CN107867866A - A kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product - Google Patents
A kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product Download PDFInfo
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- CN107867866A CN107867866A CN201711119332.1A CN201711119332A CN107867866A CN 107867866 A CN107867866 A CN 107867866A CN 201711119332 A CN201711119332 A CN 201711119332A CN 107867866 A CN107867866 A CN 107867866A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000011265 semifinished product Substances 0.000 title claims abstract description 21
- 238000005520 cutting process Methods 0.000 title claims abstract description 20
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000000227 grinding Methods 0.000 claims abstract description 16
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 15
- 239000003292 glue Substances 0.000 claims abstract description 13
- 238000005453 pelletization Methods 0.000 claims abstract description 11
- 239000003595 mist Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 21
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005245 sintering Methods 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 6
- 229960004643 cupric oxide Drugs 0.000 claims description 6
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 239000013530 defoamer Substances 0.000 claims description 5
- 239000011236 particulate material Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 claims description 4
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3279—Nickel oxides, nickalates, or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3281—Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3298—Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product, its step includes：Raw material is mixed into vibration and pelletizing, is transferred to pre-burning in rotary kiln, configuration polyvinyl alcohol glue, by first two steps product mixed aid in the lump extra-fine grinding, mist projection granulating, compressing, nickel zinc magnetic core semi-finished product intensity obtained by this method is higher, flexibility is good, less brittle, homogeneous, convenient follow-up cutting, rupture, breakage are not susceptible to during cutting, otch is neat, can substantially reduce the scrappage of production process, production cost is advantageously reduced, improves production efficiency.
Description
Technical field
The present invention relates to a kind of nickel zinc magnetic core, particularly a kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product.
Background technology
Nickel zinc magnetic core semi-finished product are made step and are：Mix vibrations, pre-burning, mist projection granulating, shaping compacting, square cutting.It is existing
Have that the nickel zinc magnetic core semi-finished product hardness in technology is larger, show fragility, and quality is uneven, density and mechanical property performance everywhere
Differ, the defects of causing to occur in follow-up working angles rupture, damaged, otch incompleteness, these defects not only influenceed outward appearance but also
Electromagnetic performance is influenceed, thus the semi-finished product for these defects occur will be scrapped, and increase production cost, reduce production efficiency.
The content of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product, comprises the following steps：
A, dispensing and mixing vibration：By mass fraction by raw material di-iron trioxide 65%-70%, zinc oxide 15%-19%, cupric oxide
3%-5%, nickel protoxide 10%-15%, bismuth oxide 0.1%-0.3%, tungsten oxide 0.05%-0.1%, zirconium oxide 0.005%-0.01%, two
Silica 0.05-0.1%, which is uniformly poured into ball mill hopper, carries out mixing vibration 60 minutes, is then transferred in pelletizer and is made
Ball operation, pelletizing material is obtained, the sphere diameter requirement of the pelletizing material is between 1-8mm；
B, pre-burning：The pelletizing material that step A is obtained, which is even added to from hopper in rotary kiln, carries out pre-burning, in rotary kiln
Four regions, temperature rotates boiler tube 30-50 minutes between 820-860 DEG C, with 3-5r/min rotating speed, then is carried out with ball mill
Ball milling 50 minutes, obtain pre-burning vibration material；
C, glue is boiled：92 parts of pure water are warming up to 50-55 DEG C by weight, 8 parts of granule of polyvinyl alcohol stirrings is then added and is warming up to
95 DEG C, continue stopping heating after heating while stirring 5 hours and continue to stir, filter, gathered after temperature is dropped to below 45 DEG C
Vinyl alcohol glue, be sealed with glue bucket it is standby, wherein, the granule of polyvinyl alcohol includes two kinds of models, specially described poly-
BP-17 mass fractions account for 30%-70% in vinyl alcohol particle, and BP-05 accounts for 30%-70%；
D, extra-fine grinding：The described vibration material 58-65 parts for by weight obtaining pure water 20-25 parts and step B add vertical sand
Grinding machine is ground 20 minutes, then toward adding dispersant 0.2-0.5 parts, defoamer 0.1-0.35 parts, sintering in the vertical grinding machine
Described polyvinyl alcohol glue 16-20 parts that auxiliary agent 0.6-1.8 parts and step C are obtained, grinding are pumped into horizontal sand mill after 60 minutes
Extra-fine grinding 60 minutes is carried out, obtains slurry；
E, mist projection granulating:The slurry that step D is obtained carries out spray granulation granulation, and spray condition is set as being sprayed into
300 ± 20 DEG C of temperature of mouth, 110 ± 10 DEG C of spray outlet temperature, feeding frequency are 10-13Hz, rejection tablet frequency setting 60Hz, are sprayed
Particulate material out needs to carry out humidification process, it is desirable to apparent density 1.25-1.45g/cm3, water content≤0.4% obtains
Pellet warehouse entry is standby；
F, shaping compacting:The particulate material that step E is obtained presses institute by particular manufacturing craft on powder former
Need the semi-finished product of shape and size.
The temperature in four regions described in rotary kiln is specially 860 DEG C, 845 DEG C, 845 DEG C, 820 DEG C in step B.
Granule of polyvinyl alcohol described in step C is made up of BP-17 40% and BP-05 60%.
Sintering aid described in step D by following mass fraction material composition：Cupric oxide 62%-94%, bismuth oxide 6%-
38%。
The requirement of slurry average grain diameter D50 described in step D is below 0.5 μm.
The beneficial effects of the invention are as follows：It is higher with nickel zinc magnetic core semi-finished product intensity made from manufacture method of the present invention, it is soft
Property good, less brittle, homogeneous, convenient follow-up cutting, rupture, damaged is not susceptible to during cutting, otch is neat, can substantially reduce
The scrappage of production process, production cost is advantageously reduced, improve production efficiency.
Embodiment
A kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product, comprises the following steps：
A, dispensing and mixing vibration：By mass fraction by raw material di-iron trioxide 65%-70%, zinc oxide 15%-19%, cupric oxide
3%-5%, nickel protoxide 10%-15% and auxiliary material bismuth oxide 0.1%-0.3%, tungsten oxide 0.05%-0.1%, zirconium oxide 0.005%-
0.01%th, silica 0.05-0.1%, which is uniformly poured into ball mill hopper, carries out mixing vibration 60 minutes, mixes various raw materials
It is uniform and levigate, progress pelletizing operation in pelletizer is then transferred to, obtains pelletizing material, the sphere diameter requirement of the pelletizing material is in 1-
Between 8mm.
B, pre-burning：The pelletizing material that step A is obtained, which is even added to from hopper in rotary kiln, carries out pre-burning, makes to mix
Condensation material reduces shrinkage factor in follow-up sintering step, to prevent Product Variant.Four regions in rotary kiln, temperature is in 820-860
Between DEG C, specifically it is set as 860 DEG C, 845 DEG C, 845 DEG C, 820 DEG C, is rotated boiler tube 30-50 minutes with 3-5r/min rotating speed, then
Ball milling is carried out with ball mill 50 minutes, obtains pre-burning vibration material.
C, glue is boiled：92 parts of pure water are warming up to 50-55 DEG C by weight, 8 parts of granule of polyvinyl alcohol stirrings is then added and rises
Temperature continues stopping heating after heating while stirring 5 hours and continues to stir, filter, obtain after temperature is dropped to below 45 DEG C to 95 DEG C
To polyvinyl alcohol glue, it is sealed with glue bucket standby.Wherein, the granule of polyvinyl alcohol includes two kinds of models, specially institute
State BP-17 mass fractions in granule of polyvinyl alcohol and account for 30%-70%, BP-05 accounts for 30%-70%.It is highly preferred that the polyvinyl alcohol
Grain is made up of BP-17 40% and BP-05 60%.
D, extra-fine grinding：The described vibration material 58-65 parts for by weight obtaining pure water 20-25 parts and step B add vertical
Formula sand mill is ground 20 minutes, then toward add in the vertical grinding machine dispersant 0.2-0.5 parts, defoamer 0.1-0.35 parts,
Described polyvinyl alcohol glue 16-20 parts that sintering aid 0.6-1.8 parts and step C are obtained, grinding are pumped into Horizontal sand after 60 minutes
Grinding machine carries out extra-fine grinding 60 minutes, obtains slurry.It is required that slurry average grain diameter D50 is less than 0.5 micron.The sintering aid tool
Body by following mass fraction material composition：Cupric oxide 62%-94%, bismuth oxide 6%-38%.The defoamer uses ND44
DEfoamer, the dispersant use ROHM AND HAAS 731D.
E, mist projection granulating:The slurry that step D is obtained carries out spray granulation granulation, material is had necessarily
Mobility is to be molded.Spray condition is set as 300 ± 20 DEG C of inlet temperature of spraying, 110 ± 10 DEG C of spray outlet temperature, feeding
Frequency is 10-13Hz, rejection tablet frequency setting 60Hz, and the powder for spraying out needs to carry out humidification process, it is desirable to which apparent density is
1.25-1.45g/cm3, water content≤0.4%, it is standby to obtain particulate material warehouse entry.
F, shaping compacting:By the particulate material that step E is obtained by particular manufacturing craft on powder former it is compressing
The semi-finished product of shape and size needed for going out.
Higher with nickel zinc magnetic core semi-finished product intensity made from manufacture method of the present invention, flexibility is good, less brittle, and quality is equal
It is even, convenient follow-up cutting, rupture, damaged is not susceptible to during cutting, otch is neat, can substantially reduce the scrappage of production process.
Scrappage is more than 1.5% in subsequently cutting step for the nickel zinc magnetic core semi-finished product of art methods manufacture, by the inventive method
The nickel zinc magnetic core of manufacture subsequently cutting step in scrappage only below 0.2%.The method of the present invention, which advantageously reduces, to be produced into
This, improves production efficiency.
