CN106658800A - Induction coil heating device and manufacturing method thereof - Google Patents
Induction coil heating device and manufacturing method thereof Download PDFInfo
- Publication number
- CN106658800A CN106658800A CN201611064703.6A CN201611064703A CN106658800A CN 106658800 A CN106658800 A CN 106658800A CN 201611064703 A CN201611064703 A CN 201611064703A CN 106658800 A CN106658800 A CN 106658800A
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- Prior art keywords
- induction coil
- layer
- heating apparatus
- induction
- free glass
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Links
- 230000006698 induction Effects 0.000 title claims abstract description 109
- 238000010438 heat treatment Methods 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052802 copper Inorganic materials 0.000 claims abstract description 28
- 239000010949 copper Substances 0.000 claims abstract description 28
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 25
- 229920001971 elastomer Polymers 0.000 claims description 22
- 239000003973 paint Substances 0.000 claims description 18
- 230000004888 barrier function Effects 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 11
- 239000011491 glass wool Substances 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000002513 implantation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 239000000615 nonconductor Substances 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 241001124569 Lycaenidae Species 0.000 description 2
- 235000014987 copper Nutrition 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/42—Cooling of coils
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/02—Induction heating
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
The invention provides an induction coil heating device, which comprises an induction coil and a cylindrical aluminum oxide layer, wherein an insulating layer is arranged on the surface of the induction coil; the cylindrical aluminum oxide layer wraps the induction coil; the induction coil is of a concentric circle structure formed by winding a red copper pipe along a single direction and the induction coil is arranged at the middle part in the cylindrical aluminum oxide layer; meanwhile, two ends of the induction coil extend out of the cylindrical aluminum oxide layer; threads connected with an induction power supply are welded in two ends of the induction coil; and a filing layer is implanted into a gap part of the induction coil, so that the insulating effect of the induction coil is effectively improved, the insulating property is improved, medium-high frequency induction heating can be achieved, a metal can be heated or melted, a non-conductor magnetic conducting workpiece can also be heated by adopting graphite and the like as an induction heating source, the heating performance is reliable, the uniformity is good and the heating efficiency is high; and the induction coil heating device can be applied to induction heating places of a laboratory, industrial production and the like, and is safe and reliable in use, reasonable in structure, simple in manufacturing and relatively low in cost.
Description
Technical field
The present invention relates to induction heating equipment technical field, more particularly to a kind of induction coil heating apparatus and its making side
Method.
Background technology
Induction heating technique has the advantages that firing rate is fast, application is convenient, energy saving, in apparatus for melting metal because of it
On be applied widely, but the induction coil in induction heating equipment is typically formed using copper pipe coiling, in copper pipe surface
The megohmite insulants such as brush insulating coating are to insulate, but its resistance to elevated temperatures is poor, and surface strength is low.
In industrial production and laboratory, often vortex heat is produced as thermal source, to various metals by the use of electromagnetic induction principle
Or non-metallic member is melted or heated, but medium must be heated to higher temperature（More than 700 DEG C）, the time one grows, and senses
Easily there is cracking peeling and come off in the outer layer insulation paint of coil, so as to cause coil exposed, insulation effect is deteriorated；Now metal,
Dust is easily deposited on coil surface, in turn results in induction coil short circuit, and the efficiency of heating surface is low.In addition, induction coil fixes adopt more
Bakelite is supported, and makes complicated and insufficient strength.
The content of the invention
Technical problem solved by the invention is to provide a kind of induction coil heating apparatus and preparation method thereof, to solve
Shortcoming in above-mentioned background technology.
Technical problem solved by the invention employs the following technical solutions to realize：
A kind of induction coil heating apparatus, including surface be provided with insulating barrier induction coil and by induction coil be wrapped in
Central column alumina layer, wherein, induction coil is concentric structure of the copper tube along single direction coiling, and induction coil is placed in
Middle part in central column alumina layer, while central column alumina layer is stretched out in two terminations of induction coil, and in the line of induction
Two ends of circle are welded with the screw thread being connected with induction power supply, and the gap of induction coil is implanted with packed layer.
In the present invention, the central column alumina layer middle part is provided with through hole, and through-hole diameter is same less than induction coil
Circle diameter.
In the present invention, the insulating barrier that the induction coil surface is arranged includes two-layer insulated paint and two-layer alkali-free glass wool
Band, and insulated paint and alkali-free glass wool tape alternation be placed on the copper tube of induction coil, to ensure the insulation on induction coil surface
Effect.
In the present invention, the side lower part of central column alumina layer one is provided with the wiring hole stretched out for termination.
In the present invention, water-cooling channel is provided with the induction coil, can be to its water flowing cooling during work.
In the present invention, the copper tube is made up of T2 red coppers, and such red copper has good corrosion-resistant and processing characteristics,
And it is high temperature resistant, high pressure resistant.
In the present invention, the copper tube external diameter is 12mm, and wall thickness is 2mm.
A kind of preparation method of induction coil heating apparatus, comprises the following steps that：
1）Prepare the insulating barrier on induction coil surface
First by copper tube along single direction around concentric structure is made as, then in the exhausted of one layer of fast solidification of red copper pipe surface spary
Edge paint, then ground floor alkali-free glass silk ribbon is wound around into spary have on the copper tube of insulated paint；Treat ground floor alkali-free glass
After silk ribbon winding is finished, then one layer of insulated paint of spary on ground floor alkali-free glass wool band, then by second layer alkali-free glass silk ribbon
Being wrapped in spary has the ground floor alkali-free glass wool belt surface of second layer insulated paint, to ensure that the insulation on induction coil surface is imitated
Really, finally in two ends welding screw thread of induction coil；
2）Place induction coil
Prepared by insulating barrier into the induction coil that finishes to be placed in rubber mold, the rubber mold center is solid cylinder, mould
Periphery is ring-shaped rubber mould, and solid cylinder is connected on base, and base is fixed on platform, and ring-shaped rubber mould is held in base
On, it is provided with the induction coil of insulating barrier and is placed between solid cylinder and ring-shaped rubber mould；
3）Prepare induction coil heating apparatus
Gap between induction coil and solid cylinder, ring-shaped rubber mould, it is equal with distilled water mixing using alumina powder
Even filled therewith, slurry is then dried, be placed in baking oven after the demoulding, and ladder-elevating temperature to 400 DEG C make slurry curing, obtain ring
Column alumina layer, then central column alumina layer is stretched out in two terminations of induction coil, you can obtain induction coil heating apparatus.
In the present invention, step 2）In, platform lower section is provided with oscillating column pump, for the slurry of compacting filling.
Beneficial effect：
1）Induction coil is wrapped up by central column alumina layer in the present invention, effectively improves the insulation effect of induction coil, not only
Insulating properties are improve, and is capable of achieving medium-high frequency sensing heating, both can have been heated or fusing metal, it is also possible to which graphite etc. is used as sensing
Pyrotoxin heats non-conductor magnetic conduction workpiece, and heating properties reliability, uniformity is good, and the efficiency of heating surface is high；
2）Intensity of the present invention is high, supports convenient, can be applicable to the sensing heating such as laboratory and industrial production place, can using safety
Lean on；
3）Present configuration rationally, makes simple, and cost is relatively low.
Description of the drawings
Fig. 1 is the structural representation of presently preferred embodiments of the present invention.
Fig. 2 is the rubber mold sectional view in presently preferred embodiments of the present invention.
Fig. 3 is the rubber mold structural representation in presently preferred embodiments of the present invention.
In figure, 1, induction coil, 11, termination, 2, solid cylinder, 3, ring-shaped rubber mould, 4, base, 5, central column aluminum oxide
Layer.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are readily apparent from clearly, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
A kind of induction coil heating apparatus, including surface is provided with the induction coil 1, packed layer of insulating barrier and by the line of induction
Circle 1 is wrapped in interior central column alumina layer 5 with packed layer, wherein, induction coil 1 adopts copper tube coiling, by copper tube edge
Single direction is placed in middle part in central column alumina layer 5 around concentric structure is made as, while two terminations of induction coil 1
11 stretch out central column alumina layer 5, and are welded with screw thread at two terminations 11 of induction coil 1, to be connected with induction power supply,
Filling is placed on the gap of induction coil 1；The middle part of central column alumina layer 5 is provided with through hole, and through-hole diameter is less than sensing
The concentric circular diameter of coil.
The insulating barrier that the surface of the induction coil 1 is arranged includes two-layer insulated paint and two-layer alkali-free glass silk ribbon, and insulate
Paint is placed on the copper tube of induction coil 1 with alkali-free glass wool tape alternation, to ensure the insulation effect on the surface of induction coil 1.
The side lower part of central column alumina layer 5 one is provided with the wiring hole stretched out for termination 11.
Water-cooling channel is provided with the induction coil 1, can be to its water flowing cooling during work.
The copper tube is by T2 red coppers（Such red copper has good corrosion-resistant and processing characteristics, and high temperature resistant, resistance to height
Pressure）Make.
The copper tube external diameter is 12mm, and wall thickness is 2mm.
A kind of preparation method of induction coil heating apparatus, comprises the following steps that：
1）Prepare the insulating barrier on the surface of induction coil 1
First by copper tube along single direction around concentric structure is made as, then in the exhausted of one layer of fast solidification of red copper pipe surface spary
Edge paint, then ground floor alkali-free glass silk ribbon is wound around into spary have on the copper tube of insulated paint；Treat ground floor alkali-free glass
After silk ribbon winding is finished, then one layer of insulated paint of spary on ground floor alkali-free glass wool band, then by second layer alkali-free glass silk ribbon
Ground floor alkali-free glass wool belt surface is wrapped in,
To ensure the insulation effect on the surface of induction coil 1, screw thread is finally welded at two terminations 11 of induction coil 1；
2）Place induction coil 1
Insulating barrier is prepared the induction coil 1 for finishing to be placed in rubber mold made by high-strength rubber, the mold center is
Solid cylinder 2, mould periphery is ring-shaped rubber mould 3, and solid cylinder 2 is connected on base 4, and base 4 is fixed on platform, platform
Lower section is provided with oscillating column pump, and ring-shaped rubber mould 3 is held on base 4, and induction coil 1 is placed in solid cylinder 2 and ring-shaped rubber mould 3
Between；
3）Prepare induction coil heating apparatus
Gap between induction coil 1 and solid cylinder 2, ring-shaped rubber mould 3, using alumina powder and distilled water mixing
Uniform filled therewith, slurry is then dried, be placed in baking oven after the demoulding, and ladder-elevating temperature to 400 DEG C make slurry curing, obtain
Central column alumina layer 5, then central column alumina layer 5 is stretched out in two terminations 11 of induction coil 1, you can obtain the sense of high intensity
Answer coil heating apparatus.
In the present embodiment, based on being coated with the induction coil 1 of insulating barrier by surface, by using high-strength rubber mould
Tool, and carries out solidifying the induction coil heating apparatus for obtaining high intensity using alumina powder as inserts, it is to avoid heritage should
Coming off for coil surface insulating barrier causes the exposed short circuit accident for causing of coil, insulation effect to greatly enhance, and is improving heat utilization
Increased the intensity of induction coil 1 while rate again, it is safe and reliable.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (9)
1. a kind of induction coil heating apparatus, it is characterised in that including surface be provided with insulating barrier induction coil and will sensing
Coil is wrapped in interior central column alumina layer, wherein, induction coil is concentric structure of the copper tube along single direction coiling,
And induction coil is placed in middle part in central column alumina layer, while central column aluminum oxide is stretched out in two terminations of induction coil
Layer, and the screw thread being connected with induction power supply is welded with two ends of induction coil, the gap implantation of induction coil
There is packed layer.
2. a kind of induction coil heating apparatus according to claim 1, it is characterised in that in the central column alumina layer
Portion is provided with through hole, and the concentric circles equal diameters of through-hole diameter and induction coil.
3. a kind of induction coil heating apparatus according to claim 1, it is characterised in that the induction coil surface is arranged
Insulating barrier include two-layer insulated paint and two-layer alkali-free glass silk ribbon, and insulated paint is placed in the line of induction with alkali-free glass wool tape alternation
On the copper tube of circle.
4. a kind of induction coil heating apparatus according to claim 1, it is characterised in that the central column alumina layer one
Side lower part is provided with the wiring hole stretched out for termination.
5. a kind of induction coil heating apparatus according to claim 1, it is characterised in that be provided with the induction coil
Water-cooling channel.
6. a kind of induction coil heating apparatus according to claim 1, it is characterised in that the copper tube is T2 red copper systems
Into.
7. a kind of induction coil heating apparatus according to claim 1, it is characterised in that the copper tube external diameter is
12mm, wall thickness is 2mm.
8. a kind of induction coil heating apparatus according to any one of claim 1～7, it is characterised in that induction coil adds
The preparation method of thermal, comprises the following steps that：
1) insulating barrier on induction coil surface is prepared
First by copper tube along single direction around concentric structure is made as, then in the exhausted of one layer of fast solidification of red copper pipe surface spary
Edge paint, then ground floor alkali-free glass silk ribbon is wound around into spary have on the copper tube of insulated paint；Treat ground floor alkali-free glass
After silk ribbon winding is finished, then one layer of insulated paint of spary on ground floor alkali-free glass wool band, then by second layer alkali-free glass silk ribbon
Being wrapped in spary has the ground floor alkali-free glass wool belt surface of second layer insulated paint, finally welds in two ends of induction coil
Connect screw thread；
2) induction coil is placed
Prepared by insulating barrier into the induction coil that finishes to be placed in rubber mold, the rubber mold center is solid cylinder, mould
Periphery is ring-shaped rubber mould, and solid cylinder is connected on base, and base is fixed on platform, and ring-shaped rubber mould is held in base
On, it is provided with the induction coil of insulating barrier and is placed between solid cylinder and ring-shaped rubber mould；
3) induction coil heating apparatus are prepared
Gap between induction coil and solid cylinder, ring-shaped rubber mould, it is equal with distilled water mixing using alumina powder
Even filled therewith, slurry is then dried, be placed in baking oven after the demoulding, and ladder-elevating temperature to 400 DEG C make slurry curing, obtain ring
Column alumina layer, then central column alumina layer is stretched out in two terminations of induction coil, you can obtain induction coil heating apparatus.
9. a kind of induction coil heating apparatus according to claim 8, it is characterised in that the system of induction coil heating apparatus
Make method and step 2) in, platform lower section is provided with oscillating column pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064703.6A CN106658800A (en) | 2016-11-28 | 2016-11-28 | Induction coil heating device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064703.6A CN106658800A (en) | 2016-11-28 | 2016-11-28 | Induction coil heating device and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106658800A true CN106658800A (en) | 2017-05-10 |
Family
ID=58811747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611064703.6A Pending CN106658800A (en) | 2016-11-28 | 2016-11-28 | Induction coil heating device and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106658800A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525968A (en) * | 2018-03-21 | 2018-09-14 | 福州弘博工艺有限公司 | A kind of stoving process on paint spraying surface |
| CN109355487A (en) * | 2018-11-30 | 2019-02-19 | 镇江佳联金属制品有限公司 | A kind of chisel annealing treatment equipment and annealing process |
| CN110170775A (en) * | 2019-06-13 | 2019-08-27 | 国网山东省电力公司青州市供电公司 | A kind of welding magnetic-type assisted heating device and welding method |
| CN112839400A (en) * | 2020-12-31 | 2021-05-25 | 四川瀚舟新能源科技有限公司 | Battery heating assembly and manufacturing process thereof |
| CN114126126A (en) * | 2021-12-14 | 2022-03-01 | 中国人民解放军第五七一九工厂 | Method for manufacturing induction coil and method for manufacturing inductor |
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| CN1697574A (en) * | 2004-05-14 | 2005-11-16 | 荣有限公司 | Sheathing heater,its mfg. method and heater |
| CN101123832A (en) * | 2007-07-31 | 2008-02-13 | 王文生 | An electromagnetic induction thermal pipe for instantly heating electrical heater |
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| CN206399183U (en) * | 2017-01-12 | 2017-08-11 | 洛阳蓝海实业有限公司 | A kind of electromagnetic induction aluminium melting furnace |
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| JPH11251049A (en) * | 1997-12-29 | 1999-09-17 | Kitashiba Electric Co Ltd | Induction heating apparatus |
| CN2420084Y (en) * | 2000-04-07 | 2001-02-21 | 东北大学 | Built-in soft contace electromagnetic stirring crystallizer |
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| CN1697574A (en) * | 2004-05-14 | 2005-11-16 | 荣有限公司 | Sheathing heater,its mfg. method and heater |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525968A (en) * | 2018-03-21 | 2018-09-14 | 福州弘博工艺有限公司 | A kind of stoving process on paint spraying surface |
| CN108525968B (en) * | 2018-03-21 | 2021-07-27 | 福州弘博工艺有限公司 | Drying process for paint spraying surface |
| CN109355487A (en) * | 2018-11-30 | 2019-02-19 | 镇江佳联金属制品有限公司 | A kind of chisel annealing treatment equipment and annealing process |
| CN109355487B (en) * | 2018-11-30 | 2020-09-04 | 镇江佳联金属制品有限公司 | Chisel annealing treatment equipment and annealing process method |
| CN110170775A (en) * | 2019-06-13 | 2019-08-27 | 国网山东省电力公司青州市供电公司 | A kind of welding magnetic-type assisted heating device and welding method |
| CN110170775B (en) * | 2019-06-13 | 2021-03-02 | 国网山东省电力公司青州市供电公司 | Magnetic type auxiliary heating device for welding and welding method |
| CN112839400A (en) * | 2020-12-31 | 2021-05-25 | 四川瀚舟新能源科技有限公司 | Battery heating assembly and manufacturing process thereof |
| CN112839400B (en) * | 2020-12-31 | 2023-02-03 | 四川瀚舟新能源科技有限公司 | Battery heating assembly and manufacturing process thereof |
| CN114126126A (en) * | 2021-12-14 | 2022-03-01 | 中国人民解放军第五七一九工厂 | Method for manufacturing induction coil and method for manufacturing inductor |
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Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |