CN101351575A - Electromagnetic steel sheet having insulating coating film and method for producing same - Google Patents
Electromagnetic steel sheet having insulating coating film and method for producing same Download PDFInfo
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- CN101351575A CN101351575A CNA2006800498788A CN200680049878A CN101351575A CN 101351575 A CN101351575 A CN 101351575A CN A2006800498788 A CNA2006800498788 A CN A2006800498788A CN 200680049878 A CN200680049878 A CN 200680049878A CN 101351575 A CN101351575 A CN 101351575A
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Abstract
An insulating coating film containing a composite resin composed of a polysiloxane and a polymer containing C is formed on the surface of an electromagnetic steel sheet. Consequently, there can be obtained an electromagnetic steel sheet which has an insulating coating film having corrosion resistance and punchability equivalent to or higher than insulating coating films containing Cr.
Description
Technical field
The present invention relates to have the electro-magnetic steel plate and the manufacture method thereof of insulating coating.The present invention be more particularly directed to have the electro-magnetic steel plate and the manufacture method thereof of the insulating coating that does not contain Cr in fact.
Background technology
The insulating coating of the electro-magnetic steel plate that uses in motor, transformer etc. not only requires interlamination resistance, also requires various characteristics.The stability the when convenience when shaping, keeping, use etc. for example.And,, thereby carry out the exploitation of various insulating coatings according to its purposes because electro-magnetic steel plate is used for multiple use.
For example, on electro-magnetic steel plate, implement punch process, shear processing, during bending machining etc., because of residual strain makes the magnetic properties variation.Therefore, in order to recover the magnetic properties of variation, how to eliminate strain annealing with about 750～850 ℃.In this case, insulating coating must hold out against elimination strain annealing.
Insulating coating roughly is divided into (a) and payes attention to weldability and thermotolerance, holds out against the inanimate matter overlay film (not containing organic resin in principle) of eliminating strain annealing; (b) to realize that simultaneously stampability, weldability are target, be the half organic overlay film that main component contains organic resin to hold out against the inanimate matter of eliminating strain annealing; (c) can not implement to eliminate these 3 kinds of organic overlay films of strain annealing because of special purpose.Wherein, holding out against what eliminate strain annealing as universal product is the overlay film that contains inanimate matter of (a) and (b), and the both comprises chromium cpd in overlay film.Particularly, type (b) and contain the chromate insulating coating of organic resin is compared with the mineral-type insulating coating and can especially be improved stampability, thereby extensively utilizes.
For example, a kind of electro-magnetic steel plate of in Japanese Patent Publication 60-36476 communique, settling sth. according to policy or law: in containing the dichromic acid salt aqueous solution of a kind of divalent metal at least, with respect to the CrO in the aqueous solution with electrically insulating coating
3: 100 weight parts, cooperate vinyl acetate between to for plastic/vinyl acetate (VeoVa) (TM) than the resin emulsion that is 90/10～40/60 ratio with the ratio of resin solid composition 5～120 weight parts and organic reducing agent 10～60 weight parts, make treatment solution (coating liquid), this treatment solution is coated in the surface of matrix steel plate (steel sheet), forms through the sintering circuit of being undertaken by usual method.
This electro-magnetic steel plate chromate overlay film nearly all becomes trivalent chromium during as steel sheet product, thereby does not have the problem of hazardous property.But, owing to must use deleterious sexavalent chrome in the stage of coating liquid, thereby, not only require enriching of equipment in order to ensure the good working environment, also require to observe strict processing standard.
In view of this present situation, and and then in view of the raising of recent Environmental awareness, in the field of electro-magnetic steel plate, demander requires to have the product of the insulating coating that does not contain Cr.
As with beyond the chromic acid as the technology of host, disclose the half organic insulating coating of mineral colloids such as silicon-dioxide as host morely.So, do not need to carry out the processing of deleterious sexavalence chrome liquor, thereby can on environment, use highly beneficially.For example, in Japanese kokai publication hei 10-34812 communique,, disclose Cl, S in resin/silicon-dioxide overlay film are measured the method that is made as below the specified amount as the method for the erosion resistance that improves the mineral colloid class.According to this method, the erosion resistance of product steel plate improves in moistening testing circumstance.But, as the erosion resistance under the harsh condition such as brine spray, not as good as the erosion resistance of using when containing the Cr insulating coating.And, same about stampability under the situation that cooperates silicon-dioxide with erosion resistance, the good stampability when containing the Cr insulating coating not as good as use.
