CN206312753U - A kind of particular manufacturing craft of high frequency transformer iron core - Google Patents
A kind of particular manufacturing craft of high frequency transformer iron core Download PDFInfo
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- CN206312753U CN206312753U CN201720029580.6U CN201720029580U CN206312753U CN 206312753 U CN206312753 U CN 206312753U CN 201720029580 U CN201720029580 U CN 201720029580U CN 206312753 U CN206312753 U CN 206312753U
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Abstract
The utility model provides a kind of particular manufacturing craft of high frequency transformer iron core, the outer clamping die clamped including the interior hold mode for hole forming in iron core and for iron core outside, the interior hold mode includes four angle braces and four faggings for the control rectangle iron core length of side for the shaping of iron core inside lock, and each fagging is supported on composition and forming iron in-core hole identical rectangular shape between two adjacent angle braces.The utility model can realize supporting the frock clamp of various nanocrystalline iron cores of different size, and low cost using the particular manufacturing craft that split is set by simple operations；Automatically disengaging for winding core and iron core can be realized using the winding core with beveling binding face, can be instant rolled around nanocrystalline strip, and the winding core easily removed；Need not be measured after iron core forming, can reach the size of iron core requirement, and cored dimensional accuracy is high, uniformity is good.
Description
Technical field
The utility model is related to core technology field, more particularly to a kind of particular manufacturing craft of high frequency transformer iron core.
Background technology
Transformer core is the magnetic conductive component inside power transformer, and existing magnetic core for transformer material substantially has three
Kind：Silicon steel sheet, ferrite and nanocrystalline, the above two are the manufacture most common materials of magnetic core, but with development in science and technology, many occasions
(such as power plant dedusting, cement plant dedusting) needs to use high-power high-frequency high-voltage power supply, transformer core is proposed higher
Requirement, particularly iron core power consumption, temperature rise, noise turn into the important quality index of iron core.
Silicon sheet core is only suitable for the low-frequency transformer of below 400Hz；Ferrite Material is due to its saturation induction density
It is too low to cause core volume and weight very big, it is difficult to power is done greatly, while also having that temperature stability is poor, inefficiency asking
Topic；It is cobalt base amorphous to be provided with good electromagnetic performance, but its price and its costliness with permalloy, if for industrial products into
This is too high.
Iron based nano crystal (ultracrystallite) material is to add the elements such as a small amount of niobium, boron, copper, silicon by base material of iron, through over-quenching
Prepared by technique has thickness less than the thin slice dress band of 0.025mm, has small volume, the small, frequency of loss after being fabricated to iron core
The features such as wide ranges, while the performance and stability of iron core also have very remarkable performance, high-frequency and high-voltage has been widely used in it
Electrostatic precipitation industry, typically using the nanocrystalline strip of 30mm~100mm width, this kind of iron core is rectangle frame design at present,
With nano-crystalline thin ribbon by winding ring-type iron core, then it is molded with hold mode, then passes through the handling process systems such as heat treatment, solidifying and setting
Into finished product iron core.
Some problems that existing product is present are as follows：
A) winding mold of Wound core generally uses the real swage coiling with predetermined outer diameter in industry, because high-frequency and high-voltage becomes
The general weight of depressor iron core is in 0.5Kg~50Kg or so, and volume is larger, causes the iron core for winding smooth cannot take out, operation
It is difficult.
B) because nanocrystalline iron core is also unformed currently without formation national standard, or even professional standard, cause even
The transformer of Same Efficieney design is also different to the specifications design of iron core, and fabrication of iron core is molded the frock clamp used
Cannot realize repeating to recycle, cause the very big wasting of resources and repetitive operation.
C) simultaneously as nanocrystalline lamination has certain lamination coefficient, when causing iron core forming to clamp, due to cannot be accurate
The width in the upper and lower two folded faces of iron core is really measured, so as to the phenomenon for bringing iron core to crook, to the outward appearance and stability of product
Bring very big puzzlement.
Utility model content
Technical problem to be solved in the utility model is：In order to overcome deficiency of the prior art, the utility model is carried
For a kind of particular manufacturing craft of high frequency transformer iron core.
The arc radius at four angles of the endoporus of rectangle high frequency transformer iron core are substantially identical, and whole iron core is only
Ensure that endoporus four arc radius at angle it is accurate, then the shape of its whole product is assured that, various sizes of
Rectangle high frequency transformer iron core is only in structure the in different size of the length of side.Therefore, particular manufacturing craft root of the present utility model
According to These characteristics, it is only necessary to provide the mould that can be adapted to various length of sides, it is possible to the need for meeting plurality of specifications product.
Based on above-mentioned design, the utility model solves its technical problem technical scheme to be taken is：A kind of high frequency becomes
The particular manufacturing craft of depressor iron core, including the interior hold mode for hole forming in iron core and the outer clamping die for the clamping of iron core outside,
The iron core is placed in and rectangle iron core is shaped between the interior hold mode and outer clamping die, and the interior hold mode is included for turning in iron core
Four angle braces and four faggings for the control rectangle iron core length of side of angle shaping, each fagging are supported on two adjacent angle braces
Between composition with forming iron in-core hole identical rectangular shape.Regular length in the prior art be can be only done into single specification
The frock clamp of iron core forming is improved, according to the characteristics of rectangle iron core, the mould of interior hole forming being divided into angle after shaping
Support and fagging, the mould and the mould split of control length for making corner are set, when the rectangle iron core of different size is molded, only
The fagging of replacing different length is needed, without interior hold mode is all changed, the recycling of frock clamp is realized.
Specifically, the structure of four angle braces is identical, the angle brace is that turning is the L-shaped column at right angle, and the L-shaped is stood
The outer right angle of post is that radius is the arc surface of R, and the arc surface both sides are tangent with two lateral surfaces of L-shaped column, the L
The both ends of shape column are provided with fagging slot；The fagging is rectangle column, and rectangle column two ends are provided with and fagging slot
The inserted block matched somebody with somebody, the inserted block is plugged in slot, and the slot has the confined planes that the limitation inserted block is drawn close to center.Angle
Support and fagging are installed by way of plug, simple and fast, and limit the position between angle brace and fagging by confined planes
Put relation, it is ensured that the shape of interior hold mode, improve the formed precision of rectangle iron core.
Further, for the ease of making inserted block insert in slot, the edge of the slot and inserted block upper and lower ends is equipped with down
Angle transition face.Carrying out spacing guiding by chamfered transition face can realize quick insertion.
Specifically, the outer clamping die includes four L-shaped external angle plates, four external splints and for connecting two neighboring exterior angle
The pulling assembly of plate, four external splints are in turn connected to form the rectangle matched with shaping iron core appearance and size, outside four L-shaped
Gusset is press respectively against on four outer corners of the rectangle of external splint formation, and the outer clip of both sides is pushed down at L-shaped external angle plate two ends respectively
Plate, the pulling assembly two ends are connected with rectangle with two L-shaped external angle plates on one side respectively；The pulling assembly includes the gaily decorated basket
Bolt and the bulge loop for being arranged on L-shaped external angle plate end, the hook at the flower basket bolt two ends are hooked in rectangle with two L on one side
In the bulge loop of shape external angle plate.Outer clamping die is also adopted by the structure of split, can be realized not by configuring the external splint of different length
The shaping of the rectangle iron core of same specification；The carrying out between two neighboring outer corner is locked using flower basket bolt, by gaily decorated basket spiral shell
Bolt can conveniently adjust coupling mechanism force, and lock speed soon, improve shaping efficiency.
A kind of manufacture method of high frequency transformer iron core, it is characterised in that：Using above-mentioned particular manufacturing craft, specifically include with
Lower step,
Step 1：According to the suitable nanocrystalline strip of iron core requirement selection, fagging and external splint, then by the nanocrystalline band of n-layer
Material is wound into the iron core of annular in private volume on core, and ensures Wound core to formulation thickness；
Step 2：After coiling iron core is good, removed from winding core, iron core is substantially then shaped as rectangular shape, will
Four angle braces of interior hold mode are individually placed to the corner of iron core endoporus, and are correspondingly placed into corresponding size between two neighboring angle brace
Fagging, makes iron core basic forming；The external splint correspondence of given size is put in four stems outside of the iron core of basic forming, so
Four L-shaped external angle plates are respectively placed in four outer corners of iron core afterwards, L-shaped external angle plate edge should push down external splint, finally, point
The hook at flower basket bolt two the bulge loop on L-shaped external angle plate is not caught on into, iron core forming after locking；
Step 3：Nanocrystalline rectangle iron core with interior hold mode and outer clamping die is put into dielectric heating oven uniformly to heat, with
10 DEG C per minute of speed is heated up, and control furnace temperature is per minute with 20 DEG C again after being kept for three hours at 400 DEG C~600 DEG C
Speed is cooled to 100 DEG C, the magnetic core that taking-up has been heat-treated；
Step 4：Iron core is completely infused in the modified epoxy containing curing agent by vacuum impregnation equipment, make to contain
The modified epoxy for having curing agent is sufficient filling with the bedding void of nanocrystalline iron core, is taken out after the completion of impregnation and dries magnetic core；
Step 5：Magnetic core is put into baking oven, solidifying and setting 8 hours at 80 DEG C -150 DEG C, iron core is processed after taking out cooling
Into.
Preferably, in step 1 simultaneously winding nanocrystalline strip number of plies n >=2, will nanocrystalline strip overlap two-by-two or
Band more than two-layer is overlapped and wound simultaneously.It is general make iron core be all with individual layer band Wound core, the utility model proposes
Nanocrystalline strip is overlapped two-by-two or two-layer more than band overlap winding, can not only improve winding efficiency but also iron can have been increased
The lamination coefficient of core, additionally it is possible to be conducive to the control of core dimensions.
Further, private volume described in step 1 includes core rod and a fixing bolt that two splits are set, institute around core
State core rod and be provided with inclination binding face, fixed to form circular core with bolt-through after the core rod binding face laminating, and bolt
Axis overlaps with the circular core mold shaft line, and binding face intersects and with certain angle with circular core mold shaft line.Winding core
Mould is combined for two structure identical split core rods, two split core rods possess using a bolt through after fixed i.e.
The characteristics of for a round mould.Using two and half core rods of beveling, after the bolt for disassembling center, inclining binding face can be by iron
Core is converted to axial force to the radial load of core rod, core rod is quickly removed.
The beneficial effects of the utility model are：The utility model provide a kind of high frequency transformer iron core manufacture method and
Its particular manufacturing craft, the particular manufacturing craft set using split can be realized supporting various different size nano crystal irons by simple operations
The frock clamp of core, and low cost；Can realize winding oneself of core and iron core using the winding core with beveling binding face
It is dynamic to depart from, can be instant rolled around nanocrystalline strip, and the winding core easily removed；Need not be measured after iron core forming, i.e.,
Can reach the size of iron core requirement, and cored dimensional accuracy is high, uniformity is good.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of rectangle high frequency transformer iron core；
Fig. 2 is the structural representation of rectangle high frequency transformer iron core；
Fig. 3 is the structural representation of rectangle high frequency transformer iron core；
Fig. 4 is the structural representation of forming frock in the prior art；
Fig. 5 is the structural representation of particular manufacturing craft of the present utility model；
Fig. 6 is the structural representation of particular manufacturing craft of the present utility model；
Fig. 7 is the structural representation of angle brace；
Fig. 8 is the structural representation for winding core.
In figure：10th, iron core, 11, rectangle endoporus, 3, outer U-shaped body, 4, interior U-shaped body, 4-1, gap, 5, pillar, 5-1, spiral shell
Cap, 6, inner supporting frame, 7, bolt, 8, folding ear, 20, angle brace, 21, fagging, 22, external angle plate, 23, external splint, 24, flower basket bolt, 25,
Bulge loop, 26, hook, 27, arc surface, 28, slot, 30, lower mold core, 31, upper mold core, 32, bolt, 33, base plate.
Specific embodiment
The utility model is described in detail presently in connection with accompanying drawing.This figure is simplified schematic diagram, only in a schematic way
Basic structure of the present utility model is illustrated, therefore it only shows the composition relevant with the utility model.
As Figure 1-3, a kind of rectangle high frequency transformer iron core that the utility model is related to, iron core 10 includes rectangle endoporus
11, four radiuses of corner of rectangle endoporus 11 are R, wherein, A represents the length of rectangle endoporus 11, and B represents rectangle endoporus 11
Width, C represents the width of rectangle iron core 10, and D represents the thickness of rectangle iron core 10.
As shown in figure 4, the forming frock of rectangle high frequency transformer iron core 10 of the prior art, including square internal model and side
Type external mold, square internal model includes the interior body frame and an inner supporting frame 6 that are made up of U-shaped body 4 in two, the inwall of the interior U-shaped body 4 and
Connected by the pillar 5 with nut 5-1 between the outer wall of inner supporting frame 6, turn nut 5-1 can extend the length of pillar 5, be used for
Adjust the distance of the gap 4-1 in two between U-shaped body 4.Square external mold is made up of an external U-shaped body 3, the two-arm of outer U-shaped body 3
End is provided with folding ear 8, and locking is connected by bolt 7 between two U-shaped body correspondence folding ears 8.
As illustrated in figs. 5-7, the particular manufacturing craft of a kind of high frequency transformer iron core of the present utility model, including in iron core 10
The interior hold mode of hole forming and the outer clamping die clamped for the outside of iron core 10, the iron core 10 are placed in the interior hold mode and outer clamping
Rectangle iron core 10 is shaped between mould, the interior hold mode is included for four angle braces 20 of the inside lock of iron core 10 shaping and for controlling
Four faggings 21 of the length of side of rectangle iron core processed 10, each fagging 21 is supported on composition and shaping between two adjacent angle braces 20
The endoporus identical rectangular shape of iron core 10.By the work that single specification iron core 10 is molded that can be only done of regular length in the prior art
Clamps are improved, and according to the characteristics of rectangle iron core after shaping 10, the mould of interior hole forming are divided into angle brace 20 and fagging
21, the mould and the mould split of control length for making corner are set, when the rectangle iron core 10 of different size is molded, it is only necessary to
The fagging 21 of different length is changed, without interior hold mode is all changed, the recycling of frock clamp is realized.
Specifically, the structure of four angle braces 20 is identical, the angle brace 20 is that turning is the L-shaped column at right angle, the L
The outer right angle of shape column is that radius is the arc surface 27 of R, and the both sides of the arc surface 27 are homogeneous with two lateral surfaces of L-shaped column
Cut, the both ends of the L-shaped column are provided with the slot 28 of fagging 21；The fagging 21 is rectangle column, and rectangle column two ends set
There is the inserted block matched with the slot 28 of fagging 21, the inserted block is plugged in slot 28, and the slot 28 has limitation described slotting
The confined planes that Kuai Xiang draws close at center.Angle brace 20 and fagging 21 are installed by way of plug, simple and fast, and by limit
Plane limits the position relationship between angle brace 20 and fagging 21, it is ensured that the shape of interior hold mode, improve rectangle iron core 10 into
Type precision.In the present embodiment, fagging 21 is T-shaped fagging 21 short in foreign minister, and angle brace 20 is straight using the L-shaped of both sides equal length
Corner post is processed, and the outer corner of L-shaped right angle column is processed into has the 1/4 of equal radii R with the endoporus corner of iron core 10
Arc surface 27, and make arc surface 27 be seamlessly transitted with two lateral surfaces of L-shaped right angle column, also, L-shaped right angle column both sides
End outside cut away the rectangular recess of and the complementation of T-shaped fagging 21, form the slot 28 for grafting.
For the ease of making inserted block insert in slot 28, the edge of the slot 28 and inserted block upper and lower ends is equipped with chamfering mistake
Cross face.Carrying out spacing guiding by chamfered transition face can realize quick insertion.
Specifically, the outer clamping die includes four L-shaped external angle plates, 22, four external splints 23 and two neighboring for connecting
The pulling assembly of external angle plate 22, four external splints 23 are in turn connected to form the rectangle matched with the shaping appearance and size of iron core 10, institute
Four L-shaped external angle plates 22 are stated to be press respectively against on four outer corners of the rectangle of the formation of external splint 23, and the two ends of L-shaped external angle plate 22
The external splint 23 of both sides is pushed down respectively, and the pulling assembly two ends connect with rectangle with two L-shaped external angle plates 22 on one side respectively
Connect；The pulling assembly includes flower basket bolt 24 and is arranged on the bulge loop 25 of the end of L-shaped external angle plate 22,24 liang of the flower basket bolt
The hook 26 at end is hooked in rectangle with two bulge loops of L-shaped external angle plate 22 25 on one side.Outer clamping die is also adopted by the knot of split
Structure, can be by configuring the shaping that the external splint 23 of different length realizes the rectangle iron core 10 of different size；Using flower basket bolt
24 lock the carrying out between two neighboring outer corner, can conveniently adjust coupling mechanism force by flower basket bolt 24, and lock speed
Degree is fast, improves shaping efficiency.
A kind of manufacture method of high frequency transformer iron core, it is characterised in that：Using above-mentioned particular manufacturing craft, specifically include with
Lower step,
Step 1：According to the suitable nanocrystalline strip of the requirement selection of iron core 10, fagging 21 and external splint 23, then n-layer is received
Rice crystal zone material is wound into the iron core 10 of annular in private volume on core, and ensures Wound core 10 to formulation thickness；Simultaneously
Number of plies n >=2 of the nanocrystalline strip of winding, will nanocrystalline strip overlap two-by-two or two-layer more than band overlap simultaneously roll up
Around.The general iron core 10 that makes all is, with individual layer band Wound core 10, to be overlapped two-by-two the utility model proposes by nanocrystalline strip
Or band more than two-layer overlaps winding, can not only improve winding efficiency but also can increase the lamination coefficient of iron core 10, additionally it is possible to
Be conducive to the control of the size of iron core 10.
As shown in figure 8, the private volume includes core rod and a fixing bolt 32 that two splits are set around core, it is described
Core rod is provided with inclination binding face, and circular core, and bolt are formed through fixed with bolt 32 after the core rod binding face laminating
32 axis overlap with the circular core mold shaft line, and binding face intersects and with certain angle with circular core mold shaft line.Winding
Core is combined for two structure identical split core rods, and two core rods are upper mold core 31 and lower mold core 30, two split patterns
Core possesses the characteristics of being a round mould through after being fixed on base plate 33 using a bolt 32.Using the two and half of beveling
Core rod, after the bolt 32 at the center that disassembles, inclining binding face can be converted to axial force by iron core to the radial load of core rod, make
Core rod can be quickly removed.
Step 2：After the winding of iron core 10, removed from winding core, then iron core 10 is substantially shaped as the shape of rectangle
Four angle braces 20 of interior hold mode are individually placed to the corner of the endoporus of iron core 10 by shape, and correspondence is put between two neighboring angle brace 20
Enter the fagging 21 of corresponding size, make the basic forming of iron core 10；The correspondence of external splint 23 of given size is put in the iron of basic forming
Four stems outside of core 10, then four L-shaped external angle plates 22 are respectively placed in four outer corners of iron core 10, L-shaped exterior angle
The edge of plate 22 should push down external splint 23, finally, respectively catch on the hook 26 at the two of flower basket bolt 24 convex on L-shaped external angle plate 22
Ring 25, iron core 10 is molded after locking；
Step 3：Nanocrystalline rectangle iron core 10 with interior hold mode and outer clamping die is put into dielectric heating oven uniformly to heat,
Heated up with 10 DEG C per minute of speed, control furnace temperature is per minute with 20 DEG C again after being kept for three hours at 400 DEG C~600 DEG C
Speed be cooled to 100 DEG C, the magnetic core that taking-up has been heat-treated；
Step 4：Iron core 10 is completely infused in the modified epoxy containing curing agent by vacuum impregnation equipment, make
Modified epoxy containing curing agent is sufficient filling with the bedding void of nanocrystalline iron core 10, is taken out after the completion of impregnation and dries magnetic
Core；
Step 5：Magnetic core is put into baking oven, solidifying and setting 8 hours at 80 DEG C -150 DEG C, iron core 10 is processed after taking out cooling
Complete.
Amorphous ribbon is also referred to as amorphous material, by nanocrystalline (ultracrystallite) band can be formed after working process,
It can be still amorphous band.Therefore iron core of the present utility model and preparation method are applied to nanocrystalline (ultracrystallite) band, can
For amorphous band.
With above-mentioned according to desirable embodiment of the present utility model as enlightenment, by above-mentioned description, related work
Personnel can carry out various changes and amendments in the range of without departing from the utility model completely.This utility model
Technical scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (4)
1. a kind of particular manufacturing craft of high frequency transformer iron core, it is characterised in that：Including the inner support for iron core (10) interior hole forming
Mould and for iron core (10) outside clamp outer clamping die, the iron core (10) be placed between the interior hold mode and outer clamping die into
Type is rectangle iron core (10), and the interior hold mode is included for four angle braces (20) of iron core (10) inside lock shaping and for controlling
Four faggings (21) of rectangle iron core (10) length of side, each fagging (21) be supported between two adjacent angle braces (20) composition with
Shaping iron core (10) endoporus identical rectangular shape.
2. the particular manufacturing craft of high frequency transformer iron core as claimed in claim 1, it is characterised in that：Four angle braces (20)
Structure is identical, and the angle brace (20) is the L-shaped column at right angle for turning, and the outer right angle of the L-shaped column is that radius is the circle of R
Cambered surface (27), and the arc surface (27) both sides are tangent with two lateral surfaces of L-shaped column, the both ends of the L-shaped column set
There is fagging (21) slot (28)；The fagging (21) is rectangle column, and rectangle column two ends are provided with and fagging (21) slot
(28) inserted block of matching, the inserted block is plugged in slot (28), and the slot (28) is with limiting the inserted block to center
The confined planes drawn close.
3. the particular manufacturing craft of high frequency transformer iron core as claimed in claim 2, it is characterised in that：The slot (28) and inserted block
The edge of upper and lower ends is equipped with chamfered transition face.
4. the particular manufacturing craft of high frequency transformer iron core as claimed in claim 1 or 2, it is characterised in that：The outer clamping die bag
Include four L-shaped external angle plates (22), four external splints (23) and the pulling assembly for connecting two neighboring external angle plate (22), four
External splint (23) is in turn connected to form the rectangle matched with shaping iron core appearance and size, and four L-shaped external angle plates (22) are respectively
It is pressed on four outer corners of the rectangle of external splint (23) formation, and the outer clip of both sides is pushed down at L-shaped external angle plate (22) two ends respectively
Plate (23), the pulling assembly two ends are connected with rectangle with two L-shaped external angle plates (22) on one side respectively；The pulling assembly
Including flower basket bolt (24) and it is arranged on the bulge loop (25) of L-shaped external angle plate (22) end, the hook at flower basket bolt (24) two ends
Sub (26) are hooked in bulge loop (25) of the rectangle with two L-shaped external angle plates (22) on one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720029580.6U CN206312753U (en) | 2017-01-11 | 2017-01-11 | A kind of particular manufacturing craft of high frequency transformer iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720029580.6U CN206312753U (en) | 2017-01-11 | 2017-01-11 | A kind of particular manufacturing craft of high frequency transformer iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206312753U true CN206312753U (en) | 2017-07-07 |
Family
ID=59247964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720029580.6U Expired - Fee Related CN206312753U (en) | 2017-01-11 | 2017-01-11 | A kind of particular manufacturing craft of high frequency transformer iron core |
Country Status (1)
| Country | Link |
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| CN (1) | CN206312753U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910612A (en) * | 2017-01-11 | 2017-06-30 | 常州市美格耐特非晶材料有限公司 | The manufacture method and its particular manufacturing craft of a kind of high frequency transformer iron core |
| CN110931238A (en) * | 2019-12-09 | 2020-03-27 | 横店集团东磁股份有限公司 | Nanocrystalline magnetic core and preparation method thereof |
| CN113524034A (en) * | 2021-07-08 | 2021-10-22 | 佛山市南海矽钢铁芯制造有限公司 | Jig for cutting air gap in unilateral centering of small rectangular iron core |
-
2017
- 2017-01-11 CN CN201720029580.6U patent/CN206312753U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910612A (en) * | 2017-01-11 | 2017-06-30 | 常州市美格耐特非晶材料有限公司 | The manufacture method and its particular manufacturing craft of a kind of high frequency transformer iron core |
| CN110931238A (en) * | 2019-12-09 | 2020-03-27 | 横店集团东磁股份有限公司 | Nanocrystalline magnetic core and preparation method thereof |
| CN113524034A (en) * | 2021-07-08 | 2021-10-22 | 佛山市南海矽钢铁芯制造有限公司 | Jig for cutting air gap in unilateral centering of small rectangular iron core |
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