CN113506667A - Small ultrathin sheet-shaped magnetic core and production process thereof - Google Patents
Small ultrathin sheet-shaped magnetic core and production process thereof Download PDFInfo
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- CN113506667A CN113506667A CN202110720574.6A CN202110720574A CN113506667A CN 113506667 A CN113506667 A CN 113506667A CN 202110720574 A CN202110720574 A CN 202110720574A CN 113506667 A CN113506667 A CN 113506667A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000001035 drying Methods 0.000 claims abstract description 17
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 239000011572 manganese Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- 239000011701 zinc Substances 0.000 claims abstract description 11
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 239000008187 granular material Substances 0.000 claims abstract description 4
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 6
- 239000011162 core material Substances 0.000 description 45
- 230000004907 flux Effects 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 2
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 2
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/02—Cores, Yokes, or armatures made from sheets
-
- 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
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
-
- 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
- H01F41/0253—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 for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention provides a small ultrathin flaky magnetic core and a production process thereof, and relates to the technical field of magnetic cores. The production process based on the small ultrathin flaky magnetic core comprises the following production process steps: s1, carrying out warehousing inspection on the oxide particles of iron, manganese and zinc and the salt particles thereof; s2, after the detection is finished, uniformly mixing the oxide particles of iron, manganese and zinc and the salt particles thereof by using a mixer; s3, drying the mixed particles by a drying device after the mixing is finished; s4, guiding the dried mixed granules into a die cavity of a die assembly, and pressing a green body according to the product operation instruction; and S5, checking the thickness and the pressed blank shape of the blank by using a checking device, and numbering the blank after checking in batches. The invention effectively carries out the handle control detection on the thickness dimension of the magnetic core body through a precise instrument, realizes the integrated molding production of the magnetic core body, improves the production efficiency and greatly simplifies the operation flow.
Description
Technical Field
The invention relates to the technical field of magnetic cores, in particular to a small ultrathin flaky magnetic core and a production process thereof.
Background
Magnetic core: magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core materials. The manganese-zinc ferrite has the characteristics of high magnetic permeability and high magnetic flux density and has the characteristic of lower loss. The nickel-zinc ferrite has the characteristics of extremely high resistivity, low magnetic permeability of less than several hundred, and the like. Ferrite cores are used in coils and transformers for various electronic devices.
In order to meet the requirements of the switching power supply for improving efficiency and reducing size and weight, a transformer core with high magnetic flux density, high frequency and low loss is needed. Although high-performance amorphous soft magnetic alloys compete, the soft magnetic ferrite material is still the best choice from cost performance; particularly in the high-frequency field of 100kHz to 1MHz, the novel low-loss high-frequency power ferrite material has more unique advantages. In order to utilize the magnetic core to the maximum, the soft magnetic ferrite material under the operation condition of larger power has the following most main magnetic characteristics in a high-temperature working range (such as 80-100 ℃):
1. high saturation flux density or high amplitude permeability. Thus, the transformer core allows a large magnetic flux offset at a given frequency, which results in a reduction in the number of turns; this is also advantageous for high frequency applications of ferrites, since the cut-off frequency is proportional to the saturation flux density.
2. There is low total core loss in the operating frequency range. A low core loss will allow a high power to pass at a given temperature rise.
In the prior art, the method has certain defects in ultrathin sheet-shaped magnetic cores, insufficient control strength for the size precision of the magnetic cores and relatively traditional forming process, compared with the prior art, the method can be used for producing and processing ultrathin sheet-shaped magnetic cores to realize integrated forming production, improves the production efficiency, greatly simplifies the operation flow, effectively polishes blanks and oxide layers at the magnetic cores in the production process to facilitate production, and can effectively perform control detection on the thickness of the magnetic cores through a precision instrument.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a small ultrathin flaky magnetic core and a production process thereof, and solves the problem of poor production effect of the ultrathin magnetic core.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a small-size ultrathin lamellar magnetic core comprises an ultrathin lamellar magnetic core body, wherein the upper end and the lower end of the ultrathin lamellar magnetic core body are provided with through holes.