Claims (5)
1. a kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product, it is characterised in that comprise the following steps：
A, dispensing and mixing vibration：By mass fraction by raw material di-iron trioxide 65%-70%, zinc oxide 15%-19%, cupric oxide
3%-5%, nickel protoxide 10%-15%, bismuth oxide 0.1%-0.3%, tungsten oxide 0.05%-0.1%, zirconium oxide 0.005%-0.01%, two
Silica 0.05-0.1%, which is uniformly poured into ball mill hopper, carries out mixing vibration 60 minutes, is then transferred in pelletizer and is made
Ball operation, pelletizing material is obtained, the sphere diameter requirement of the pelletizing material is between 1-8mm；
B, pre-burning：The pelletizing material that step A is obtained, which is even added to from hopper in rotary kiln, carries out pre-burning, in rotary kiln
Four regions, temperature rotates boiler tube 30-50 minutes between 820-860 DEG C, with 3-5r/min rotating speed, then is carried out with ball mill
Ball milling 50 minutes, obtain pre-burning vibration material；
C, glue is boiled：92 parts of pure water are warming up to 50-55 DEG C by weight, 8 parts of granule of polyvinyl alcohol stirrings is then added and is warming up to
95 DEG C, continue stopping heating after heating while stirring 5 hours and continue to stir, filter, gathered after temperature is dropped to below 45 DEG C
Vinyl alcohol glue, be sealed with glue bucket it is standby, wherein, the granule of polyvinyl alcohol includes two kinds of models, specially described poly-
BP-17 mass fractions account for 30%-70% in vinyl alcohol particle, and BP-05 accounts for 30%-70%；
D, extra-fine grinding：The described vibration material 58-65 parts for by weight obtaining pure water 20-25 parts and step B add vertical sand
Grinding machine is ground 20 minutes, then toward adding dispersant 0.2-0.5 parts, defoamer 0.1-0.35 parts, sintering in the vertical grinding machine
Described polyvinyl alcohol glue 16-20 parts that auxiliary agent 0.6-1.8 parts and step C are obtained, grinding are pumped into horizontal sand mill after 60 minutes
Extra-fine grinding 60 minutes is carried out, obtains slurry；
E, mist projection granulating:The slurry that step D is obtained carries out spray granulation granulation, and spray condition is set as being sprayed into
300 ± 20 DEG C of temperature of mouth, 110 ± 10 DEG C of spray outlet temperature, feeding frequency are 10-13Hz, rejection tablet frequency setting 60Hz, are sprayed
Powder out needs to carry out humidification process, it is desirable to apparent density 1.25-1.45g/cm3, water content≤0.4%, obtain particle
Expect that warehouse entry is standby；
F, shaping compacting:The particulate material that step E is obtained presses institute by particular manufacturing craft on powder former
Need the semi-finished product of shape and size.
2. the manufacture method of Cutting free nickel zinc magnetic core semi-finished product according to claim 1, it is characterised in that turned round in step B
The temperature in four regions described in kiln is specially 860 DEG C, 845 DEG C, 845 DEG C, 820 DEG C.
3. the manufacture method of Cutting free nickel zinc magnetic core semi-finished product according to claim 1, it is characterised in that described in step C
Granule of polyvinyl alcohol is made up of BP-17 40% and BP-05 60%.
4. the manufacture method of Cutting free nickel zinc magnetic core semi-finished product according to claim 1, it is characterised in that described in step D
Sintering aid by following mass fraction material composition：Cupric oxide 62%-94%, bismuth oxide 6%-38%.
5. the manufacture method of high pendulum folding intensity nickel zinc soft magnetic core according to claim 1, it is characterised in that institute in step D
Slurry average grain diameter D50 requirements are stated below 0.5 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119332.1A CN107867866A (en) | 2017-11-14 | 2017-11-14 | A kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711119332.1A CN107867866A (en) | 2017-11-14 | 2017-11-14 | A kind of manufacture method of Cutting free nickel zinc magnetic core semi-finished product |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111508699A (en) * | 2020-04-21 | 2020-08-07 | 东莞市南祥磁电科技有限公司 | Method for reprocessing magnetic core powder after compression molding |
| CN114653939A (en) * | 2022-03-01 | 2022-06-24 | 山东汇嘉磁电科技有限公司 | Production and processing method of U-shaped magnetic powder core |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111508699A (en) * | 2020-04-21 | 2020-08-07 | 东莞市南祥磁电科技有限公司 | Method for reprocessing magnetic core powder after compression molding |
| CN111508699B (en) * | 2020-04-21 | 2022-06-10 | 东莞市南祥磁电科技有限公司 | Method for reprocessing magnetic core powder after compression molding |
| CN114653939A (en) * | 2022-03-01 | 2022-06-24 | 山东汇嘉磁电科技有限公司 | Production and processing method of U-shaped magnetic powder core |
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