CN104190945B - The preparation method of a kind of amorphous metal soft magnetic-powder core - Google Patents
The preparation method of a kind of amorphous metal soft magnetic-powder core Download PDFInfo
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Abstract
The present invention discloses the preparation method of a kind of amorphous metal soft magnetic-powder core, by amorphous metal soft magnet powder end is sieved, and the first powder being passed through-100��+200 sieve meshes and the 2nd powder passing through-200��+300 sieve meshes; First powder and the 2nd powder are mixed to get powder, and in powder, the weight percent content of the first powder is 60-90%, and the weight percent content of the 2nd powder is 10-40%; By powder pressing shaping obtain amorphous metal soft magnetic-powder core green compact after amorphous metal soft magnetic-powder core green compact are carried out isostatic pressed process, and heat treatment furnace put into by the amorphous metal soft magnetic-powder core green compact after being processed by isostatic pressed, carries out stress relief annealing process in air or nitrogen or inert gas atmosphere; When advantage is isostatic pressed to the reactive force of amorphous metal soft magnetic-powder core all directions big and good uniformity, make amorphous metal soft magnetic-powder core density be greatly improved and distributing homogeneity good, thus amorphous metal soft magnetic-powder core has higher Effective permeability, inductance value and quality factor.
Description
Technical field
The present invention relates to a kind of magnetic core technology of preparing, especially relate to the preparation method of a kind of amorphous metal soft magnetic-powder core.
Background technology
Magnetic core, as a kind of important magnetic functional material, has application prospect widely in the fields such as various inductance component, power transformer. Traditional magnetic core mainly contains iron powder core, Fe-Si-Al magnetic core, iron nickel magnetic core and molybdenum permalloy (MPP) magnetic core etc. Iron powder core price is cheap, but its high frequency characteristics is poor; Fe-Si-Al magnetic core has very low core loss, and frequency response characteristic is better, but the direct current biasing ability of Fe-Si-Al magnetic core under larger current is poor, uses and be limited by very large in larger current field; Iron nickel powder core has extremely good frequency response characteristic in the range of frequency of about 1MHz, and loss is lower, and in existing metal magnetic powder core, iron nickel magnetic core has higher direct current biasing ability, product over-all properties is better, but containing the metallic element nickel that price is high in iron nickel magnetic core, production cost is too high; MPP magnetic core has extremely good frequency response characteristic equally in the range of frequency of about 1MHz, it is that in existing various metal magnetic powder core, core loss is minimum, but the direct current biasing ability of MPP magnetic core is general, MPP magnetic core is also containing the noble metal element such as nickel, molybdenum simultaneously, and price comparison is expensive. Thus, traditional magnetic core is due to the impact of its performance or cost, it may also be useful to time is limited by very large.
Amorphous metal soft magnetic-powder core is as a kind of Novel magnetic powder core, and relative to traditional magnetic core, its good combination property and cost are lower, the concern got more and more. The preparation method of traditional amorphous metal soft magnetic-powder core generally includes following step: (1) prepares amorphous powder; (2) amorphous powder is sieved, obtain powder; (3) powder is carried out insulating wrapped granulation; (4) compression moulding; (5) thermal treatment.
In the preparation method of above-mentioned amorphous metal soft magnetic-powder core, powder is as the core material of amorphous metal soft magnetic-powder core, the good and bad performance directly affecting amorphous metal magnetic core of its performance, and the quality of properties of powder is closely related with powder particulate component, size, distribution and manufacturing process etc. Powder adopts tradition compression moulding technique, although compacting initial stage pressure is more big, amorphous metal magnetic core density is more high, its magnetic permeability also increases thereupon, but, when pressing pressure reaches to a certain degree, owing to amorphous metal magnetic core powder has very high hardness, amorphous metal magnetic core density can not raise again, when pressing pressure is too high, then compacting mould can there be is damage to a certain degree, and the insulating wrapped of amorphous metal magnetic core can be damaged, cause breaking of its insulation layer, thus reduce insulation effect. In addition, poor through the amorphous metal soft magnetic-powder core compactness of tradition compression moulding, and outside bigger to the density gradient at center from amorphous metal magnetic core. Thus known, the preparation method of existing amorphous metal soft magnetic-powder core is owing to being subject to the restriction of compression moulding technique, the density of the amorphous metal magnetic core prepared is lower and distributes uneven, finally causing the Effective permeability of amorphous metal magnetic core lower, inductance value L is on the low side and quality factor q is less.
Summary of the invention
Technical problem to be solved by this invention is to provide the preparation method of a kind of amorphous metal soft magnetic-powder core, the two kinds of powder obtaining size distribution different after being sieved by the sieve of different sieve mesh at amorphous metal soft magnet powder end in this preparation method carry out being mixed to get powder, isostatic pressed process is carried out after compression moulding obtains amorphous metal soft magnetic-powder core green compact, and under temperature is 300-450 DEG C of condition, carry out stress relief annealing process, the amorphous metal soft magnetic-powder core obtaining density height and being evenly distributed.
The present invention solves the problems of the technologies described above the technical scheme adopted: the preparation method of a kind of amorphous metal soft magnetic-powder core, comprises the following steps:
1. amorphous alloy ribbon is heat-treated so that it is brittle;
2. the amorphous alloy ribbon of embrittlement is carried out fragmentation, obtain amorphous metal soft magnet powder end;
3. amorphous metal soft magnet powder end is sieved, the first powder being passed through-100��+200 sieve meshes and the 2nd powder passing through-200��+300 sieve meshes;
4. the first powder and the 2nd powder being mixed to get powder, in described powder, the weight percent content of the first powder is 60-90%, and the weight percent content of the 2nd powder is 10-40%;
5. powder is carried out passivation insulation processing;
6. the powder after passivation insulation processing is carried out coated granulation;
7. the powder pressing after coated granulation is shaped to amorphous metal soft magnetic-powder core green compact;
8. amorphous metal soft magnetic-powder core green compact are carried out isostatic pressed process;
9. heat treatment furnace put into by the amorphous metal soft magnetic-powder core green compact after being processed by isostatic pressed, carries out stress relief annealing process in air or nitrogen or inert gas atmosphere, and temperature is 300-450 DEG C, and soaking time is 0.5-3h.
Described passivation insulation processing is specially: mixed by the phosphoric acid solution that powder and mass concentration are 1-5%, and the part by weight of phosphoric acid solution and powder is: 1:20��1:5, obtains the powder after passivation insulation processing after oven dry.
Described coated granulation is specially: adds organic binder bond, mineral binder bond and lubricant successively in the powder after passivation insulation processing and carries out coated granulation, any one or a few the mixture that wherein said organic binder bond is selected from epoxy resin, resol and polyimide, the addition of described organic binder bond is the 0.2-10% of the powder quality after passivation insulation processing; Described mineral binder bond is selected from SiO2��B2O3And P2O5In any one or a few mixture, the addition of described mineral binder bond is the 0.5-10% of the powder quality after passivation insulation processing; Any one or a few the mixture that described lubricant is selected from Zinic stearas, Magnesium Stearate and calcium stearate, the addition of described lubricant is the 0.1-5% of the powder quality after passivation insulation processing.
Described compression moulding process is specially: by the at room temperature compression moulding of the powder after coated granulation, and pressing pressure is 1600-2000MPa, pressurize 1-10s.
Described isostatic pressed treating processes is specially: by amorphous metal soft magnetic-powder core green compact isostatic pressed process 5-10s when pressure is 200MPa.
Compared with prior art, it is an advantage of the current invention that by amorphous metal soft magnet powder end is sieved, the first powder being passed through-100��+200 sieve meshes and the 2nd powder passing through-200��+300 sieve meshes, first powder and the 2nd powder are mixed to get powder, and in powder, the weight percent content of the first powder is 60-90%, and the weight percent content of the 2nd powder is 10-40%, by powder pressing shaping obtain amorphous metal soft magnetic-powder core green compact after amorphous metal soft magnetic-powder core green compact are carried out isostatic pressed process, isostatic pressing process is positioned in the encloses container filling medium by amorphous metal soft magnetic-powder core green compact, progressively each surface of amorphous metal soft magnetic-powder core green compact is applied equal pressure by pressurization system so that it is increase the density of amorphous metal soft magnetic-powder core green compact when not changing outward appearance shape thus improve its performance, heat treatment furnace put into by amorphous metal soft magnetic-powder core green compact after being processed by isostatic pressed subsequently, air or nitrogen or inert gas atmosphere carry out stress relief annealing process, temperature is 300-450 DEG C, soaking time is 0.5-3h, due to when isostatic pressed to the reactive force of amorphous metal soft magnetic-powder core all directions big and good uniformity, make the density of amorphous metal soft magnetic-powder core be greatly improved and distributing homogeneity good, thus amorphous metal soft magnetic-powder core has higher Effective permeability, inductance value and quality factor, relative to amorphous metal soft magnetic-powder core prepared by existing method, density improves about 2.5%, inductance value improves about 12.4%, quality factor improve about 20.0%, Effective permeability improves about 15.5%, over-all properties is greatly improved,
When passivation insulation processing is specially: the phosphoric acid solution that powder and mass concentration are 1-5% is mixed, the part by weight of phosphoric acid solution and powder is: 1:20��1:5, when obtaining the powder after passivation insulation processing after oven dry, powder particle surface is conducive to form the good insulation layer of insulation effect;
When coated granulation is specially: add organic binder bond, mineral binder bond and lubricant successively in the powder after passivation insulation processing and carry out coated granulation, any one or a few the mixture that wherein organic binder bond is selected from epoxy resin, resol and polyimide, the addition of organic binder bond is the 0.2-10% of the powder quality after passivation insulation processing; Mineral binder bond is selected from SiO2��B2O3And P2O5In any one or a few mixture, the addition of mineral binder bond is the 0.5-10% of the powder quality after passivation insulation processing; Any one or a few the mixture that lubricant is selected from Zinic stearas, Magnesium Stearate and calcium stearate, when the addition of lubricant is the 0.1-5% of the powder quality after passivation insulation processing, frictional force between powder particle reduces, thus adds the mobility of powder;
When compression moulding process is specially: by the at room temperature compression moulding of the powder after coated granulation, pressing pressure is 1600-2000MPa, during pressurize 1-10s, it is possible to preliminary preparation has the amorphous metal soft magnetic-powder core green compact of certain density, meet the requirement of isostatic pressed process;
When isostatic pressed treating processes is specially: when by amorphous metal soft magnetic-powder core green compact, when pressure is 200MPa, isostatic pressed processes 5-10s, significantly increase the density of amorphous metal soft magnetic-powder core green compact further, ensure that preparation has the primary condition of higher magnetic permcability, inductance value and quality factor amorphous metal soft magnetic-powder core.