Summary of the invention
The present invention In view of the foregoing, its purpose is to provide a kind of electro-magnetic steel plate and manufacture method thereof, even with the inorganics that does not contain Cr is that the insulating coating of principal constituent also has and contains the equal above performance of Cr insulating coating, has the good insulating coating of erosion resistance and stampability.
The inventor has carried out research with keen determination in order to address the above problem.Its result obtains following opinion.
Even the contriver is to the reduction Cl by proposed in the past
-, SO
4 2-Can not substantially improve the erosion resistance of silica-based chromate-free overlay film product plate and inconsistent reason has been carried out various researchs according to creating conditions different Deng impurity.
Its result finds out that crackle appears in the most applications of corrosion-resistant in overlay film.Promptly, colloidal silicon-dioxide is in about 200～300 ℃ sintering temperature, because silicon-dioxide does not form three-dimensional network (mesh configuration), thereby in silicon-dioxide itself, do not make film, infer that this is crackle, erosion resistance to occur because of the inconsistent reason of creating conditions in overlay film.
To sum up, in order to form the good overlay film of erosion resistance, find the importantly three-dimensional network of formations-Si-O-, can construct, make that this polysiloxane and organism are crosslinked deals with problems, thereby finished the present invention by in resin, having polysiloxane.
The present invention makes according to above discovery, and its main idea is as follows:
(1) a kind of electro-magnetic steel plate with insulating coating is characterized in that, described insulating coating comprises by polysiloxane and the compound resin with polymer formation of C element.
(2) in above-mentioned (1) described electro-magnetic steel plate with insulating coating, it is characterized in that above-mentioned polysiloxane is scaled SiO with respect to the ratio of all solids composition in the above-mentioned insulating coating
2The time be 10 quality % above, below the 90 quality %.
(3) in above-mentioned (1) or (2) described electro-magnetic steel plate with insulating coating, it is characterized in that, the polymkeric substance of the above-mentioned C of having element be selected from the group of forming by polyvinyls, polyester polymer, alcohol acids polymkeric substance, polyurethane polymer, acrylic polymers, styrenic polymer, polyethylene based polymers, polypropylene based polymers, polyamide polymers, polycarbonate polymer, phenolic polymkeric substance, epoxide polymer more than a kind.
(4) in the described electro-magnetic steel plate with insulating coating of each in above-mentioned (1) to (3), it is characterized in that, above-mentioned insulating coating, so as mineral compound contain be selected from silicon-dioxide, silicate, aluminum oxide, titanium dioxide, stannic oxide, cerium oxide, weisspiessglanz, Tungsten oxide 99.999, the molybdenum oxide more than a kind.
(5) in the described electro-magnetic steel plate with insulating coating of each in above-mentioned (1) to (4), it is characterized in that the coating amount of above-mentioned insulating coating is 0.05g/m
2More than, 10g/m
2Below.
(6) a kind of manufacture method with electro-magnetic steel plate of insulating coating is characterized in that, comprising: the coating liquid that will contain polysiloxane and have a polymkeric substance of C element is coated to the step on electro-magnetic steel plate surface; With the step of on the electro-magnetic steel plate of the above-mentioned coating liquid of coating, implementing sintering processes.
(7) in the manufacture method of above-mentioned (6) described electro-magnetic steel plate with insulating coating, it is characterized in that, as above-mentioned polymkeric substance with C element, utilize be selected from polyvinyls, polyester polymer, alcohol acids polymkeric substance, polyurethane polymer, acrylic polymers, styrenic polymer, polyethylene based polymers, polypropylene based polymers, polyamide polymers, polycarbonate polymer, phenolic polymkeric substance, the epoxide polymer more than a kind.
(8) in the manufacture method of above-mentioned (6) or (7) described electro-magnetic steel plate with insulating coating, it is characterized in that, above-mentioned coating liquid, so as mineral compound contain be selected from silicon-dioxide, silicate, aluminum oxide, titanium dioxide, stannic oxide, cerium oxide, weisspiessglanz, Tungsten oxide 99.999, the molybdenum oxide more than a kind.
(9) in the manufacture method of the described electro-magnetic steel plate with insulating coating of each in above-mentioned (6) to (8), it is characterized in that polysiloxane is scaled SiO with respect to the ratio of all solids composition in the above-mentioned coating liquid
2The time be 10 quality % above, below the 90 quality %.
(10) in the manufacture method of the described electro-magnetic steel plate with insulating coating of each in above-mentioned (6) to (9), it is characterized in that the coating amount that makes above-mentioned insulating coating is 0.05g/m
2More than, 10g/m
2Apply liquid and carry out sintering in the electro-magnetic steel plate surface applied followingly.
Embodiment
Below, the present invention is described in detail.
Electro-magnetic steel plate of the present invention is the steel plate with insulating coating, and above-mentioned insulating coating comprises by polysiloxane and the compound resin with polymer formation of C element.This is most important key element in the present invention.By having this insulating coating, have with have the electro-magnetic steel plate that contains the Cr insulating coating equal above, erosion resistance and stampability.
(electro-magnetic steel plate)
At first, the electro-magnetic steel plate that uses is in the present invention described.
Electro-magnetic steel plate (being called electric iron plate again) before the formation overlay film that can use in the present invention, at least the steel plate of adjusting than resistance (iron plate) can be the steel plate of any composition, is not particularly limited so long as in order to obtain desirable magnetic properties (for example hanging down iron loss etc.).Particularly, be preferably applied to especially to contain Si monomer or Si+Al be about 0.1～10.0 quality, W
15/50Among≤about 5.0W/Kg～senior electro-magnetic steel plate.
Form the surface of the electro-magnetic steel plate of insulating coating, can be implement based on alkali skimming treatment, based on the cleanup acid treatment of hydrochloric acid, sulfuric acid, phosphoric acid etc., emphasize to handle, the surface of pre-treatment arbitrarily such as refinement magnetic domain processing, also can be directly to make untreated surface, back.
And,, also can form as required though needn't leave no choice but between insulating coating and steel substrate surface, form the 3rd layer.For example, the oxidation overlay film of base steel metal is formed between insulating coating and the steel substrate surface sometimes in common manufacture method, also can omit the time, the labour that remove this oxidation overlay film.And, generate the forsterite overlay film according to manufacture method, also can omit the time, the labour that remove this overlay film.
(insulating coating)
Then the insulating coating of the present invention to the surface that is coated in above-mentioned steel plate describes.
Insulating coating of the present invention can obtain as described below: will be coated on the electro-magnetic steel plate surface as coating liquid must composition, that contain polysiloxane and have a polymkeric substance of C element described below, and carry out sintering then.
Polysiloxane
Polysiloxane is to have at main chain-polymkeric substance of Si-O-(siloxane bond).Preferably, this polysiloxane, between the polymkeric substance with C element and-the C-Si-O-key and/or-the C-O-Si-O-key, make it crosslinked in advance.Here " make its crosslinked " is meant by geometry mode or chemical mode key etc., makes to form so-called mixture structure.Thus, inorganic components and organic composition form three-dimensional structure, thereby can stably reach the uniform overlay film that does not have crackle, can form the overlay film with good anti-corrosion.
And, when giving functional group such as polysiloxane hydroxyl, alkoxyl group, can and then combine and three-dimensional network is strengthened with polymer moieties with C element.
Polysiloxane in the insulating coating is scaled SiO with respect to the ratio of all solids composition (be sintering after whole overlay film amounts)
2In time, be preferably more than the 10 quality %, below the 90 quality %.Because the remaining ratio of eliminating after the strain annealing of overlay film is less, thereby there is the situation of cohesiveness variation during less than 10 quality %.Overlay film became firmly when this ratio became big, but when surpassing 90 quality %, there is the situation because of the erosion resistance variation of creating conditions in flexible (flexibility) deficiency.In addition, because the polysiloxane of eliminating after the strain annealing increases (more than 50%) with respect to the ratio of whole overlay film amounts significantly because of the decomposition of organic composition, thereby need not to be above-mentioned suitable scope.
In addition, the mensuration about the polysiloxane amount " is scaled SiO
2Amount ", be meant that the Si that supposition contains all forms SiO
2, calculate SiO
2Content.For example, under the situation of only measuring the Si amount, be scaled " SiO
2" amount and as getting final product with respect to the ratio of overlay film all solids composition.
About the polymerization degree of polysiloxane, in the time can obtaining applying the scope of liquid, can use with no particular problem, but average out to more than 10 preferably.
The polymkeric substance that contains the C element
In the present invention, as polymkeric substance, can use various polymkeric substance with C element.For example, can enumerate polyvinyls, polyester polymer, alcohol acids polymkeric substance, polyurethane polymer, acrylic polymers, polystyrene base polymer, polyethylene based polymers, polypropylene based polymers, polyamide polymers, polycarbonate polymer, phenolic polymkeric substance, epoxide polymer etc., preferably contain wherein more than a kind or 2 kinds.And, described polymkeric substance can also as they copolymer and use.
Wherein, between polysiloxane and-the C-Si-O-key and/or-the C-O-Si-O-key forms crosslinkedly, the viewpoint that forms three-dimensional network is set out, also can have can be in the side chain bonded functional group of polymkeric substance.The polymerization degree owing to can use with no particular problem, thereby does not have special stipulation in the time can obtaining applying the scope of liquid, but average out to more than 2 preferably, and then average out to more than 5 preferably.
In addition, the polymer phase with C element in the insulating coating is preferably polysiloxane ratio (the above-mentioned SiO of being scaled for the ratio of all solids composition
2Value) more than 0.1 times.
Can obtain characteristic by above the present invention, but contain the thing, in the scope of not destroying action effect of the present invention, can contain additive, following other mineral compound, organic compound with the purpose of the following stated except above-mentioned as purpose.In addition, when containing following additives, other mineral compound, organic compound, because overlay film degradation when excessively cooperating in large quantities, thereby preferably, with the total amount of additive, other mineral compound and organic compound, be below about 70 quality % with respect to whole overlay film amounts of insulating coating of the present invention.And then preferably below 50 quality %.And, also can be below 30 quality %.
Additive
As additive, can add known linking agent, tensio-active agent, rust-preventive agent, lubricant etc.Addition is the following degree of 30 quality % with respect to overlay film all solids composition preferably.
Other mineral compound, organic compound
Insulating coating of the present invention can contain other mineral compound and/or organic compound in the degree of not destroying effect of the present invention.
For example liquid stabilising can be guaranteed, other oxide compounds (colloidal sol) can be added.Can enumerate silicon-dioxide (colloidal sol) (silicon-dioxide or silicon dioxide gel, below identical), silicate, aluminum oxide (colloidal sol), titanium dioxide (colloidal sol), stannic oxide (colloidal sol), cerium oxide (colloidal sol), weisspiessglanz (colloidal sol), Tungsten oxide 99.999 (colloidal sol), molybdenum oxide (colloidal sol) as oxide compound (colloidal sol).
Particularly under the situation of lower polysiloxane ratio, the interpolation of mineral compound improves the tack of annealed sheet steel, erosion resistance, cohesiveness, thereby is fit to.
Mineral compound preferably contains below the 70 quality % with respect to overlay film all solids composition and then below the preferred 50 quality %.Also can be below the 60 quality % or below the 40 quality %.And, also can contain more than the preferred 5 quality %, and then more than the preferred 10 quality %.
In addition, the present invention will not add chromium cpd and obtains good film covering characteristics as purpose.Therefore, insulating coating of the present invention is from manufacturing process and prevent viewpoint from the environmental pollution of product, does not preferably contain Cr in fact.The chromium amount that allows as impurity, preferably all solids composition quality (all overlay film amounts) with respect to insulating coating is scaled CrO
3Amount below 0.1 quality %.
(manufacture method)
Then the manufacture method with electro-magnetic steel plate of insulating coating of the present invention is described.
The pre-treatment of the electro-magnetic steel plate that uses as starting material of the present invention does not have special stipulation.Can preferably use and be untreated or cleanup acid treatment such as skimming treatment, hydrochloric acid, sulfuric acid, phosphoric acid such as alkali.
And coating contains polysiloxane and the coating liquid with polymkeric substance of C element on this steel plate.Then, on electro-magnetic steel plate, form insulating coating by on the electro-magnetic steel plate of the above-mentioned coating liquid of coating, implementing sintering processes.
At this moment, above-mentioned coating liquid is scaled SiO with respect to the polysiloxane ratio of all solids composition
2Be preferably 10～90 quality %.As mentioned above, because the remaining ratio of eliminating after the strain annealing of overlay film is less, thereby there is the situation of cohesiveness variation during less than 10 quality %, overlay film became firm when this ratio became big, but when surpassing 90 quality %, there is the situation because of the erosion resistance variation of creating conditions in flexible deficiency.
The present invention is as the three-dimensional mesh configuration of the overlay film of purpose, can reach by above-mentioned processing, but in order more closely to form this mesh configuration more reliably, preferably in above-mentioned coating liquid, make polysiloxane and crosslinked polymer in advance, and also can strengthen three-dimensional mesh configuration by adding linking agent with C element.And, also effective when using polysiloxane with functional groups such as hydroxyl, alkoxyl groups.
The overlay film raw material of coating is preferably water-based or butyrous, pasty state or aqueous, increases viewpoint more than necessary from preventing to make overlay film thickness (overlay film adhesion amount), preferably with aqueous as the basis of water or organic solvent.In the following description, when being called treatment solution, also comprise pasty state as principle.
The coating method of insulating coating can use generally in industrial be used, the method for using various devices such as roll coating machine, showering curtain type coating machine, spraying machine, scraper coating machine and scraper coating machine.
And, can be hot air type, infrared heating formula, induction heating type as common enforcement etc. about sintering method.Sintering temperature is that common rank is just passable, but in order to prevent the thermolysis of resin, preferably below 350 ℃.And then preferred range is more than 150 ℃, below 300 ℃.
(insulating coating adhesion amount)
The coating amount of insulating coating is not particularly limited, and being preferably each single face is 0.05g/m
2More than, 10g/m
2Below.And then preferably, each single face amounts to 0.1g/m
2More than, 10g/m
2Below.Not enough 0.05g/m
2The time, be difficult to apply uniformly by industrial method, exist to be difficult to guarantee stable stampability, the situation of erosion resistance.On the other hand, surpass 10g/m
2The time overlay film performance can not improve more than it, existing becomes uneconomic possibility.In addition, the mensuration of coating amount is carried out the steel plate of after the sintering processes and implementing to eliminate strain annealing, can utilize by thermokalite etc. and only make the overlay film fusion, the weighting method of the weight change determination before and after the fusion.
Be preferably about 0.01g/m as the coating amount after the elimination strain annealing
2More than, 9.0g/m
2Below.
And insulating coating of the present invention but also can be according to purpose only on single face preferably on steel plate two-sided.That is, can only implement at single face according to purpose, another side is not implemented insulating coating as other insulating coatings on another side.
(utilizing mode)
Purposes to electro-magnetic steel plate of the present invention, as to have insulating coating is not particularly limited, and on the stable on heating meaning of performance overlay film, what be fit to is to be used for about 750～850 ℃ of purposes of eliminating strain annealing.For example, after being particularly suitable for electro-magnetic steel plate carried out punching press, eliminates strain annealing, stacked and obtain the purposes of laminated core.
(embodiment 1)
Below, specify effect of the present invention according to embodiment, the invention is not restricted to these embodiment.
At first, use the following electro-magnetic steel plate of handling fully as electro-magnetic steel plate: contain Si:0.45 quality %, Mn:0.25 quality %, Al:0.48 quality % as composition of steel, implementing thickness of slab is the final annealing of 0.5mm thickness.Make polysiloxane and the crosslinked in advance compound resin of each resin in order to the condition shown in the table 1,3,5, be coated to the surface of above-mentioned electro-magnetic steel plate with the roll coating machine, with hotblast stove with sintering temperature: arrive 230 ℃ of sintering of steel billet temperature and obtain sample.Wherein, with respect to a part of embodiment, comparative example,, added the medicament of record in the table 1,3,5 as the composition beyond the compound resin.
With respect to the sample that obtains (electro-magnetic steel plate) with insulating coating, overlay film is fused in the ebullient 50%NaOH aqueous solution, by above-mentioned gravimetric determination the coating amount of insulating coating.
And,, carry out the mensuration of following each film covering characteristics, and estimate with respect to the above electro-magnetic steel plate that obtains with insulating coating.
(erosion resistance-product steel plate 1)
Sample is carried out moistening test (50 ℃,＞98%RH (relative humidity)), by estimate the iron rust incidence after 48 hours based on the area occupation ratio of range estimation.
(judging criterion)
A: iron rust area occupation ratio 0%～less than 20%
B: the iron rust area occupation ratio is more than 20%～less than 40%
C: the iron rust area occupation ratio is more than 40%～less than 60%
D: the iron rust area occupation ratio is more than 60%～and 100%
(erosion resistance-product steel plate 2)
Sample is carried out the salt spray testing (35 ℃) that JIS stipulates, by the iron rust incidence of area occupation ratio evaluation after 5 hours based on range estimation.
(judging criterion)
A: iron rust area occupation ratio 0%～less than 25%
B: the iron rust area occupation ratio is more than 25%～less than 50%
C: the iron rust area occupation ratio is more than 50%～less than 75%
D: the iron rust area occupation ratio is more than 75%～and 100%
(erosion resistance (erosion resistance-annealed sheet steel) after the elimination strain annealing)
To sample, under nitrogen atmosphere, anneal with 750 ℃ * 2 hours condition, the annealed sheet steel that obtains is carried out constant temperature and humid test (50 ℃, relative humidity 80%), by the iron rust incidence of area occupation ratio evaluation after 14 days based on range estimation.
(judging criterion)
A: iron rust area occupation ratio 0%～less than 20%
B: the iron rust area occupation ratio is more than 20%～less than 40%
C: the iron rust area occupation ratio is more than 40%～less than 60%
D: the iron rust area occupation ratio is more than 60%～and 100%
(tack)
(i) sample and
(ii) under nitrogen atmosphere, anneal and the annealed sheet steel that obtains with 750 ℃ * 2 hours condition, carry out 180 ° of replications tests of 20mm φ, by peeling off rate evaluation based on the overlay film of range estimation.
(judging criterion)
A: do not peel off
B :～rate less than 20% peeled off
C: the rate of peeling off is more than 20%～less than 40%
D: the rate of peeling off is more than 40%～all peels off
(solvent resistance)
Make all kinds of SOLVENTS (hexane, dimethylbenzene, methyl alcohol, ethanol) infiltrate absorbent cotton, make surperficial reciprocal 5 times of sample, by the appearance change after the range estimation investigation.
(judging criterion)
A: do not change
B: almost do not change
C: variable color a little
D: change big
(stampability)
To sample, utilize 180 ° of punching blocks of 15mm φ to carry out punching press, so that burr height reaches 50 μ m, estimate by this punching press number.
(judging criterion)
A:100 is more than ten thousand times
B:50 is more than ten thousand times～less than 1,000,000 times
C:10 is more than ten thousand times～less than 500,000 times
D: less than 100,000 times
(cohesiveness)
Square sample and applied load (200g/cm that overlapping 10 length of sides are 50mm
2) time anneals with 750 ℃ * 2 hours condition under nitrogen atmosphere.Then, the 500g counterweight is dropped on the sample (steel plate), the height of drop when investigation is cut apart 5 parts.
(judging criterion)
Below the A:10cm
B: surpass below 10cm～15cm
C: surpass below 15cm～30cm
D: surpass 30cm
The result who more than obtains is illustrated in table 2,4,6.
Table 1
Table 2
Table 3
Table 4
Table 5
* make the multipolymer of two resin copolymerizations
Table 6
From table 1 to table 6 as can be known, the erosion resistance of example of the present invention, tack, solvent resistance, stampability, cohesiveness are all good.Particularly as can be known, in of the present invention example of coating amount in suitable scope of polysiloxane ratio and insulating coating, above-mentioned characteristic is further good.And, under the lower situation of polysiloxane ratio, particularly can improve various characteristics by adding mineral compound.
On the other hand, in comparative example, any in erosion resistance, tack, solvent resistance, stampability, the cohesiveness is above relatively poor.
Industrial applicibility
According to the present invention, can obtain having the electricity of the good insulating coating of corrosion resistance and stampability Magnetic steel plate. And, the electromagnetic steel plate with insulating coating of the present invention, except not containing chromium, Headed by corrosion resistance, stampability, various performances are more than the insulating coating that contains Cr is equal. Cause This, the present invention is not only final products, and is also good to environment in manufacturing process, can be wide Be used in useful invention on the industry of the occasion headed by the purposes such as motor, transformer generally.
Claims (12)
1. electro-magnetic steel plate with insulating coating, wherein,
Described insulating coating comprise by
Polysiloxane and
Polymkeric substance with C element
The compound resin that forms.
2. the electro-magnetic steel plate with insulating coating as claimed in claim 1, wherein, described polysiloxane is scaled SiO with respect to the ratio of all solids composition in the described insulating coating
2The time be 10 quality % above, below the 90 quality %.
3. the electro-magnetic steel plate with insulating coating as claimed in claim 1 or 2, wherein, the polymkeric substance of the described C of having element be selected from the group of forming by polyvinyls, polyester polymer, alcohol acids polymkeric substance, polyurethane polymer, acrylic polymers, styrenic polymer, polyethylene based polymers, polypropylene based polymers, polyamide polymers, polycarbonate polymer, phenolic polymkeric substance, epoxide polymer more than a kind.
4. the electro-magnetic steel plate with insulating coating as claimed in claim 1 or 2, wherein, described insulating coating, so as mineral compound contain be selected from silicon-dioxide, silicate, aluminum oxide, titanium dioxide, stannic oxide, cerium oxide, weisspiessglanz, Tungsten oxide 99.999, the molybdenum oxide more than a kind.
5. the electro-magnetic steel plate with insulating coating as claimed in claim 3, wherein, described insulating coating, so as mineral compound contain be selected from silicon-dioxide, silicate, aluminum oxide, titanium dioxide, stannic oxide, cerium oxide, weisspiessglanz, Tungsten oxide 99.999, the molybdenum oxide more than a kind.
6. the electro-magnetic steel plate with insulating coating as claimed in claim 1 or 2, wherein, the coating amount of described insulating coating is 0.05g/m
2More than, 10g/m
2Below.
7. manufacture method with electro-magnetic steel plate of insulating coating wherein, comprising:
The coating liquid that will contain polysiloxane and have a polymkeric substance of C element is coated to the step on electro-magnetic steel plate surface; With
On the electro-magnetic steel plate of the described coating liquid of coating, implement the step of sintering processes.
8. the manufacture method with electro-magnetic steel plate of insulating coating as claimed in claim 7, wherein, as described polymkeric substance with C element, use be selected from polyvinyls, polyester polymer, alcohol acids polymkeric substance, polyurethane polymer, acrylic polymers, styrenic polymer, polyethylene based polymers, polypropylene based polymers, polyamide polymers, polycarbonate polymer, phenolic polymkeric substance, the epoxide polymer more than a kind.
9. as claim 7 or 8 described manufacture method with electro-magnetic steel plate of insulating coating, wherein, described coating liquid, so as mineral compound contain be selected from silicon-dioxide, silicate, aluminum oxide, titanium dioxide, stannic oxide, cerium oxide, weisspiessglanz, Tungsten oxide 99.999, the molybdenum oxide more than a kind.
10. as claim 7 or 8 described manufacture method with electro-magnetic steel plate of insulating coating, wherein, described polysiloxane is scaled SiO with respect to the ratio of all solids composition in the described coating liquid
2The time be 10 quality % above, below the 90 quality %.
11. the manufacture method with electro-magnetic steel plate of insulating coating as claimed in claim 9, wherein, described polysiloxane is scaled SiO with respect to the ratio of all solids composition in the described coating liquid
2The time be 10 quality % above, below the 90 quality %.
12. as claim 7 or 8 described manufacture method with electro-magnetic steel plate of insulating coating, wherein, the coating amount that makes described insulating coating is 0.05g/m
2More than, 10g/m
2Apply liquid and carry out sintering in the electro-magnetic steel plate surface applied followingly.
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| CN103087627B (en) * | 2012-12-18 | 2016-01-06 | 芜湖恒坤汽车部件有限公司 | A kind of metal aluminum alloy silane surface treatment agent and preparation method thereof |
| EP3040444A4 (en) * | 2013-08-28 | 2016-10-12 | Jfe Steel Corp | Electromagnetic steel sheet with insulating coating film, method for producing same, and coating agent for forming insulating coating film |
| KR101796234B1 (en) | 2015-12-22 | 2017-11-09 | 주식회사 포스코 | Insulation coating composite for oriented electrical steel steet, forming method of insulation coating using the same, and oriented electrical steel steet |
| CN110216945A (en) * | 2019-06-06 | 2019-09-10 | 扬州市顺腾不锈钢照明器材有限公司 | A kind of electromagnetic steel plate of high-insulativity |
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| CN1195019C (en) * | 2003-07-04 | 2005-03-30 | 山东大学 | Isocyanate cross-linked high-temp, vulcanized silicone rubber and its preparation method |
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