CN106558415B - A kind of production method of nanocrystalline common mode inductance - Google Patents
A kind of production method of nanocrystalline common mode inductance Download PDFInfo
- Publication number
- CN106558415B CN106558415B CN201611022643.1A CN201611022643A CN106558415B CN 106558415 B CN106558415 B CN 106558415B CN 201611022643 A CN201611022643 A CN 201611022643A CN 106558415 B CN106558415 B CN 106558415B
- Authority
- CN
- China
- Prior art keywords
- nanocrystalline
- common mode
- mode inductance
- production method
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
- Coils Or Transformers For Communication (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
A kind of production method of nanocrystalline common mode inductance, is related to inductive technologies field, is 38mm, internal diameter 22mm, the highly Nanocrystalline core for 13mm by the way that nanocrystalline strip is coiled into an outer diameter；The Nanocrystalline core is placed in vacuum annealing furnace and is heat-treated；Nanocrystalline core after Overheating Treatment is cured and aging with epoxy resin；By curing protecting box will be put into the Nanocrystalline core after aging；Uniformly complete the coil of two windings on the both sides of the protecting box of Nanocrystalline core respectively with two enameled wires; and then complete the making of nanocrystalline common mode inductance; pass through the heat treatment method especially set; inductance can be made more than 15mH; outside dimension is less than 48mm; thickness is less than the nanocrystalline common mode inductance of 28mm, realizes that inductance value is big, the small purpose of size.
Description
Technical field
The present invention relates to inductive technologies field, more particularly to a kind of production method of nanocrystalline common mode inductance.
Background technology
With the trend that technology develops, the common mode inductance device in electronic component becomes to directions such as miniaturization, lightweights
Leather, but existing technique is difficult to obtain balance, the big inductance of inductance value, volume between the miniaturization of inductance and inductance value
Corresponding also larger, the small inductance of inductance value, volume is corresponding also smaller, it is difficult to accomplish that inductance value is big, volume is smaller.
The content of the invention
A kind of operating current is provided as 15A it is an object of the invention to avoid shortcoming of the prior art, inductance
More than 15mH, outside dimension is less than 48mm, the production method of nanocrystalline common mode inductance of the thickness less than 28mm.
The purpose of the present invention is achieved through the following technical solutions：
A kind of production method of nanocrystalline common mode inductance is provided, is included the following steps：
Step 1：Nanocrystalline strip is coiled into an outer diameter as 38mm, internal diameter 22mm, highly the nanocrystalline magnetic for 13mm
Ring；
Step 2：The Nanocrystalline core is placed in vacuum annealing furnace and is heat-treated；
Step 3：Nanocrystalline core after Overheating Treatment is cured and aging with epoxy resin；
Step 4：By curing protecting box will be put into the Nanocrystalline core after aging；
Step 5：Uniformly complete the line of two windings on the both sides of the protecting box of Nanocrystalline core respectively with two enameled wires
Circle, and then complete the making of nanocrystalline common mode inductance；
Wherein, the heat treatment method of step 2 is specifically：
A) 120 minutes are passed through in-furnace temperature from room temperature to 653K；
B) in 653K heat preservations after twenty minutes, it was warming up to 763K with 36 minutes；
C) in 763K heat preservations after forty minutes, it was warming up to 803K with 13 minutes；
D) in 803K heat preservations after sixty minutes, it was warming up to 838K with 12 minutes；
E) in 838K heat preservations after forty minutes, bonnet high wind is exited furnace body temperature dramatic decrease to 353K, opens firedoor handle
Nanocrystalline core takes out；
F) Nanocrystalline core taken out out of stove is placed on cooling frame again with high wind rapid cooling to room temperature.
Wherein, before heat treatment：Nanocrystalline core is placed in the effective uniform temperature zone of vacuum annealing furnace, fire door is locked, opens
Enable the cooling water for the sealing ring in the power supply for heating and vacuumizing, opening to cool down fire door, in stove vacuum degree remain less than-
0.1Mpa comes out of the stove to Nanocrystalline core.
Wherein, the model PUE of the enameled wire, heatproof are 155 DEG C, a diameter of 2.0mm.
Wherein, the step 4 curing and aging be specifically：Single Nanocrystalline core is sprayed epoxy resin, is put into
It is warming up to 85 DEG C of baking oven inside holding and carries out within 40 minutes curing aging process, be put into outside baking oven and naturally cooled to often after the completion of heat preservation
Temperature.
Wherein, Nanocrystalline core threading protecting box is specifically by the step 4：Office on the bottom cover of plastic cement protecting box
Portion is injected
The special silicone grease of amorphous, then the Nanocrystalline core after curing aging is packed into the bottom cover in plastic cement protecting box, finally
Cover the cover of plastic cement protecting box.
Wherein, the special silicone grease of amorphous that point 3 points of injection dosages are about 0.3g on the bottom cover of the plastic cement protecting box.
Wherein, two groups of coils of the step 5, wherein every group of coil, around 12 circles, point two layers of coiling, first layer is around 7 circles
Afterwards, the second layer unrolls 5 circles toward starting point.
Wherein, the step 5 further includes：Successively coil pin depainting, upper tin is put epoxy resin and is fixed, pin is cut
To appropriate length, test inductance value is more than 15mH.
Wherein, the step 1 specifically includes：The core mold of a diameter of 22mm is installed in amorphous sutomatic winding machine,
The iron based nano crystal band of 13mm long be wound into an outer diameter be 38mm, internal diameter 22mm, be highly 13mm Nanocrystalline core.
Wherein, the step 1 specifically further includes：Detect the elasticity of amorphous magnet ring：External force is from perpendicular to Nanocrystalline core
Bandwidth direction Nanocrystalline core compressive strain, after releasing external force, the height dimension of the Impact direction of magnet ring can recover to big
In not before by external force 80%.
Beneficial effects of the present invention：
The present invention is 38mm, internal diameter 22mm, the highly nanometer for 13mm by the way that nanocrystalline strip is coiled into an outer diameter
Brilliant magnetic
Ring；The Nanocrystalline core is placed in vacuum annealing furnace and is heat-treated；The nanocrystalline magnetic after Overheating Treatment
Ring is cured with epoxy resin and aging；By curing protecting box will be put into the Nanocrystalline core after aging；With two paints
Envelope curve uniformly completes the coil of two windings on the both sides of the protecting box of Nanocrystalline core respectively, and then completes nanocrystalline common mode electricity
The making of sense；Wherein, heat treatment method is specifically：By 120 minutes in-furnace temperature from room temperature to 653K；It is protected in 653K
Temperature after twenty minutes, 763K was warming up to 36 minutes；In 763K heat preservations after forty minutes, it was warming up to 803K with 13 minutes；It is protected in 803K
Temperature after sixty minutes, 838K was warming up to 12 minutes；838K heat preservation after forty minutes, exit bonnet high wind furnace body temperature rapidly under
353K is down to, firedoor handle Nanocrystalline core is opened and takes out；The Nanocrystalline core taken out out of stove is placed on cooling frame again with strong
Wind rapid cooling is to room temperature, so that it may inductance be made and be more than 15mH, outside dimension is less than 48mm, and thickness is less than the nanocrystalline common mode of 28mm
Inductance realizes that inductance value is big, the small purpose of size.
Description of the drawings
Invention is described further using attached drawing, but the embodiment in attached drawing does not form any limitation of the invention,
For those of ordinary skill in the art, without creative efforts, can also it be obtained according to the following drawings
Its attached drawing.
Fig. 1 is a kind of structure diagram of the production method of nanocrystalline common mode inductance of the present invention.
Include in Fig. 1：
Nanocrystalline core 1；
PBT plastic cement protecting box 2；
Coil 3.
Specific embodiment
The invention will be further described with the following Examples.