Accompanying drawing explanation
Fig. 1 the present invention adopts the SEM shape appearance figure at the Fe base amorphous metal soft magnet powder end that machinery grinds and airflow milling composite breaking method obtains;
The comparison diagram of Fig. 2 embodiments of the invention one and amorphous metal soft magnetic-powder core density of the prior art;
The comparison diagram of Fig. 3 embodiments of the invention one and amorphous metal soft magnetic-powder core magnetic permeability of the prior art;
The comparison diagram of Fig. 4 embodiments of the invention one and amorphous metal soft magnetic-powder core inductance value of the prior art;
The comparison diagram of Fig. 5 embodiments of the invention one and amorphous metal soft magnetic-powder core quality factor of the prior art.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one: the preparation method of a kind of amorphous metal soft magnetic-powder core, comprises the following steps:
1. amorphous alloy ribbon is heat-treated so that it is brittle; Amorphous alloy ribbon chooses the obtained Fe base noncrystal alloy strip of single-roller rapid quenching with quenching, and the composition of Fe base noncrystal alloy strip is Fe78Si9B13(at%);
2. the Fe base noncrystal alloy strip of embrittlement adopting machinery mill and airflow milling composite breaking method carry out fragmentation, obtains Fe base amorphous metal soft magnet powder end, the SEM shape appearance figure at Fe base amorphous metal soft magnet powder end is as shown in Figure 1;
3. amorphous metal soft magnet powder end is sieved, the first powder being passed through-100��+200 sieve meshes and the 2nd powder passing through-200��+300 sieve meshes;
4. the first powder and the 2nd powder being mixed to get powder, in powder, the weight percent content of the first powder is the weight percent content of the 90%, two powder is 10%;
5. powder carries out passivation insulation processing in phosphoric acid solution, and detailed process is: mixed by the phosphoric acid solution that powder and mass concentration are 5%, and the part by weight of phosphoric acid solution and powder is: 1:10, obtains the powder after passivation insulation processing at 55 DEG C after drying;
6. the powder after passivation insulation processing is carried out coated granulation;
7. the powder pressing after coated granulation is shaped to amorphous metal soft magnetic-powder core green compact;
8. amorphous metal soft magnetic-powder core green compact are carried out isostatic pressed process;
9. heat treatment furnace put into by the amorphous metal soft magnetic-powder core green compact after being processed by isostatic pressed, carries out stress relief annealing process in air or nitrogen or inert gas atmosphere, and temperature is 430 DEG C, and soaking time is 1h.
In the present embodiment, coated granulation is specially: adds organic binder bond, mineral binder bond and lubricant successively in the powder after passivation insulation processing and carries out coated granulation, any one or a few the mixture that wherein organic binder bond is selected from epoxy resin, resol and polyimide, the addition of organic binder bond is 3% of the powder quality after passivation insulation processing; Mineral binder bond is selected from SiO2��B2O3And P2O5In any one or a few mixture, the addition of mineral binder bond is 5% of the powder quality after passivation insulation processing; Any one or a few the mixture that lubricant is selected from Zinic stearas, Magnesium Stearate and calcium stearate, the addition of lubricant is 0.5% of the powder quality after passivation insulation processing.
In the present embodiment, compression moulding process is specially: by the at room temperature compression moulding of the powder after coated granulation, and pressing pressure is 1800MPa, pressurize 6s.
In the present embodiment, isostatic pressed treating processes is specially: by amorphous metal soft magnetic-powder core green compact isostatic pressed process 10s when pressure is 200MPa.
The amorphous metal soft magnetic-powder core method of the present embodiment prepared carries out performance test when room temperature, 100kHz, and the performance with amorphous metal soft magnetic-powder core of the prior art contrasts, wherein the density comparison diagram of the present embodiment and amorphous metal soft magnetic-powder core of the prior art is as shown in Figure 2, and the magnetic permeability comparison diagram of the present embodiment and amorphous metal soft magnetic-powder core of the prior art is as shown in Figure 3; The inductance value comparison diagram of the present embodiment and amorphous metal soft magnetic-powder core of the prior art is as shown in Figure 4; The quality factor comparison diagram of the present embodiment and amorphous metal soft magnetic-powder core of the prior art is as shown in Figure 5.
From Fig. 2 to Fig. 5, can find out, the amorphous metal soft magnetic-powder core that the amorphous metal soft magnetic-powder core adopting the method for the present embodiment to prepare prepares relative to prior art, its density, Effective permeability, inductance value and quality factor are all greatly improved, and over-all properties is better.