A production process of a small ultrathin flaky magnetic core comprises the following production process steps:
s1, warehousing and inspecting the oxide particles of iron, manganese and zinc and salt particles thereof, and inspecting the bulk specific gravity, the water content, the flowability and the particle size distribution of the oxide particles of iron, manganese and zinc and the salt particles thereof;
s2, after the inspection is finished, uniformly mixing the oxide particles of iron, manganese and zinc and the salt particles thereof by using a mixer, and adding a certain amount of additives in the mixing process to improve the bonding degree of the mixture;
s3, drying the mixed particles by a drying device after the mixing is finished;
s4, guiding the dried mixed granules into a die cavity of a die assembly, and pressing a green body according to the product operation instruction to form;
s5, checking the thickness and the pressed blank shape of the blank by checking equipment, and numbering the checked blanks in batches;
s6, placing the batch of green bodies into a kiln for sintering, adjusting the temperature in the kiln to 1300-;
s7, operating the vibration sand mill to remove burrs or oxide layers on the surface of the magnetic core, controlling the grinding degree, and spraying water to perform auxiliary grinding in the grinding process;
s8, drying and spraying the ground magnetic core body, and drying in a drying chamber for use after spraying;
and S9, after the process is completed, checking and packaging in batches.
Preferably, the molding device in S4 includes the supporter, the upper end middle part of supporter is provided with the bed die, the upper end of bed die is run through and is provided with the die cavity, the die cavity is provided with a plurality of and equidistant range.
Preferably, the equal fixedly connected with support frame in upper end both sides of supporter, the inboard fixedly connected with spacing of upper end of support frame, the both sides of spacing run through and are provided with the cylinder, the upper end of cylinder is provided with the air guide.
Preferably, the lower extreme of cylinder extends the one end that has telescopic link and for the below fixedly connected with mount of spacing, the lower extreme fixedly connected with of mount goes up the mould, it is provided with a plurality of and equidistant range to go up the mould, the lower extreme and the die cavity one-to-one of going up the mould.
Preferably, the checking device in S5 uses a precision measuring device to measure the thickness of the blank to detect whether the blank reaches the required ultra-thin thickness.
(III) advantageous effects
The invention provides a small ultrathin flaky magnetic core and a production process thereof. The method has the following beneficial effects:
1. the small ultrathin sheet-shaped magnetic core and the production process thereof can effectively perform molding production on the ultrathin sheet-shaped magnetic core body and can effectively perform control detection on the thickness of the magnetic core body through a precise instrument.
2. The small ultrathin flaky magnetic core and the production process thereof can effectively realize the integrated molding production of the magnetic core body, improve the production efficiency, greatly simplify the operation flow, effectively reduce the failure rate of the molding of the magnetic core body and save the cost.
3. The small ultrathin flaky magnetic core and the production process thereof can effectively and fully grind off burrs or oxide layers on the surface of the magnetic core body to improve the appearance and smoothness of the outer surface of the magnetic core body, thereby facilitating production, processing and use.
Drawings
FIG. 1 is a schematic diagram of an appearance structure of a small-sized ultra-thin-sheet-shaped magnetic core and a production process thereof according to the present invention;
FIG. 2 is a schematic diagram of an appearance structure of a small ultrathin sheet-shaped magnetic core and a molding device for a production process thereof.
Wherein, 1, ultrathin slice magnetic core body; 2. a through hole; 3. a support body; 4. a lower die; 5. a die cavity; 6. a support frame; 7. an upper die; 8. a fixed mount; 9. a limiting frame; 10. a cylinder; 11. and an air guide member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1-2, an embodiment of the present invention provides a small ultrathin sheet-like magnetic core, which includes an ultrathin sheet-like magnetic core body 1, and through holes 2 are provided at upper and lower ends of the ultrathin sheet-like magnetic core body 1.