A kind of production method of nanocrystalline common mode inductance of the present embodiment, includes the following steps：
Step 1：The core mold of a diameter of 22mm is installed in amorphous sutomatic winding machine, the iron based nano crystal of 13mm long
Band be wound into an outer diameter be 38mm, internal diameter 22mm, be highly 13mm Nanocrystalline core 1.
Then, the elasticity of amorphous magnet ring is detected：External force is from the direction of the bandwidth perpendicular to Nanocrystalline core 1 nanocrystalline
Magnet ring 1
Compressive strain, after releasing external force, the height dimension of the Impact direction of magnet ring can recover to more than not before by external force
80%, this step can eliminate the internal stress of magnet ring, and then can save subsequent handling.
Step 2：The Nanocrystalline core 1 is placed in vacuum annealing furnace and is heat-treated：Nanocrystalline core 1 is placed on very
Sky moves back
In the effective uniform temperature zone of stove, fire door is locked, the power supply for heating and vacuumizing is opened, opens to cool down
The cooling water of the sealing ring of fire door, vacuum degree remains less than -0.1Mpa and comes out of the stove to Nanocrystalline core 1 in stove,
A) 120 minutes are passed through in-furnace temperature from room temperature to 653K；
B) in 653K heat preservations after twenty minutes, it was warming up to 763K with 36 minutes；
C) in 763K heat preservations after forty minutes, it was warming up to 803K with 13 minutes；
D) in 803K heat preservations after sixty minutes, it was warming up to 838K with 12 minutes；
E) in 838K heat preservations after forty minutes, bonnet high wind is exited furnace body temperature dramatic decrease to 353K, opens firedoor handle
Nanocrystalline core 1 takes out；
f）The Nanocrystalline core 1 taken out out of stove is placed on cooling frame again with high wind rapid cooling to room temperature.
Step 3：Nanocrystalline core 1 after Overheating Treatment is cured and aging with epoxy resin：Single nanometer
Brilliant magnet ring 1 sprays epoxy resin, is put into have warmed up to 85 DEG C of baking oven inside holding and carries out curing aging process in 40 minutes, has kept the temperature
It is put into after outside baking oven and naturally cools to room temperature.
Step 4：By curing protecting box will be put into the Nanocrystalline core 1 after aging:First length be 38mm, width
For 22mm, highly on the bottom cover for the PBT plastic cement protecting box 2 of 14mm, divide the amorphous silicon special that 3 points of injection dosages are about 0.3g
Fat, then the Nanocrystalline core 1 after aging is packed into the cover that PBT plastic cement protecting box 2 in bottom cover, is finally covered in shield box, test
Inductance value is not less than 110 μ H.
The main effect of above step three and step 4 is that magnet ring is allowed to be not affected or less affected by external carbuncle in coiling to influence magnetic
Performance.
Step 5：With two enameled wires respectively in uniform two windings of completion in the both sides of the protecting box of Nanocrystalline core 1
Coil 3, wherein every group of coil 3 be around 12 circles, point two layers of coiling, first layer is after 7 circles, and the second layer unrolls 5 circles toward starting point, then
Successively 3 pin depainting of coil, upper tin is put epoxy resin and is fixed, and pin is cut appropriate length, test inductance value is more than
15mH。
Wherein, the model PUE of the enameled wire, heatproof are 155 DEG C, and a diameter of 2.0mm, PUE are the type of enameled wire,
Such enameled wire is higher temperature line, is resistant to 155 DEG C, can ensure that, when there is bracing wire, easy damaged is not allowed in bending place using higher temperature line
Coat of paint.
Nano crystal soft magnetic material used in common mode inductance has the advantage that compared with other soft magnetic materials：
1st, there is high magnetic flux density about 1.25T, can effectively reduce core cross section product；
2nd, there is high magnetic permeability about more than 80000, it is possible to reduce the number of turn of winding；
3rd, there is high insertion loss；
4th, it is 50Hz-100KHz to have good frequency characteristic；
5th, there is about 580 DEG C of high-curie temperature；
6th, there is excellent temperature characterisitic, can be in -55 DEG C~125 DEG C temperature ranges, inductance value is held essentially constant.
Inductance can be made more than 15mH by above method in the present embodiment, and outside dimension is less than 48mm, and thickness is less than
The nanocrystalline common mode inductance of 28mm, as shown in Figure 1, it can be achieved that inductance value is big, the small purpose of size.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, those of ordinary skill in the art should
Work as understanding, technical scheme can be modified or replaced equivalently, without departing from the reality of technical solution of the present invention
Matter and scope.
Claims (10)
1. a kind of production method of nanocrystalline common mode inductance, it is characterised in that：Include the following steps：
Step 1：Nanocrystalline strip is coiled into an outer diameter as 38mm, internal diameter 22mm, highly the Nanocrystalline core for 13mm；
Step 2：The Nanocrystalline core is placed in vacuum annealing furnace and is heat-treated；
Step 3：Nanocrystalline core after Overheating Treatment is cured and aging with epoxy resin；
Step 4：By curing protecting box will be put into the Nanocrystalline core after aging；
Step 5：Uniformly complete the coil of two windings on the both sides of the protecting box of Nanocrystalline core respectively with two enameled wires,
And then complete the making of nanocrystalline common mode inductance；
Wherein, the heat treatment method of step 2 is specifically：
By 120 minutes in-furnace temperature from room temperature to 653K；
In 653K heat preservations after twenty minutes, it was warming up to 763K with 36 minutes；
In 763K heat preservations after forty minutes, it was warming up to 803K with 13 minutes；
In 803K heat preservations after sixty minutes, it was warming up to 838K with 12 minutes；
In 838K heat preservations after forty minutes, bonnet high wind is exited furnace body temperature dramatic decrease to 353K, and it is nanocrystalline to open firedoor handle
Magnet ring takes out；
The Nanocrystalline core taken out out of stove is placed on cooling frame again with high wind rapid cooling to room temperature.
2. a kind of production method of nanocrystalline common mode inductance as described in claim 1, it is characterised in that：The heat treatment of step 2
Before：Nanocrystalline core is placed in the effective uniform temperature zone of vacuum annealing furnace, fire door is locked, opens what is heated and vacuumize
Power supply, opens to cool down the cooling water of the sealing ring of fire door, and vacuum degree remains less than -0.1Mpa and goes out to Nanocrystalline core in stove
Stove.
3. a kind of production method of nanocrystalline common mode inductance as described in claim 1, it is characterised in that：The type of the enameled wire
Number for PUE, heatproof is 155 DEG C, a diameter of 2.0mm.
4. a kind of production method of nanocrystalline common mode inductance as described in claim 1, it is characterised in that：The step 4 is consolidated
Change and aging is specifically：Single Nanocrystalline core is sprayed epoxy resin, puts to 85 DEG C of baking oven inside holding and is consolidated for 40 minutes
Change aging process, be put into after the completion of heat preservation outside baking oven and naturally cool to room temperature.
5. a kind of production method of nanocrystalline common mode inductance as described in claim 1, it is characterised in that：The step 4 will be received
The brilliant magnet ring of rice puts into protecting box and is specifically：The special silicone grease of amorphous is locally implanted on the bottom cover of plastic cement protecting box, then curing
Nanocrystalline core after aging is packed into the bottom cover of plastic cement protecting box, finally covers the cover of plastic cement protecting box.
6. a kind of production method of nanocrystalline common mode inductance as claimed in claim 5, it is characterised in that：It is protected in the plastic cement
The special silicone grease of amorphous that point 3 points of injection dosages are about 0.3g on the bottom cover of box.
7. a kind of production method of nanocrystalline common mode inductance as described in claim 1, it is characterised in that：The two of the step 5
Group coil, wherein every group of coil be around 12 circles, point two layers of coiling, after 7 circles, the second layer unrolls 5 circles first layer toward starting point.
8. a kind of production method of nanocrystalline common mode inductance as described in claim 1, it is characterised in that：The step 5 is also wrapped
It includes：Successively coil pin depainting, upper tin is put epoxy resin and is fixed, and pin is cut appropriate length, test inductance value is more than
15mH。
9. a kind of production method of nanocrystalline common mode inductance as described in claim 1, it is characterised in that：The step 1 is specific
Including：The core mold of a diameter of 22mm is installed in amorphous sutomatic winding machine, the iron based nano crystal band of 13mm long is wound into
One outer diameter is 38mm, internal diameter 22mm, be highly 13mm Nanocrystalline core.
10. a kind of production method of nanocrystalline common mode inductance as claimed in claim 9, it is characterised in that：The step 1 tool
Body further includes：Detect the elasticity of amorphous magnet ring：External force is from the direction of the bandwidth perpendicular to Nanocrystalline core Nanocrystalline core
Compressive strain, after releasing external force, the height dimension of the Impact direction of magnet ring can recover to more than not before by external force 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611022643.1A CN106558415B (en) | 2016-11-21 | 2016-11-21 | A kind of production method of nanocrystalline common mode inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611022643.1A CN106558415B (en) | 2016-11-21 | 2016-11-21 | A kind of production method of nanocrystalline common mode inductance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106558415A CN106558415A (en) | 2017-04-05 |
| CN106558415B true CN106558415B (en) | 2018-05-25 |
Family
ID=58444477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611022643.1A Active CN106558415B (en) | 2016-11-21 | 2016-11-21 | A kind of production method of nanocrystalline common mode inductance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106558415B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107025987A (en) * | 2017-05-26 | 2017-08-08 | 云南电网有限责任公司电力科学研究院 | A kind of distribution transformer and core manufacturing method with iron based nano crystal iron core |
| CN107345265B (en) * | 2017-06-22 | 2019-08-09 | 东莞市大忠电子有限公司 | A kind of annealing process for the remanent magnetism reducing nanocrystalline magnet core |
| CN107393671B (en) * | 2017-06-22 | 2019-04-30 | 东莞市大忠电子有限公司 | A kind of iron based nanocrystalline magnet core and preparation method thereof |
| CN107393672B (en) * | 2017-06-22 | 2020-03-17 | 东莞市大忠电子有限公司 | Iron-nickel-based nanocrystalline magnetic core and preparation method thereof |
| CN107393674B (en) * | 2017-08-16 | 2020-06-23 | 贵州鑫湄纳米科技有限公司 | Iron-based nano amorphous magnetic core and application thereof |
| CN109599262A (en) * | 2018-12-20 | 2019-04-09 | 北流市柯顺电子有限公司 | A kind of method that common mode inductance magnetic core restores impedance value |
| CN109755013A (en) * | 2019-01-25 | 2019-05-14 | 河南中汇致简电子科技有限公司 | A kind of common mode inductance manufacturing process |
| CN110136923A (en) * | 2019-05-31 | 2019-08-16 | 咸阳辉煌电子磁性材料研究所 | A kind of amorphous nano-crystalline magnet ring of epoxy powder coating and preparation method thereof |
| CN110189910A (en) * | 2019-07-02 | 2019-08-30 | 洛阳中赫非晶科技有限公司 | A kind of energy-saving annealing process of amorphous-ultramicro-crystal alloy choke coil magnet ring |
| CN112326714A (en) * | 2020-10-28 | 2021-02-05 | 北京北冶功能材料有限公司 | Device and method for measuring Curie temperature of magnetic material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360768A (en) * | 2011-11-04 | 2012-02-22 | 安泰科技股份有限公司 | Amorphous iron core, manufacturing method thereof and transformer with high performance, low noise and low cost |
| CN102363830A (en) * | 2011-10-26 | 2012-02-29 | 青岛云路新能源科技有限公司 | Heat treatment method for ultracrystalline magnetic core |
| CN202695058U (en) * | 2012-07-20 | 2013-01-23 | 贵阳顺络迅达电子有限公司 | Surface-mounted type common-mode filter inductor |
