The method for manufacturing a transformer core according to claim 25 to 26, wherein the insulating coating after application and drying has an average film thickness of 0.5 to 100 m and a breakdown voltage of 30 V or more. The method for producing a transformer core having excellent insulation and corrosion resistance according to claim 25 or 26, wherein a thermosetting compound is used as the pure silicon polymer. 26. The method of claim 25 or claim 26, as an organosilicon _{^{compound, (R l) n Si (}} X 1) 4-n [ where, n is an integer, R ¹ of 0 to 3 is an alkyl group or a phenyl group, n = 2, In the case of 3, a plurality of R ¹ may be different, X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, and when n = 0, 1, 2 R ² may be different], by using one or two or more of the materials represented by one, two or more of the application and drying treatment by one or more methods of applying by dipping, spraying, brush. A method for producing a transformer iron core having excellent insulation and corrosion resistance, wherein R ¹ and R ² are a hydrocarbon group having 1 to 6 carbon atoms, and X ¹ is an alkyl group having 1 to 6 carbon atoms. 30. The method of claim 29, wherein the pure silicon polymer contains at least 50% or more of Si (X ¹ ) ₄ , (R ¹ ) Si (X ¹ ) ₃ . 27. The SiO ₂ , A 1 ₂ O ₃ having a primary particle diameter of 7 to 50Onm as an inorganic powder particle or colloidal material per Si0 ₂ min 100 part by mass contained in the pure silicon polymer as an additive. Iron core having excellent insulation and corrosion resistance, characterized by adding 0.1 to 50 parts by mass of at least one selected from the group consisting of TiO ₂ , ZrO ₂ , composite materials thereof, and mixtures thereof. Method of preparation. 27. The method for producing a transformer iron core excellent in insulation and corrosion resistance according to claim 25 or 26, wherein the pure silicon polymer has a drying temperature of 200 deg. A method of binding a magnetic member for an electronic device composed of a plurality of magnetic material pieces, comprising: arranging and assembling the plurality of magnetic material pieces, and then applying a solution that exhibits the ability to bind the magnetic material pieces by drying, or Or, the simple binding method of the magnetic member for electronic devices characterized by drying after being immersed in the said solution, and integrating. After stacking a plurality of magnetic material pieces punched into substantially the same shape, and applying a solution that exhibits the ability to bind the magnetic material pieces by drying, or dipped in the solution, it is dried and integrated Simple binding method of a magnetic member for an electronic device. The electronic device according to claim 33 or 34, wherein as a solution which exhibits the ability to bind magnetic material pieces by drying, a solution containing at least one of pure silicon polymer and modified silicone polymer as a main component is used. Simple binding method of magnetic member. The pure silicon polymer component according to claim 33 or 34, wherein ((R ¹ ) _n Si (X ¹ ) _4-n [ _where n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, n = In the case of 2, 3, a plurality of R ¹ may be different, and X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, and when n = 0, 1, or 2 And a plurality of R ² may be different from each other.] A simple binding method of a magnetic member for an electronic device, characterized by using an organosilicon compound produced by one or two or more hydrolysis and partial dehydration condensation reactions of a substance represented by . The modified silicone polymer according to claim 33 or 34, wherein the modified silicone polymer is an acrylic modified silicone polymer, an alkyd modified silicone polymer, a polyester acrylic modified silicone polymer, an epoxy modified silicone polymer, an amino modified silicone polymer, a vinyl modified silicone polymer and a fluorine modified silicone. The simple binding method of the magnetic member for electronic devices characterized by using 1 type (s) or 2 or more types of polymers. A solution having the ability to fix and bind adjacent members to one another after application and drying between adjacent members, and also to fix and bind at high temperatures of 200 ° C. or higher, wherein (R ¹ ) _n Si (X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, in the case of n = 2, 3, a plurality of R ¹ may be different, and X ¹ is selected from Cl or O (R ² ) Alkoxy group to be represented, wherein R ² is an alkyl group, and when n = 0, 1, 2, a plurality of R ² may be different]. Pure silicon polymer containing a compound produced by the dehydration condensation reaction is used, and the solution is applied to the conductor or the conductor and the magnetic material, or the conductor or the conductor and the magnetic material are immersed in the solution, and then dried to homogeneous or heterogeneous. Electricity between adjacent members of While maintaining the open method of producing a high temperature operating electrical equipment, comprising a step of integrating the conductors or conductors and magnetic materials. The compound of claim 38, wherein (R ¹ ) _n Si (X ¹ ) _4-n [wherein n is an integer of 0 to 3, R ¹ is an alkyl group or a phenyl group, and in the case of n = 2, 3, a plurality of R ^{1 s} are X ¹ is an alkoxy group represented by Cl or O (R ² ), where R ² is an alkyl group, and when n = 0, 1, 2, a plurality of R ² may be different. In the organosilicon compound to be represented, at least 80% or more of the organosilicon compound of n = 0 and 1 is contained, and the composition ratio of the organosilicon compound of n = 0 and the organosilicon compound of n = 1 is 1:20 to A method for producing a high temperature operating electric machine, characterized by using a pure silicon polymer in the range of 4: 1. The method for producing a high temperature operating electric machine according to any one of claims 38 to 39, wherein a thermosetting pure silicon polymer is used as the pure silicon polymer (compound). 40. The method according to claim 38 or 39, wherein, as an additive to the pure silicon polymer, one or two or more kinds of SiO ₂ , A1 ₂ 0 ₃ , and TiO ₂ having a primary particle diameter of 7-500,000 nm are selected from 0.1 to 10 weight part is added, The manufacturing method of the high temperature operation electric machine characterized by the above-mentioned. 40. The method for manufacturing a high temperature operating electric machine according to claim 38 or 39, wherein the film thickness after drying is 0.5 to 100 m. 40. The method for manufacturing a high temperature operating electric machine according to claim 38 or 39, wherein the drying temperature is 200 ° C or lower. A magnetic member for an electronic device, characterized in that a solution composed of at least one pure silicon polymer and a modified silicone polymer is applied to a magnetic member or the magnetic member is immersed in the solution, and then the applied or immersed magnetic member is dried. Surface treatment method. 45. The method of claim 44 ^{_{wherein, R l n Si (OR 2}} ) 4-n [ where, n is from 0 to 3 integers, R ¹ is an alkyl group or a phenyl group, R ² is alkyl group of at least one substance, which is represented by the An organic silicon compound produced by hydrolysis and partial dehydration condensation reaction is used as a pure silicon polymer. 46. The method of claim 44 or 45, wherein the modified silicone polymer is an acrylic modified silicone polymer, alkyd modified silicone polymer, polyester acrylic modified silicone polymer, epoxy modified silicone polymer, amino modified silicone polymer, vinyl modified silicone polymer and fluorine modified silicone polymer. The surface treatment method of the magnetic member for electronic devices characterized by the above-mentioned. The surface treatment method of the magnetic member for electronic devices of Claim 44 or 45 whose magnetic member is a Sm-Co magnet or a Fe-Nd-B magnet.

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