Embodiment two: the preparation method of a kind of amorphous metal soft magnetic-powder core, comprises the following steps:
1. amorphous alloy ribbon is heat-treated so that it is brittle; Amorphous alloy ribbon chooses the obtained Fe base noncrystal alloy strip of single-roller rapid quenching with quenching, and the composition of Fe base noncrystal alloy strip is Fe78Si9B13(at%);
2. the Fe base noncrystal alloy strip of embrittlement adopting machinery mill and airflow milling composite breaking method carry out fragmentation, obtains Fe base amorphous metal soft magnet powder end, the SEM shape appearance figure at Fe base amorphous metal soft magnet powder end is as shown in Figure 1;
3. amorphous metal soft magnet powder end is sieved, the first powder being passed through-100��+200 sieve meshes and the 2nd powder passing through-200��+300 sieve meshes;
4. the first powder and the 2nd powder being mixed to get powder, in powder, the weight percent content of the first powder is the weight percent content of the 80%, two powder is 20%;
5. powder carries out passivation insulation processing in phosphoric acid solution, and detailed process is: mixed by the phosphoric acid solution that powder and mass concentration are 5%, and the part by weight of phosphoric acid solution and powder is: 1:10, obtains the powder after passivation insulation processing at 55 DEG C after drying;
6. the powder after passivation insulation processing is carried out coated granulation;
7. the powder pressing after coated granulation is shaped to amorphous metal soft magnetic-powder core green compact;
8. amorphous metal soft magnetic-powder core green compact are carried out isostatic pressed process;
9. heat treatment furnace put into by the amorphous metal soft magnetic-powder core green compact after being processed by isostatic pressed, carries out stress relief annealing process in air or nitrogen or inert gas atmosphere, and temperature is 420 DEG C, and soaking time is 1.5h.
In the present embodiment, coated granulation is specially: adds organic binder bond, mineral binder bond and lubricant successively in the powder after passivation insulation processing and carries out coated granulation, any one or a few the mixture that wherein organic binder bond is selected from epoxy resin, resol and polyimide, the addition of organic binder bond is 3% of the powder quality after passivation insulation processing; Mineral binder bond is selected from SiO2��B2O3And P2O5In any one or a few mixture, the addition of mineral binder bond is 5% of the powder quality after passivation insulation processing; Any one or a few the mixture that lubricant is selected from Zinic stearas, Magnesium Stearate and calcium stearate, the addition of lubricant is 0.5% of the powder quality after passivation insulation processing.
In the present embodiment, compression moulding process is specially: by the at room temperature compression moulding of the powder after coated granulation, and pressing pressure is 1800MPa, pressurize 6s.
In the present embodiment, isostatic pressed treating processes is specially: by amorphous metal soft magnetic-powder core green compact isostatic pressed process 10s when pressure is 200MPa.
Embodiment three: the preparation method of a kind of amorphous metal soft magnetic-powder core, comprises the following steps:
1. amorphous alloy ribbon is heat-treated so that it is brittle; Amorphous alloy ribbon chooses the obtained Fe base noncrystal alloy strip of single-roller rapid quenching with quenching, and the composition of Fe base noncrystal alloy strip is Fe78Si9B13(at%);
2. the Fe base noncrystal alloy strip of embrittlement adopting machinery mill and airflow milling composite breaking method carry out fragmentation, obtains Fe base amorphous metal soft magnet powder end, the SEM shape appearance figure at Fe base amorphous metal soft magnet powder end is as shown in Figure 1;
3. amorphous metal soft magnet powder end is sieved, the first powder being passed through-100��+200 sieve meshes and the 2nd powder passing through-200��+300 sieve meshes;
4. the first powder and the 2nd powder being mixed to get powder, in powder, the weight percent content of the first powder is the weight percent content of the 70%, two powder is 30%;
5. powder carries out passivation insulation processing in phosphoric acid solution, and detailed process is: mixed by the phosphoric acid solution that powder and mass concentration are 5%, and the part by weight of phosphoric acid solution and powder is: 1:15, obtains the powder after passivation insulation processing at 55 DEG C after drying;
6. the powder after passivation insulation processing is carried out coated granulation;
7. the powder pressing after coated granulation is shaped to amorphous metal soft magnetic-powder core green compact;
8. amorphous metal soft magnetic-powder core green compact are carried out isostatic pressed process;
9. heat treatment furnace put into by the amorphous metal soft magnetic-powder core green compact after being processed by isostatic pressed, carries out stress relief annealing process in air or nitrogen or inert gas atmosphere, and temperature is 400 DEG C, and soaking time is 1.5h.
In the present embodiment, coated granulation is specially: adds organic binder bond, mineral binder bond and lubricant successively in the powder after passivation insulation processing and carries out coated granulation, any one or a few the mixture that wherein organic binder bond is selected from epoxy resin, resol and polyimide, the addition of organic binder bond is 4% of the powder quality after passivation insulation processing; Mineral binder bond is selected from SiO2��B2O3And P2O5In any one or a few mixture, the addition of mineral binder bond is 5% of the powder quality after passivation insulation processing; Any one or a few the mixture that lubricant is selected from Zinic stearas, Magnesium Stearate and calcium stearate, the addition of lubricant is 0.5% of the powder quality after passivation insulation processing.
In the present embodiment, compression moulding process is specially: by the at room temperature compression moulding of the powder after coated granulation, and pressing pressure is 1800MPa, pressurize 6s.
In the present embodiment, isostatic pressed treating processes is specially: by amorphous metal soft magnetic-powder core green compact isostatic pressed process 10s when pressure is 200MPa.
Embodiment four: the preparation method of a kind of amorphous metal soft magnetic-powder core, comprises the following steps:
1. amorphous alloy ribbon is heat-treated so that it is brittle; Amorphous alloy ribbon chooses the obtained Fe base noncrystal alloy strip of single-roller rapid quenching with quenching, and the composition of Fe base noncrystal alloy strip is Fe78Si9B13(at%);
2. the Fe base noncrystal alloy strip of embrittlement adopting machinery mill and airflow milling composite breaking method carry out fragmentation, obtains Fe base amorphous metal soft magnet powder end, the SEM shape appearance figure at Fe base amorphous metal soft magnet powder end is as shown in Figure 1;
3. amorphous metal soft magnet powder end is sieved, the first powder being passed through-100��+200 sieve meshes and the 2nd powder passing through-200��+300 sieve meshes;
4. the first powder and the 2nd powder being mixed to get powder, in powder, the weight percent content of the first powder is the weight percent content of the 60%, two powder is 40%;
5. powder carries out passivation insulation processing in phosphoric acid solution, and detailed process is: mixed by the phosphoric acid solution that powder and mass concentration are 5%, and the part by weight of phosphoric acid solution and powder is: 1:15, obtains the powder after passivation insulation processing at 55 DEG C after drying;
6. the powder after passivation insulation processing is carried out coated granulation;
7. the powder pressing after coated granulation is shaped to amorphous metal soft magnetic-powder core green compact;
8. amorphous metal soft magnetic-powder core green compact are carried out isostatic pressed process;
9. heat treatment furnace put into by the amorphous metal soft magnetic-powder core green compact after being processed by isostatic pressed, carries out stress relief annealing process in air or nitrogen or inert gas atmosphere, and temperature is 430 DEG C, and soaking time is 1h.
In the present embodiment, coated granulation is specially: adds organic binder bond, mineral binder bond and lubricant successively in the powder after passivation insulation processing and carries out coated granulation, any one or a few the mixture that wherein organic binder bond is selected from epoxy resin, resol and polyimide, the addition of organic binder bond is 5% of the powder quality after passivation insulation processing; Mineral binder bond is selected from SiO2��B2O3And P2O5In any one or a few mixture, the addition of mineral binder bond is 6% of the powder quality after passivation insulation processing; Any one or a few the mixture that lubricant is selected from Zinic stearas, Magnesium Stearate and calcium stearate, the addition of lubricant is 0.5% of the powder quality after passivation insulation processing.
In the present embodiment, compression moulding process is specially: by the at room temperature compression moulding of the powder after coated granulation, and pressing pressure is 1800MPa, pressurize 6s.
In the present embodiment, isostatic pressed treating processes is specially: by amorphous metal soft magnetic-powder core green compact isostatic pressed process 10s when pressure is 200MPa.
The amorphous metal soft magnetic-powder core that the method for embodiment two to embodiment four prepares carries out performance test when room temperature, 100kHz, and the performance boost effect that its performance boost effect and embodiment one reflect is substantially identical. In sum, the preparation method of the present invention compared with prior art, greatly improves the performance of product, improves the quality of product, significantly enhances the competitive power of product.