| CN104200982A (en) * | 2014-03-28 | 2014-12-10 | 北京冶科磁性材料有限公司 | Manufacturing method of nanocrystalline magnetic core for high-frequency electrostatic dust collection power transformer |
| CN104576017A (en) * | 2013-10-25 | 2015-04-29 | 上海米创电器有限公司 | Manufacturing method of amorphous alloy iron core for transformer with high saturation magnetization and low loss |
-
2016
- 2016-11-21 CN CN201611022643.1A patent/CN106558415B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363830A (en) * | 2011-10-26 | 2012-02-29 | 青岛云路新能源科技有限公司 | Heat treatment method for ultracrystalline magnetic core |
| CN102360768A (en) * | 2011-11-04 | 2012-02-22 | 安泰科技股份有限公司 | Amorphous iron core, manufacturing method thereof and transformer with high performance, low noise and low cost |
| CN202695058U (en) * | 2012-07-20 | 2013-01-23 | 贵阳顺络迅达电子有限公司 | Surface-mounted type common-mode filter inductor |
| CN104576017A (en) * | 2013-10-25 | 2015-04-29 | 上海米创电器有限公司 | Manufacturing method of amorphous alloy iron core for transformer with high saturation magnetization and low loss |
| CN104200982A (en) * | 2014-03-28 | 2014-12-10 | 北京冶科磁性材料有限公司 | Manufacturing method of nanocrystalline magnetic core for high-frequency electrostatic dust collection power transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106558415A (en) | 2017-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106558415B (en) | A kind of production method of nanocrystalline common mode inductance | |
| CN108998633B (en) | Heat treatment method of amorphous nanocrystalline magnetic core | |
| CN103985498B (en) | Electromagnetic coil production process | |
| US20130219700A1 (en) | Amorphous Metal Continuous Flux Path Transformer and Method of Manufacture | |
| CN103390492B (en) | A kind of production technology of the ultracrystallite cutting iron core of open-close type transformer | |
| CN102965478A (en) | Heat treatment method for iron-based amorphous strip | |
| CN109559883B (en) | Preparation method of soft magnetic alloy iron core with high and low temperature stability | |
| CN104775014A (en) | Heat treatment method of amorphous/microcrystalline iron-base magnetic cores | |
| CN106298218A (en) | A kind of rectangle amorphous nano-crystalline magnetic core and preparation method thereof | |
| CN101409123A (en) | Soft magnetic ferrite material, inductor and manufacturing technology | |
| CN102676757A (en) | Annealing process of amorphous alloy transformer core | |
| CN102737829B (en) | Heat treatment process of low-loss amorphous alloy iron core for transformer | |
| CN104269264A (en) | Oil-immersed type amorphous alloy transformer core crack prevention and noise reduction technology | |
| CN114300249A (en) | Manufacturing method of high-power composite molding inductor | |
| CN117038306A (en) | Nanocrystalline magnetic core and preparation method thereof | |
| CN103296811A (en) | Interturn insulating structure of super-thin 6kV high-voltage motor and manufacturing method of interturn insulating structure | |
| CN106409491A (en) | High-magnetic shielding communication transformer and production method thereof | |
| CN101685705B (en) | Double-protection-box oppositely-clamping iron-based amorphous alloy band magnet core | |
| CN108899152A (en) | A kind of more insulating layer iron silicon substrate soft magnetic-powder cores and preparation method thereof | |
| US20150380148A1 (en) | Methods and systems for forming amorphous metal transformer cores | |
| CN104917320A (en) | 6KV high-voltage motor shaped coil and processing method thereof. | |
| WO2020056786A1 (en) | Varnishing process for electromagnet coil | |
| CN203339831U (en) | Interturn insulating structure of super-thin 6kV high-voltage motor and insulating system comprising same | |
| CN106910567B (en) | Enamel-cover twisted wire preparation technology, enamel-cover twisted wire and transformer | |
| CN214327800U (en) | Annealing and vacuumizing device for iron core of mutual inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |