CN111029079A - Composite finished product powder and preparation method thereof - Google Patents
Composite finished product powder and preparation method thereof Download PDFInfo
- Publication number
- CN111029079A CN111029079A CN202010047706.9A CN202010047706A CN111029079A CN 111029079 A CN111029079 A CN 111029079A CN 202010047706 A CN202010047706 A CN 202010047706A CN 111029079 A CN111029079 A CN 111029079A
- Authority
- CN
- China
- Prior art keywords
- powder
- amorphous nanocrystalline
- composite
- meshes
- amorphous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15383—Applying coatings thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/052—Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15341—Preparation processes therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15341—Preparation processes therefor
- H01F1/1535—Preparation processes therefor by powder metallurgy, e.g. spark erosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15358—Making agglomerates therefrom, e.g. by pressing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The composite finished product powder provided by the invention comprises composite alloy powder, wherein the composite alloy powder comprises flaky first amorphous nanocrystalline powder and spherical second amorphous nanocrystalline powder, and the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder are uniformly mixed; the surface of the composite alloy powder is coated with an insulating coating layer; also provides a preparation method of the composite finished product powder. The composite finished powder effectively improves the fluidity and the molding density of the powder by applying the composite alloy powder mixed with amorphous nanocrystalline powder with different types of appearance types, thereby improving the direct current bias capability of the magnetic powder core prepared by applying the composite alloy powder.
Description
Technical Field
The invention relates to the technical field of magnetically soft alloy metallurgy, in particular to composite finished product powder and a preparation method thereof.
Background
The amorphous nanocrystalline material has high saturation magnetic induction, high magnetic conductivity, low coercive force, low high-frequency loss, good strong hardness, wear resistance, corrosion resistance, good temperature and environmental stability and the like, has excellent comprehensive performance, replaces permalloy, silicon steel and ferrite, is applied to the power electronic technology, shows the characteristics of small volume, high efficiency, energy conservation and the like, and has the optimal cost performance ratio in all metal soft magnetic materials.
In the prior art, the amorphous nanocrystalline alloy can be prepared into powder and then the magnetic powder core is prepared from the powder, and the powder preparation process comprises the step of crushing the amorphous nanocrystalline strip or the step of preparing the powder by a water atomization method.
The insulating coating is a key technology in the preparation process of the magnetic powder core, the performance of the insulating coating is an important factor influencing the high-frequency loss of the magnetic powder core, and if the insulating coating is incomplete or damaged, the eddy current loss among magnetic powder particles is increased sharply, so that the high-frequency loss of the magnetic powder core is increased.
Disclosure of Invention
The present invention is directed to overcoming the disadvantages of the prior art and providing a method for manufacturing an electromagnetic shielding sheet.
The composite finished product powder comprises composite alloy powder, wherein the composite alloy powder comprises flaky first amorphous nanocrystalline powder and spherical second amorphous nanocrystalline powder, and the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder are uniformly mixed; the surface of the composite alloy powder is coated with an insulating coating layer.
Furthermore, the mesh range of the first amorphous nanocrystalline powder is-100 to +270 meshes, and the mesh range of the second amorphous nanocrystalline powder is-200 to +400 meshes.
Further, the powder ratio of the first amorphous nanocrystalline powder is as follows: the powder ratio of the first amorphous nanocrystalline powder is as follows: 10-30% of-100 meshes to +150 meshes, 20-50% of-150 meshes to +200 meshes, and 10-30% of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder accounts for 10-40%.
Further, the powder material of the first amorphous nanocrystalline powder and/or the second amorphous nanocrystalline powder is a FeSiB amorphous nanocrystalline alloy or a FeSiBCuNb amorphous nanocrystalline alloy.
Further, the powder material adopted by the first amorphous nanocrystalline powder and/or the second amorphous nanocrystalline powder is Fe78Si9B13。
The preparation method of the composite finished product powder comprises the following steps:
s1, selecting an amorphous nanocrystalline strip to mechanically crush the amorphous nanocrystalline strip to obtain first amorphous nanocrystalline powder;
s2, selecting amorphous nanocrystalline alloy to carry out water atomization treatment, and obtaining second amorphous nanocrystalline powder;
s3, proportionally mixing the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder to obtain composite alloy powder;
s4, carrying out insulation coating treatment on the obtained composite alloy powder to obtain coated powder;
and S5, adding the lubricant into the obtained coating powder, and stirring and mixing the coating powder by a stirrer to obtain composite finished product powder.
Further, in step S4, a first insulation coating method is applied to perform the insulation coating process, the first insulation coating method includes the following steps:
s4-01, mixing and attaching inorganic powder to the composite alloy powder by ultrasonic waves to obtain attached powder;
and S4-02, mixing and fully reacting the alkaline solution with the attached powder, and drying to form an insulating coating layer on the surface of the attached powder, thereby obtaining the coated powder.
Further, the first and/or second amorphous nanocrystalline powder contains Fe and/or Si; in step S4, a second insulation coating method is applied to perform insulation coating treatment, the second insulation coating method includes the following steps:
s4-11, preheating and heating a rotary furnace to 240-450 ℃, and adding the composite alloy powder into the rotary furnace;
and S4-12, continuously introducing oxygen-containing air into the rotary furnace, turning the composite alloy powder in the rotary furnace, and fully reacting the surface of the composite alloy powder with the oxygen-containing air to form an insulating coating layer on the surface of the composite alloy powder to obtain the coated powder.
Further, in step S4, a third insulation coating method is applied to perform the insulation coating process, and the third insulation coating method includes the following steps:
and S4-31, adding the composite alloy powder by using a cohesive inorganic substance, and uniformly mixing to form an insulating coating layer on the surface of the composite alloy powder so as to obtain the coated powder.
The invention has the beneficial effects that:
the composite finished powder effectively improves the fluidity and the molding density of the powder by applying the composite alloy powder mixed with amorphous nanocrystalline powder with different types of appearance types, thereby improving the direct current bias capability of the magnetic powder core prepared by applying the composite alloy powder.
Detailed Description
In order to make the technical solution, objects and advantages of the present invention more apparent, the present invention will be further explained with reference to the following embodiments.
The composite alloy powder comprises a first amorphous nanocrystalline powder in a sheet shape and a second amorphous nanocrystalline powder in a sphere-like shape, and the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder are uniformly mixed, so that the preparation method can comprise the following steps:
s1, selecting an amorphous nanocrystalline strip to mechanically crush the amorphous nanocrystalline strip to obtain first amorphous nanocrystalline powder;
s2, selecting amorphous nanocrystalline alloy to carry out water atomization treatment, and obtaining second amorphous nanocrystalline powder;
s3, proportionally mixing the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder to obtain composite alloy powder.
Specifically, in step S3, the first amorphous nanocrystal powder and the second amorphous nanocrystal powder are mixed according to the following ratio:
the mesh range of the first amorphous nanocrystalline powder is-100 to +270 meshes, and the mesh range of the second amorphous nanocrystalline powder is-200 to +400 meshes. 10-30% of-100 meshes to +150 meshes, 20-50% of-150 meshes to +200 meshes, and 10-30% of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder accounts for 10-40%. The composite alloy powder with good fluidity is obtained by adjusting the proportion and mixing configuration of the composite alloy powder with different mesh numbers, and the main parameters of good powder fluidity are as follows: bulk density, tap density, angle of repose, degree of dispersion, etc.; the comprehensive index is a fluidity index which can be tested by using a Dandongbaote powder characteristic analyzer; the fluidity index is above 70 and is a good grade, and the larger the fluidity index is, the better the fluidity is; the powder with good fluidity has smaller resistance among powder particles in the molding process, thereby being beneficial to molding; under the same pressure condition, the magnetic powder core prepared by the method has higher density and better product performance.
Based on the application of a typical iron-based amorphous alloy, the powder material of the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder is preferably FeSiB amorphous nanocrystalline alloy, and the component Fe is preferably selected78Si9B13(ii) a Or based on the application of typical iron-based nanocrystalline alloy, the powder material of the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder is preferably FeSiBCuNb amorphous nanocrystallineAlloying; the amorphous nanocrystalline alloy is prepared by putting raw materials such as industrial pure iron, iron boron alloy, industrial silicon and the like with proper weight into a smelting furnace for smelting.
And based on the composite alloy powder obtained by preparation, a composite finished product powder can be prepared by coating the surface of the composite alloy powder with an insulating coating layer, and the preparation method of the composite finished product powder also comprises the following steps:
s4, carrying out insulation coating treatment on the obtained composite alloy powder to obtain coated powder;
and S5, adding the lubricant into the coated powder, and stirring and mixing the coated powder by a stirrer to obtain a composite finished product powder.
Example 1:
in step S4, a first insulation coating method is applied to perform the insulation coating process, the first insulation coating method includes the following steps:
s4-01, mixing and attaching inorganic powder to the composite alloy powder by ultrasonic waves to obtain attached powder;
and S4-02, mixing and fully reacting the alkaline solution with the attached powder, and drying to form an insulating coating layer on the surface of the attached powder, thereby obtaining the coated powder.
The inorganic powder is SiO2Or Fe2O3And the like inorganic oxides; the mesh number of the inorganic powder is more than 8000 meshes, so that the ultrafine effect is achieved, and the particles of the inorganic powder approach to the nano level.
Specifically, the composite alloy powders of the respective mesh numbers are mixed and uniformly mixed by a V-shaped mixer, and the V-shaped mixer is used for outputting ultrasonic waves by an ultrasonic vibrator in the mixing and stirring process of the composite alloy powders, so that the inorganic powders are uniformly adhered to the composite alloy powders by the certain adsorption capacity of the ultrafine inorganic powders, thereby obtaining the adhered powders.
Mixing and fully reacting alkali solution with the attached powder, wherein the alkali solutionThe solution can be selected from NaOH solution, and the reaction process is carried out according to the chemical reaction formula: SiO 22+2NaOH＝Na2SiO3+H2O, stirring uniformly and fully reacting under the condition of normal temperature; adding a binder into the attached powder which is fully reacted with the alkali solution to stir until the powder is uniformly dried, so that Na-carrying particles are formed on the surface of the attached powder2SiO3To obtain coated powder.
The binder is a cohesive inorganic or organic binder; the adhesive is silicon resin, water glass or epoxy resin, and the addition amount of the adhesive is 0.2-2.5%.
The addition amount of the inorganic powder can be increased according to the performance requirement according to the content required by forming a single-layer insulating coating layer; the thickness of the attached insulating coating layer approaches to a single layer and approaches to complete attachment.
Example 2:
fe containing Fe and Si is applied based on the first and/or second amorphous nanocrystalline powder78Si9B13(ii) a In step S4, a second insulation coating method is applied to perform insulation coating treatment, the second insulation coating method includes the following steps:
s4-11, preheating and heating a rotary furnace to 240-450 ℃, and adding the composite alloy powder into the rotary furnace;
and S4-12, continuously introducing oxygen-containing air into the rotary furnace, turning the composite alloy powder in the rotary furnace, and fully reacting the surface of the composite alloy powder with the oxygen-containing air to form an insulating coating layer on the surface of the composite alloy powder to obtain the coated powder.
Specifically, the obtained mixed powder is subjected to a baking treatment in a rotary kiln to stress-relieve annealing; the rotary furnace is provided with a corresponding oxygen introducing mechanism and a corresponding turnover mechanism, oxygen-containing air is continuously introduced into the rotary furnace through the oxygen introducing mechanism, the turnover mechanism is used for turning over the mixed powder in the rotary furnace, the surface of the mixed powder is fully reacted with the oxygen-containing air, and the chemical reaction is carried outThe formula relates to the following formula; fe + O2＝Fe2O3And Si + O2＝SiO2Turning and stirring evenly for full reaction; so that an insulating coating layer with corresponding oxide is formed on the surface of the mixed powder to obtain coated powder.
Example 3:
in step S4, a third insulation coating method is applied to perform the insulation coating process, the third insulation coating method includes the following steps:
and S4-31, adding the composite alloy powder by using a cohesive inorganic substance, and uniformly mixing to form an insulating coating layer on the surface of the composite alloy powder so as to obtain the coated powder.
Adding the obtained mixed powder into a double-shaft stirrer, and adding a cohesive inorganic substance to stir until the mixture is uniform, so that an insulating coating layer is formed on the surface of the mixed powder, and coated powder is obtained; the adopted cohesive inorganic matter is a sodium silicate solution or inorganic silicon resin, preferably the sodium silicate solution, the modulus of the sodium silicate solution is preferably 2.5-3.5, the Baume degree is preferably 0.35-0.48, the ratio of the sodium silicate solution is 0.5-3.2%, the sodium silicate solution is diluted by a diluent, the ratio of the diluent is 1.2-6.5%, and the diluent can be selected from but not limited to acetone and ethanol.
In the above examples 1, 2 and 3, the lubricant used includes, but is not limited to, zinc stearate, paraffin wax, barium stearate.
And then based on the above-mentioned compound finished powder, can carry on the preparation of a compound magnetic powder core, then the preparation method of this compound magnetic powder core, based on the preparation method of the above-mentioned compound finished powder, also include the following steps:
and S6, performing pressing treatment, sintering treatment, annealing treatment and curing treatment on the obtained composite finished product powder to obtain the magnetic powder core base block.
And S7, performing surface coating treatment on the magnetic powder core base block to obtain the composite magnetic powder core.
In the step S6, when the alloy component of the composite finished powder is based on the application of typical iron-based amorphous alloy, the annealing temperature is 350-480 ℃, the total annealing time is 1.5-3.5 h, and the heat preservation time is 20-60 min; when the alloy raw material of the sintered magnetic powder core is based on the application of a typical iron-based nanocrystalline alloy, the annealing temperature is 490-580 ℃, the total annealing time is 2-8 h, and the heat preservation time is 60-180 min.
In the step S7, a surface coating treatment method is applied to the magnetic powder core substrate to perform a surface coating treatment on the magnetic powder core substrate, and the surface coating treatment method for the magnetic powder core substrate includes the following steps:
s7-1, performing surface pretreatment on the magnetic powder core base block to form a pretreatment insulating layer on the surface of the magnetic powder core base block;
s7-2, carrying out preheating treatment on the magnetic powder core base block after surface pretreatment, wherein the preheating treatment temperature is 180-240 ℃; then, performing roller coating treatment by using a second insulating material; and adsorbing and melting the second insulating material by self heat of the preheated magnetic powder core base block so as to form a roll coating on the pretreated insulating layer.
The second insulating material is acetal insulating powder, phenolic insulating powder or epoxy insulating powder.
The thickness range of the pre-treatment insulating layer is 20-150 mu m, and preferably 30-80 mu m; the thickness range of the roller coating is 100-400 mu m, and preferably 150-250 mu m.
Example 4:
in step S7-1, the method includes the following steps:
s7-1-01, heating the magnetic powder core base block to a temperature of 150-250 ℃;
s7-1-2, performing electrostatic spraying treatment on the magnetic powder core base block heated and heated by adopting electrostatic spraying equipment and first insulating powder to form the pretreated insulating layer on the surface of the magnetic powder core base block; the first insulating powder is acetal insulating powder, phenolic insulating powder or epoxy insulating powder.
Example 5:
in step S7-1, the method includes the following steps:
s7-1-11, performing spraying treatment on the magnetic powder core base block by a liquid spray gun with first insulating paint; the first insulating paint is acetal insulating paint or phenolic insulating paint or epoxy insulating paint;
s7-1-12, baking and heating the magnetic powder core base block after spraying treatment, wherein the baking and heating temperature is 100-150 ℃; so that the surface of the magnetic powder core base block is formed with the pretreatment insulating layer.
Specifically, the application principle of the magnetic powder core base block surface coating treatment method is as follows:
firstly, performing surface pretreatment on the magnetic powder core base block by using first insulating powder or first insulating paint to prepare a thin insulating pretreatment insulating layer on the surface of the rough magnetic powder core base block, so as to improve the insulating property of the magnetic powder core base block and compensate the surface defects (such as residual holes) of the magnetic powder core base block to a certain extent; and then the magnetic powder core base block is subjected to roller coating treatment by using a second insulating material. Based on the premise that the magnetic powder core base block is preheated, the second insulating material in the material box can be adsorbed by the magnetic powder core base block with heat in a roll coating mode to form a roll coating layer.
In the roll coating process, the magnetic powder core base block is in a rolling state in the material box, and the rolling speed of the magnetic powder core base block is controlled through the parameter and process adjustment of roll coating equipment, so that the uniformity of the roll coating formed by the magnetic powder core base block can be effectively controlled; the second insulating materials are intensively placed in a material box, so that the second insulating materials in the roll coating process are intensively arranged without scattering, the roll coating process basically does not consume the second insulating materials additionally, and raw materials are saved.
Compared with the prior art that the insulating coating on the surface of the magnetic powder core base block is processed by directly applying a spraying mode or directly applying a rolling coating mode, the scheme is based on the step-by-step processing application of the double-layer insulating coating, and the thickness and the uniformity of the insulating coating are controlled by adjusting the matching of the parameters of the rolling coating equipment, and the surface quality of the insulating coating is improved.
Example 6:
is prepared byGrouping into Fe78Si9B13The amorphous nanocrystalline alloy of (a); preparing the flaky first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder by using the first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 20 percent of-100 meshes to +150 meshes, 40 percent of-150 meshes to +200 meshes and 15 percent of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of-200 meshes to +400 meshes of 25 percent; the amorphous nanocrystalline powder obtained by proportioning is repeatedly and uniformly mixed to obtain corresponding composite alloy powder, and a corresponding composite magnetic powder core is prepared by the composite alloy powder.
The performance of the detected target product and the performance of the amorphous nanocrystalline powder core prepared by applying the target product in the market are as follows:
example 7:
is prepared with the component composition of Fe78Si8.5B13.5The amorphous nanocrystalline alloy of (a), and thus performing the first amorphous nanocrystalline powder in a sheet form;
is prepared with the component composition of Fe78Si9B13The spherical second amorphous nanocrystalline powder is prepared by the amorphous nanocrystalline alloy;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 20 percent of-100 meshes to +150 meshes, 40 percent of-150 meshes to +200 meshes and 15 percent of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of-200 meshes to +400 meshes of 25 percent; the amorphous nanocrystalline powder obtained by proportioning is repeatedly and uniformly mixed to obtain corresponding composite alloy powder, and a corresponding composite magnetic powder core is prepared by the composite alloy powder.
The performance of the detected target product and the performance of the amorphous nanocrystalline powder core prepared by applying the target product in the market are as follows:
example 8:
is prepared with the component composition of Fe78Si9B13The amorphous nanocrystalline alloy of (a); preparing the flaky first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder by using the first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 30% of-100 meshes to +150 meshes, 40% of-150 meshes to +200 meshes and 10% of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of 20 percent of-200 meshes- +400 meshes; the amorphous nanocrystalline powder obtained by proportioning is repeatedly and uniformly mixed to obtain corresponding composite alloy powder, and a corresponding composite magnetic powder core is prepared by the composite alloy powder.
The performance of the detected target product and the performance of the amorphous nanocrystalline powder core prepared by applying the target product in the market are as follows:
example 9:
is prepared with the component composition of Fe78Si9B13The amorphous nanocrystalline alloy of (a); preparing the flaky first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder by using the first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 25% of-100 meshes to +150 meshes, 35% of-150 meshes to +200 meshes and 25% of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of 15 percent of-200 meshes- +400 meshes; the amorphous nanocrystalline powder obtained by proportioning is repeatedly and uniformly mixed to obtain corresponding composite alloy powder, and a corresponding composite magnetic powder core is prepared by the composite alloy powder.
The performance of the detected target product and the performance of the amorphous nanocrystalline powder core prepared by applying the target product in the market are as follows:
example 10:
is prepared with the component composition of Fe78Si9B13The amorphous nanocrystalline alloy of (a); preparing the flaky first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder by using the first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 20 percent of-100 meshes to +150 meshes, 40 percent of-150 meshes to +200 meshes and 15 percent of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of-200 meshes to +400 meshes of 25 percent; and (3) repeatedly and uniformly mixing the amorphous nanocrystalline powder obtained by proportioning to obtain the corresponding composite alloy powder.
The obtained composite alloy powder was subjected to insulation coating treatment by the second insulation coating method in example 2 described above, and a corresponding composite magnetic powder core was prepared therefrom.
The performance of the detected target product and the performance of the amorphous nanocrystalline powder core prepared by applying the target product in the market are as follows:
example 11:
is prepared with the component composition of Fe78Si9B13The amorphous nanocrystalline alloy of (a); preparing the flaky first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder by using the first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 20 percent of-100 meshes to +150 meshes, 40 percent of-150 meshes to +200 meshes and 15 percent of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of-200 meshes to +400 meshes of 25 percent; and (3) repeatedly and uniformly mixing the amorphous nanocrystalline powder obtained by proportioning to obtain the corresponding composite alloy powder.
The obtained composite alloy powder was subjected to insulation coating treatment by the third insulation coating method in example 3 described above, and a corresponding composite magnetic powder core was prepared therefrom.
The performance of the detected target product and the performance of the amorphous nanocrystalline powder core prepared by applying the target product in the market are as follows:
example 12:
is prepared with the component composition of Fe78Si9B13The amorphous nanocrystalline alloy of (a); preparing the flaky first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder by using the first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 20 percent of-100 meshes to +150 meshes, 40 percent of-150 meshes to +200 meshes and 15 percent of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of-200 meshes to +400 meshes of 25 percent; and (3) repeatedly and uniformly mixing the amorphous nanocrystalline powder obtained by proportioning to obtain the corresponding composite alloy powder.
Adding phosphoric acid acetone solution into the obtained composite alloy powder, and stirring until the mixture is uniformly dried, wherein the phosphoric acid accounts for 0.2 percent and the acetone accounts for 4.0 percent; then adding 0.6% of silicone resin and 4.0% of acetone mixed solution, uniformly mixing and drying to complete the insulation coating treatment, and obtaining coated powder; then 0.6 percent of zinc stearate is added into the coated powder, and the mixture is stirred and mixed evenly to obtain composite finished product powder.
And (3) pressing and molding the composite finished product powder into 27 x 15 x 11 amorphous nanocrystalline magnetic rings, and then annealing the amorphous nanocrystalline magnetic rings, wherein the annealing temperature is 450 ℃ and the annealing time is 40 min.
Soaking the annealed product in an epoxy resin acetone solution for 10min, and drying and curing at 120 ℃; then the solidified product is processed by surface insulating layer, so as to prepare the corresponding composite magnetic powder core.
The performance of the detected target product and the performance of the amorphous nanocrystalline powder core prepared by applying the target product in the market are as follows:
example 13:
is prepared with the component composition of Fe78Si9B13The amorphous nanocrystalline alloy of (a); preparing the flaky first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder by using the first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 20 percent of-100 meshes to +150 meshes, 40 percent of-150 meshes to +200 meshes and 15 percent of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of-200 meshes to +400 meshes of 25 percent; and (3) repeatedly and uniformly mixing the amorphous nanocrystalline powder obtained by proportioning to obtain the corresponding composite alloy powder.
Adding the obtained composite alloy powder into a rotary furnace for oxidation insulation treatment, wherein the temperature of the rotary furnace is 350 ℃, the rotating speed of the furnace body is 20r/min, the oxygen content of introduced air is 23 +/-0.5%, and the powder is turned and baked for 12 hours; then adding a mixed solution of 0.6% of silicone resin and 4.0% of acetone, uniformly mixing and drying to obtain coated powder.
Adding 0.6% of zinc stearate into the coated powder, and uniformly stirring and mixing to obtain composite finished product powder;
pressing and molding the composite finished product powder into 27 × 15 × 11 amorphous nanocrystalline magnetic rings; and annealing the amorphous nanocrystalline magnetic ring, wherein the annealing temperature is 450 ℃ and the annealing time is 40 min.
Soaking the annealed product in an epoxy resin acetone solution for 10min, and drying and curing at 120 ℃; then, the cured product is subjected to surface insulation layer treatment to obtain a corresponding composite magnetic powder core.
The performance of the detected target product and the performance of the amorphous nanocrystalline powder core prepared by applying the target product in the market are as follows:
example 14:
is prepared with the component composition of Fe78Si9B13The amorphous nanocrystalline alloy of (a); preparing the flaky first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder by using the first amorphous nanocrystalline powder and the spherical second amorphous nanocrystalline powder;
sieving the obtained amorphous nanocrystalline powder to enable the first amorphous nanocrystalline powder to be mixed according to the proportion of 20 percent of-100 meshes to +150 meshes, 40 percent of-150 meshes to +200 meshes and 15 percent of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder is mixed according to the proportion of-200 meshes to +400 meshes of 25 percent; and (3) repeatedly and uniformly mixing the amorphous nanocrystalline powder obtained by proportioning to obtain the corresponding composite alloy powder.
Adding the obtained composite alloy powder into a sodium silicate aqueous solution, uniformly stirring and drying, wherein the proportion of sodium silicate is 0.8%, the proportion of purified water is 4.0%, and the drying temperature is 80 ℃; then adding a mixed solution of 0.6% of silicone resin and 4.0% of acetone, uniformly mixing and drying to obtain coated powder.
Adding 0.6% of zinc stearate into the coated powder, and uniformly stirring and mixing to obtain composite finished product powder;
pressing and molding the composite finished product powder into 27 × 15 × 11 amorphous nanocrystalline magnetic rings; and annealing the amorphous nanocrystalline magnetic ring, wherein the annealing temperature is 450 ℃ and the annealing time is 40 min.
Soaking the annealed product in an epoxy resin acetone solution for 10min, and drying and curing at 120 ℃; then, the cured product is subjected to surface insulation layer treatment to obtain a corresponding composite magnetic powder core.
The performance of the amorphous nanocrystalline magnetic powder core prepared by detecting the target product and applying the target product and the performance of the like product in the market are as follows:
the above description is only a preferred embodiment of the present invention, and those skilled in the art may still modify the described embodiment without departing from the implementation principle of the present invention, and the corresponding modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. The composite finished product powder is characterized by comprising composite alloy powder, wherein the composite alloy powder comprises flaky first amorphous nanocrystalline powder and spherical second amorphous nanocrystalline powder, and the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder are uniformly mixed; the surface of the composite alloy powder is coated with an insulating coating layer.
2. The composite finished powder of claim 1, wherein the mesh size range of the first amorphous nanocrystalline powder is-100 to +270 mesh, and the mesh size range of the second amorphous nanocrystalline powder is-200 to +400 mesh.
3. The composite finished powder of claim 2, wherein the powder ratio of the first amorphous nanocrystalline powder is: 10-30% of-100 meshes to +150 meshes, 20-50% of-150 meshes to +200 meshes, and 10-30% of-200 meshes to +270 meshes; the second amorphous nanocrystalline powder accounts for 10-40%.
4. The composite finished powder of claim 1, wherein the powder material of the first amorphous nanocrystalline powder and/or the second amorphous nanocrystalline powder is a FeSiB amorphous nanocrystalline alloy or a FeSiBCuNb amorphous nanocrystalline alloy.
5. The composite finished powder of claim 4, wherein the powder material adopted by the first amorphous nanocrystalline powder and/or the second amorphous nanocrystalline powder is Fe78Si9B13。
6. A method for preparing a composite powder product according to any one of claims 1 to 5, comprising the steps of:
s1, selecting an amorphous nanocrystalline strip to mechanically crush the amorphous nanocrystalline strip to obtain first amorphous nanocrystalline powder;
s2, selecting amorphous nanocrystalline alloy to carry out water atomization treatment, and obtaining second amorphous nanocrystalline powder;
s3, proportionally mixing the first amorphous nanocrystalline powder and the second amorphous nanocrystalline powder to obtain composite alloy powder;
s4, carrying out insulation coating treatment on the obtained composite alloy powder to obtain coated powder;
and S5, adding the lubricant into the obtained coating powder, and stirring and mixing the coating powder by a stirrer to obtain composite finished product powder.
7. The method of claim 6, wherein in step S4, a first insulation coating method is applied for the insulation coating process, the first insulation coating method comprising the steps of:
s4-01, mixing and attaching inorganic powder to the composite alloy powder by ultrasonic waves to obtain attached powder;
and S4-02, mixing and fully reacting the alkaline solution with the attached powder, and drying to form an insulating coating layer on the surface of the attached powder, thereby obtaining the coated powder.
8. The production method according to claim 6, wherein the first and/or second amorphous nanocrystalline powder contains Fe and/or Si; in step S4, a second insulation coating method is applied to perform insulation coating treatment, the second insulation coating method includes the following steps:
s4-11, preheating and heating a rotary furnace to 240-450 ℃, and adding the composite alloy powder into the rotary furnace;
and S4-12, continuously introducing oxygen-containing air into the rotary furnace, turning the composite alloy powder in the rotary furnace, and fully reacting the surface of the composite alloy powder with the oxygen-containing air to form an insulating coating layer on the surface of the composite alloy powder to obtain the coated powder.
9. The manufacturing method according to claim 6, wherein in step S4, a third insulation coating method is applied to perform the insulation coating process, the third insulation coating method comprising the steps of:
and S4-31, adding the composite alloy powder by using a cohesive inorganic substance, and uniformly mixing to form an insulating coating layer on the surface of the composite alloy powder so as to obtain the coated powder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019108834485 | 2019-09-18 | ||
| CN201910883448.5A CN110571010A (en) | 2019-09-18 | 2019-09-18 | Composite amorphous finished product powder and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111029079A true CN111029079A (en) | 2020-04-17 |
Family
ID=68781002
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910883448.5A Pending CN110571010A (en) | 2019-09-18 | 2019-09-18 | Composite amorphous finished product powder and preparation method thereof |
| CN202010047706.9A Pending CN111029079A (en) | 2019-09-18 | 2020-01-16 | Composite finished product powder and preparation method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910883448.5A Pending CN110571010A (en) | 2019-09-18 | 2019-09-18 | Composite amorphous finished product powder and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN110571010A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908604A (en) * | 2021-01-21 | 2021-06-04 | 广东省科学院材料与加工研究所 | Iron-based amorphous composite magnetic powder core and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639777A (en) * | 2019-09-18 | 2020-01-03 | 佛山市中研非晶科技股份有限公司 | Amorphous product surface coating treatment method, magnetic core and magnetic powder core preparation method |
| CN110571010A (en) * | 2019-09-18 | 2019-12-13 | 佛山市中研非晶科技股份有限公司 | Composite amorphous finished product powder and preparation method thereof |
| CN110935881A (en) * | 2019-12-30 | 2020-03-31 | 佛山市中研非晶科技股份有限公司 | Amorphous nanocrystalline powder baking equipment and use its magnetic powder core production line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101689417A (en) * | 2008-05-16 | 2010-03-31 | 日立金属株式会社 | Powder magnetic core and choke |
| CN110571010A (en) * | 2019-09-18 | 2019-12-13 | 佛山市中研非晶科技股份有限公司 | Composite amorphous finished product powder and preparation method thereof |
-
2019
- 2019-09-18 CN CN201910883448.5A patent/CN110571010A/en active Pending
-
2020
- 2020-01-16 CN CN202010047706.9A patent/CN111029079A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101689417A (en) * | 2008-05-16 | 2010-03-31 | 日立金属株式会社 | Powder magnetic core and choke |
| CN110571010A (en) * | 2019-09-18 | 2019-12-13 | 佛山市中研非晶科技股份有限公司 | Composite amorphous finished product powder and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《非晶纳米晶合金及其软磁性能研究》: "《非晶纳米晶合金及其软磁性能研究》", 31 December 2009 * |
| 河海大学编辑修订委员会: "《水利大辞典》", 31 December 2015 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908604A (en) * | 2021-01-21 | 2021-06-04 | 广东省科学院材料与加工研究所 | Iron-based amorphous composite magnetic powder core and preparation method thereof |
| CN112908604B (en) * | 2021-01-21 | 2022-07-12 | 广东省科学院材料与加工研究所 | Iron-based amorphous composite magnetic powder core and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110571010A (en) | 2019-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111029079A (en) | Composite finished product powder and preparation method thereof | |
| CN111048274A (en) | Composite magnetic powder core and preparation method thereof | |
| CN110834091B (en) | Amorphous finished product powder and preparation method thereof | |
| CN111029077A (en) | Composite alloy powder and preparation method thereof | |
| CN110735092B (en) | Amorphous powder and method for producing same | |
| CN109285685B (en) | Preparation method of high-permeability gas-atomized Fe-Si-Al magnetic powder core | |
| CN110808138B (en) | Amorphous mixed powder, finished powder, magnetic powder core and preparation method thereof | |
| CN110747411B (en) | Master alloy for iron-based amorphous alloy | |
| CN103745791A (en) | Production method of ultrahigh magnetic permeability of iron-based nanocrystalline magnetic powder core | |
| Li et al. | Study on novel Fe-based core-shell structured soft magnetic composites with remarkable magnetic enhancement by in-situ coating nano-ZnFe2O4 layer | |
| Li et al. | Fe-based soft magnetic composites with high permeability and low core loss by in situ coating ZnFe2O4 layer | |
| CN111383835A (en) | FeSiCr granule for integrally formed inductor and preparation method thereof | |
| CN113333743B (en) | Shell-core structured carbon-coated iron-based nanocrystalline alloy composite powder electromagnetic wave absorbent and preparation method thereof | |
| TWI623948B (en) | High Permeability Magnetic Sheet | |
| CN110808139B (en) | Amorphous magnetic powder core and preparation method thereof | |
| CN111068992A (en) | Powder coating method, finished product powder and finished product magnetic powder core preparation method | |
| CN111029078A (en) | Powder insulation coating method, finished product powder and finished product magnetic powder core preparation method | |
| CN114247881A (en) | Method for realizing in-situ passivation on surface of FeSiAl powder | |
| CN111029124A (en) | Powder efficient coating method and finished product powder and finished product magnetic powder core preparation method | |
| CN116013678B (en) | Preparation method of low-loss ferrosilicon magnetic powder core material | |
| CN116156858B (en) | Zinc oxide coated sheet iron silicon chromium wave-absorbing material and preparation method thereof | |
| CN113106358B (en) | Iron-based amorphous alloy/graphene wave-absorbing material and preparation method thereof | |
| CN115064328A (en) | Low-power-consumption soft magnetic alloy material and preparation method thereof | |
| CN113871128B (en) | Soft magnetic alloy composite material and preparation method thereof | |
| KR20190080010A (en) | Manufacturing Method Of Cu-Fe Alloy Film Powder For Electromagnetic Wave Shielding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200417 |
|
| RJ01 | Rejection of invention patent application after publication |