Claims (4)
1. the preparation method of an amorphous metal soft magnetic-powder core, it is characterised in that comprise the following steps:
1. amorphous alloy ribbon is heat-treated so that it is brittle;
2. the amorphous alloy ribbon of embrittlement is carried out fragmentation, obtain amorphous metal soft magnet powder end;
3. amorphous metal soft magnet powder end is sieved, the first powder being passed through-100��+200 sieve meshes and the 2nd powder passing through-200��+300 sieve meshes;
4. the first powder and the 2nd powder being mixed to get powder, in described powder, the weight percent content of the first powder is 60-90%, and the weight percent content of the 2nd powder is 10-40%;
5. powder is carried out passivation insulation processing;
6. the powder after passivation insulation processing is carried out coated granulation;
7. the powder pressing after coated granulation is shaped to amorphous metal soft magnetic-powder core green compact;
8. amorphous metal soft magnetic-powder core green compact are carried out isostatic pressed process;
9. heat treatment furnace put into by the amorphous metal soft magnetic-powder core green compact after being processed by isostatic pressed, carries out stress relief annealing process in air or nitrogen or inert gas atmosphere, and temperature is 300-450 DEG C, and soaking time is 0.5-3h;
Described passivation insulation processing is specially: mixed by the phosphoric acid solution that powder and mass concentration are 1-5%, and the part by weight of phosphoric acid solution and powder is: 1:20��1:5, obtains the powder after passivation insulation processing after oven dry.
2. the preparation method of a kind of amorphous metal soft magnetic-powder core according to claim 1, it is characterized in that described coated granulation is specially: in the powder after passivation insulation processing, add organic binder bond, mineral binder bond and lubricant successively carry out coated granulation, any one or a few the mixture that wherein said organic binder bond is selected from epoxy resin, resol and polyimide, the addition of described organic binder bond is the 0.2-10% of the powder quality after passivation insulation processing; Described mineral binder bond is selected from SiO2��B2O3And P2O5In any one or a few mixture, the addition of described mineral binder bond is the 0.5-10% of the powder quality after passivation insulation processing; Any one or a few the mixture that described lubricant is selected from Zinic stearas, Magnesium Stearate and calcium stearate, the addition of described lubricant is the 0.1-5% of the powder quality after passivation insulation processing.
3. the preparation method of a kind of amorphous metal soft magnetic-powder core according to claim 1, it is characterised in that described compression moulding process is specially: by the at room temperature compression moulding of the powder after coated granulation, and pressing pressure is 1600-2000MPa, pressurize 1-10s.
4. the preparation method of a kind of amorphous metal soft magnetic-powder core according to claim 1, it is characterised in that described isostatic pressed treating processes is specially: by amorphous metal soft magnetic-powder core green compact isostatic pressed process 5-10s when pressure is 200MPa.
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| CN104952583B (en) * | 2015-04-22 | 2017-04-05 | 横店集团东磁股份有限公司 | A kind of preparation method of amorphous metal soft-magnetic powder core |
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| CN103745790A (en) * | 2014-01-15 | 2014-04-23 | 中国计量学院 | Mixed soft magnetic powder for metal magnetic powder core |
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| CN103219119A (en) * | 2013-04-18 | 2013-07-24 | 安泰科技股份有限公司 | Preparation method of mu90 high-permeability Fe-based amorphous magnetic powder core |
| CN103500643A (en) * | 2013-09-29 | 2014-01-08 | 青岛云路新能源科技有限公司 | Method for modified silicon iron boron soft magnetic powder core with magnetic conductivity of 90 |
| CN103730224A (en) * | 2013-12-27 | 2014-04-16 | 青岛云路新能源科技有限公司 | Preparation method for iron-based amorphous magnetic powder core with ultrahigh magnetic conductivity |
| CN103730225A (en) * | 2014-01-10 | 2014-04-16 | 广东工业大学 | Method for preparing amorphous soft magnetic powder core |
| CN103745790A (en) * | 2014-01-15 | 2014-04-23 | 中国计量学院 | Mixed soft magnetic powder for metal magnetic powder core |
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