A production process of a small ultrathin flaky magnetic core comprises the following production process steps:
s1, warehousing and inspecting the oxide particles of iron, manganese and zinc and salt particles thereof, and inspecting the bulk specific gravity, the water content, the flowability and the particle size distribution of the oxide particles of iron, manganese and zinc and the salt particles thereof;
s2, after the inspection is finished, uniformly mixing the oxide particles of iron, manganese and zinc and the salt particles thereof by using a mixer, and adding a certain amount of additives in the mixing process to improve the bonding degree of the mixture;
s3, drying the mixed particles by a drying device after the mixing is finished;
s4, guiding the dried mixed granules into a die cavity of a die assembly, and pressing a green body according to the product operation instruction to form;
s5, checking the thickness and the pressed blank shape of the blank by checking equipment, and numbering the checked blanks in batches;
s6, placing the batch of green bodies into a kiln for sintering, adjusting the temperature in the kiln to 1300-;
s7, operating the vibration sand mill to remove burrs or oxide layers on the surface of the magnetic core, controlling the grinding degree, and spraying water to perform auxiliary grinding in the grinding process;
s8, drying and spraying the ground magnetic core body, and drying in a drying chamber for use after spraying;
and S9, after the process is completed, checking and packaging in batches.
Example two:
s4 the die pressing device comprises a supporting body 3, a lower die 4 is arranged in the middle of the upper end of the supporting body 3, a die cavity 5 penetrates through the upper end of the lower die 4, the die cavities 5 are arranged in a plurality and are arranged at equal intervals, and the lower die 4 can be replaced according to ultrathin sheet-shaped magnetic core bodies 1 with different required sizes, so that a green body can be pressed effectively;
the equal fixedly connected with support frame 6 in upper end both sides of supporter 3, the inboard fixedly connected with spacing 9 in upper end of support frame 6, the both sides of spacing 9 are run through and are provided with cylinder 10, the upper end of cylinder 10 is provided with air guide 11, the lower extreme of cylinder 10 extends the one end that has telescopic link and for spacing 9 below fixedly connected with mount 8, mould 7 is gone up to the lower extreme fixedly connected with of mount 8, it is provided with a plurality of and equidistant range to go up mould 7, the lower extreme and the die cavity 5 one-to-one of going up mould 7, check equipment adopts precision measurement equipment in the S5, come to measure the thickness of body, whether it reaches required ultra-thin size thickness to detect the body.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A small-sized ultrathin laminar magnetic core comprising an ultrathin laminar magnetic core body (1), characterized in that: the upper end and the lower end of the ultrathin sheet-shaped magnetic core body (1) are provided with through holes (2).
2. The process for producing a small-sized ultra-thin-sheet magnetic core according to claim 1, wherein: the method comprises the following production process steps:
s1, warehousing and inspecting the oxide particles of iron, manganese and zinc and salt particles thereof, and inspecting the bulk specific gravity, the water content, the flowability and the particle size distribution of the oxide particles of iron, manganese and zinc and the salt particles thereof;
s2, after the inspection is finished, uniformly mixing the oxide particles of iron, manganese and zinc and the salt particles thereof by using a mixer, and adding a certain amount of additives in the mixing process to improve the bonding degree of the mixture;
s3, drying the mixed particles by a drying device after the mixing is finished;
s4, guiding the dried mixed granules into a die cavity of a die assembly, and pressing a green body according to the product operation instruction to form;
s5, checking the thickness and the pressed blank shape of the blank by checking equipment, and numbering the checked blanks in batches;
s6, placing the batch of green bodies into a kiln for sintering, adjusting the temperature in the kiln to 1300-;
s7, operating the vibration sand mill to remove burrs or oxide layers on the surface of the magnetic core, controlling the grinding degree, and spraying water to perform auxiliary grinding in the grinding process;
s8, drying and spraying the ground magnetic core body, and drying in a drying chamber for use after spraying;
and S9, after the process is completed, checking and packaging in batches.
3. The process for producing a small-sized ultra-thin-sheet magnetic core according to claim 2, wherein: s4 medium pressure mould device includes supporter (3), the upper end middle part of supporter (3) is provided with bed die (4), the upper end of bed die (4) is run through and is provided with die cavity (5), die cavity (5) are provided with a plurality ofly and equidistant range.
4. A process for manufacturing a small ultra-thin laminar magnetic core according to claim 3, characterized in that: the equal fixedly connected with support frame (6) in upper end both sides of supporter (3), inboard fixedly connected with spacing (9) in upper end of support frame (6), the both sides of spacing (9) are run through and are provided with cylinder (10), the upper end of cylinder (10) is provided with air guide (11).
5. The process for producing a small ultra-thin laminar magnetic core according to claim 4, wherein: the lower extreme of cylinder (10) extends the one end that has telescopic link and for below fixedly connected with mount (8) of spacing (9), mould (7) on the lower extreme fixedly connected with of mount (8), go up mould (7) and be provided with a plurality of and equidistant range, the lower extreme and chase (5) one-to-one of going up mould (7).
6. The process for producing a small-sized ultra-thin-sheet magnetic core according to claim 2, wherein: and in the step S5, the detection equipment adopts precision measurement equipment to measure the thickness of the blank body so as to detect whether the blank body reaches the required ultrathin dimension thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110720574.6A CN113506667A (en) | 2021-06-28 | 2021-06-28 | Small ultrathin sheet-shaped magnetic core and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110720574.6A CN113506667A (en) | 2021-06-28 | 2021-06-28 | Small ultrathin sheet-shaped magnetic core and production process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113506667A true CN113506667A (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110720574.6A Pending CN113506667A (en) | 2021-06-28 | 2021-06-28 | Small ultrathin sheet-shaped magnetic core and production process thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11111535A (en) * | 1997-09-30 | 1999-04-23 | Maika Corporation:Kk | Surface mount inductor with perforated magnetic core |
| JP2005108977A (en) * | 2003-09-29 | 2005-04-21 | Tdk Corp | Mn-Zn SYSTEM FERRITE, MAGNETIC CORE FOR TRANSFORMER, AND TRANSFORMER |
| CN209425694U (en) * | 2018-11-14 | 2019-09-24 | 天长市昭田磁电科技有限公司 | A kind of FQ type form forming magnetic core mold |
| CN112321293A (en) * | 2020-11-03 | 2021-02-05 | 横店集团东磁股份有限公司 | Manganese zinc ferrite material with high magnetic conductivity, high frequency, high impedance and high Curie temperature and preparation method thereof |
| CN213378555U (en) * | 2020-09-08 | 2021-06-08 | 成都思凯莱特汽车零部件有限公司 | Novel automobile sunroof guide rail one-out-two die |
-
2021
- 2021-06-28 CN CN202110720574.6A patent/CN113506667A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11111535A (en) * | 1997-09-30 | 1999-04-23 | Maika Corporation:Kk | Surface mount inductor with perforated magnetic core |
| JP2005108977A (en) * | 2003-09-29 | 2005-04-21 | Tdk Corp | Mn-Zn SYSTEM FERRITE, MAGNETIC CORE FOR TRANSFORMER, AND TRANSFORMER |
| CN209425694U (en) * | 2018-11-14 | 2019-09-24 | 天长市昭田磁电科技有限公司 | A kind of FQ type form forming magnetic core mold |
| CN213378555U (en) * | 2020-09-08 | 2021-06-08 | 成都思凯莱特汽车零部件有限公司 | Novel automobile sunroof guide rail one-out-two die |
| CN112321293A (en) * | 2020-11-03 | 2021-02-05 | 横店集团东磁股份有限公司 | Manganese zinc ferrite material with high magnetic conductivity, high frequency, high impedance and high Curie temperature and preparation method thereof |
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