CN106252054B - Anisotropic neodymium iron boron magnetic body is molded oriontation shaping device - Google Patents
Anisotropic neodymium iron boron magnetic body is molded oriontation shaping device Download PDFInfo
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- CN106252054B CN106252054B CN201610459115.6A CN201610459115A CN106252054B CN 106252054 B CN106252054 B CN 106252054B CN 201610459115 A CN201610459115 A CN 201610459115A CN 106252054 B CN106252054 B CN 106252054B
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- 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
- H01F41/0273—Imparting anisotropy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
A kind of anisotropic neodymium iron boron magnetic body molding oriontation shaping device comprising die assembly, die assembly are formed by connecting by die main body and seat under the die main body seat of honour, die main body and inner sleeve；Upper stamping parts can move up and down with punching machine head；Lower stamping parts, the upper end is protruded into the mold cavity of die main body；Core bar, its activity is placed through in lower stamping parts, and can move up and down, the lower end of core bar is flexibly connected with punching press base, and anisotropic neodymium iron boron magnetic body pre-press is placed between the mold cavity and core bar of the die main body in heated condition, and it falls at the top of lower stamping parts, stamping parts moves downward in starting, when upper stamping parts enters die main body, is orientated break-over of device and carries out magnetic pole orientation, upper stamping parts continues traveling downwardly, by neodymium iron boron magnetic body pre-press compression moulding.The device of the invention can more magnetic pole positioning orientatings, magnetic pole orientation is uniform, is orientated high-efficient, and magnet density and magnet comprehensive performance are high, can be used for suppressing the magnet that wall thickness is thin and short transverse size is big.
Description
[technical field]
The present invention relates to the production equipments of anisotropic neodymium iron boron magnetic body, more particularly to a kind of anisotropy neodymium-iron-boron
Body is molded oriontation shaping device.
[background technique]
It is known that ndfeb magnet is the strongest permanent magnet of magnetic force so far, it is used as third generation rare earth permanent magnet
Material is widely used in the industries such as the energy, traffic, machinery, medical treatment, IT, household electrical appliances due to very high performance, in particular with
Information technology is the development of the kownledge economy of representative, is constantly brought for Nd-Fe-B rare-earth permanent magnet functional material and industry development new
Purposes, and more extensive market prospects are brought for neodymium iron boron industry.In recent years, electronic product progressively towards miniaturization, it is slim
Change, the direction of high performance is developed, for this purpose, also proposed corresponding requirement to magnetic material.Anisotropic neodymium iron boron magnetic body is logical
It is often to be prepared by techniques such as powder processed, hot pressing oriented moulding, solidification, grinding, surface coatings.The anisotropy of compression molding
The performance of Agglutinate neodymium-iron-boron magnet in addition to have with anisotropic magnet powder additionally depend on outside the Pass compression molding during product orientation
With pressed density etc..However, traditional magnet compression molding device is logical during anisotropic bond neodymium iron boron is hot-forming
It is low often to there is orientation rate, there are leakage fields and magnetic pole during magnetic pole orientation, and uneven, magnetic property relatively designs the problems such as difference is big.
[summary of the invention]
Present invention seek to address that the above problem, and providing one kind has more magnetic pole positioning orientatings, in magnet pressing process
Magnetic pole orientation is uniform, is orientated high-efficient, and magnet density and magnet comprehensive performance are high, can be used for suppressing that wall thickness is thin and short transverse ruler
The anisotropic neodymium iron boron magnetic body of very little big magnet is molded oriontation shaping device.
To achieve the above object, the present invention provides a kind of anisotropic neodymium iron boron magnetic body molding oriontation shaping device, the dress
It sets and includes:
Die assembly is connected with heating device, and the die assembly is by die main body and the die main body seat of honour, mold master
Seat and inner sleeve are formed by connecting under body, and die assembly center is equipped with mold cavity up and down, and the die main body includes being equipped with to take
To the magnetizer of device and without magnet, which is removably connected in the first template, and the first template is then fixed on punching press
Machine top；
Upper stamping parts is removably connected to punching machine head lower part, and stamping parts can move up and down with punching machine head on this；
Lower stamping parts, is tubular body, which is removably connected in the second template, and institute is protruded into the upper end
It states in the mold cavity of die main body；
Core bar, activity is placed through in the lower stamping parts, and can be moved up and down, the lower end of core bar and the activity of punching press base
Connection, and
It is intended to the mould that molding anisotropic neodymium iron boron magnetic body pre-press is placed in the die main body in heated condition
Have between chamber and core bar, and fall at the top of lower stamping parts, stamping parts moves downward in starting, and upper stamping parts enters die main body
When, the orientation break-over of device simultaneously carries out magnetic pole orientation, while upper stamping parts continues traveling downwardly, and neodymium iron boron magnetic body pre-press is suppressed
Molding.
Die main body is affixed at circular cylindrical shape without magnet pairing by the spaced fan-shaped magnetizer of muti-piece and muti-piece sector
Body is equipped with the second centre bore for forming mold cavity in the center of die main body, is respectively equipped on the upper and lower end face of die main body
The convex platform and lower convex platform of annular are arranged with orientation device on each fan-shaped magnetizer.
The magnetizer is identical as the quantity of no magnet, and the magnetizer and the quantity without magnet are equal to anisotropy neodymium
The orientation number of magnetic poles of iron boron magnet pre-press.
The die main body seat of honour is circular cylindrical shape body corresponding with the die main body shape, and center is equipped with and forms mold cavity
The first centre bore, outer surface is equipped with annular stop boss, and the bottom surface at the die main body seat of honour is equipped with convex with die main body
The corresponding first annular groove of platform.
Seat is circular cylindrical shape body corresponding with the die main body shape under die main body, and center is equipped with and forms mold cavity
Third centre bore, the top surface of seat is equipped with second annular groove corresponding with the lower convex platform of die main body under die main body.
The orientation device is electromagnetic coil, is set on the magnetizer of die main body.
Die main body is by being respectively embedded into of seat under the die main body seat of honour and die main body for its convex platform and lower convex platform
It is linked together with seat under the die main body seat of honour and die main body, the die main body seat of honour in one annular groove and second annular groove
The first centre bore, die main body the second centre bore and die main body under the third centre bore of seat be combined to form die assembly
Mold cavity, it is described in be sheathed in the mold cavity of die assembly, and by interference fit with die main body, the die main body seat of honour and
Seat Joint under die main body.
Upper stamping parts is the rhabodoid made of mould steel, and lower end is equipped with blind hole, the blind hole lower end surface cruciform symmetry
If the upper end of upper stamping parts is equipped with upper convex edge there are four the protrusion of orientation magnetic pole mark, upper stamping parts passes through upper press cover and punching
The connection of press head.
The lower stamping parts is the tubular body made of mould steel, and lower end is equipped with lower convex edge, under lower stamping parts passes through
Gland is connect with the second template.
The core bar includes mobile jib and extension rod, wherein mobile jib lower end is equipped with screw thread, and extension rod upper end is equipped with screw hole, main
Bar is threadedly coupled with extension rod, and extension rod lower end is equipped with convex edge, is connected with punching press base.
Contribution of the invention is, efficiently solves traditional magnet compression molding device magnetic in magnet forming process
Pole orientation rate is low, and there are leakage field and magnetic poles that uneven, magnetic property relatively designs the problems such as difference is big.The device of the invention is equipped with
More magnetic pole positioning structures, so that more magnetic pole positioning orientatings are realized in magnet forming process, thus magnetic pole accurate positioning, orientation
Uniformly, magnetic pole orientation is high-efficient, and magnet density is high.The comprehensive magnetic of the magnet as prepared by the device can be high.In addition, this hair
The size adjustable of the mold cavity of bright device can be adjusted acording to the requirement of user, thus it is thin and high to can be used for suppressing wall thickness
Spend the big magnet of direction size.
[Detailed description of the invention]
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is exploded sketch of the invention.
Fig. 3 is die assembly structure sectional view.
Fig. 4 is die main body top view.
Fig. 5 is the A direction view of Fig. 4.
Fig. 6 is die main body structure of seat cross-sectional view.
Fig. 7 is holder structure cross-sectional view under die main body.
Fig. 8 is status diagram before molding oriontation shaping device punching press of the invention.
Fig. 9 is molding oriontation shaping device punching press view of the invention.
Figure 10 is molding oriontation shaping device demoulding status diagram of the invention.
[specific embodiment]
The following example is further explanation of the present invention, is not limited in any way to the present invention.
Refering to fig. 1, Fig. 2, anisotropic neodymium iron boron magnetic body molding oriontation shaping device of the invention include die assembly 10,
Upper stamping parts 40, lower stamping parts 50 and core bar 60.
As shown in FIG. 1 to FIG. 7, the die assembly 10 includes under die main body 11, the die main body seat of honour 12, die main body
Seat 13 and inner sleeve 14, wherein 11 structure of die main body is as shown in Figure 4, Figure 5, which includes that muti-piece cross section is fan
The magnetizer 111 of shape and muti-piece it is fan-shaped without magnet 112, in the present embodiment, the magnetizer 111 is ingot iron DT4, no magnetic
Body is no magnetic mould steel HPM75, muti-piece magnetizer 111 and muti-piece without the circumferentially spaced setting of magnet 112, magnetizer 111
Quantity it is identical as no magnet 112, and the quantity of the magnetizer 111 and no magnet 112 is equal to anisotropic neodymium iron boron magnetic body
The orientation number of magnetic poles of pre-press.In the present embodiment, the die main body 11 is by four pieces of fan-shaped magnetizers 111 and four pieces of sectors without magnet
112 along the circumferential direction to synthesis circular cylindrical shape body, and in the binding site of each adjacent two pieces of magnetizers 111 and no magnet 112
It is mutually fixed by welding, and forms cylindrical mold main body.It is equipped in form mold cavity second in the center of die main body 11
Heart hole 1111, is equipped with the convex platform 114 of annular in the upper surface of die main body 11, is equipped with annular in the lower end surface of die main body 11
Lower convex platform 115, for the chimeric positioning with seat 13 under the die main body seat of honour 12 and die main body.Outside each fan-shaped magnetizer
It is arranged with orientation device 113, which is electromagnetic coil, is set on the magnetizer 111 of die main body 11, is used for
Apply strong magnetic force to magnetizer and carries out magnetic pole orientation.13 structure of seat such as Fig. 6 under the die main body seat of honour 12 and die main body,
Shown in Fig. 7, in Fig. 6, the die main body seat of honour 12 is circular cylindrical shape body corresponding with 11 shape of die main body, by nothing
Magnetic material is made, and for the positioning and fixing of die main body 11, in the present embodiment, which is no magnetic mould steel HPM75.
The first centre bore 121 for forming mold cavity is equipped in the center at the die main body seat of honour 12, outer surface is equipped with annular stop boss
122, for the positioning with the first template 33.The bottom surface at the die main body seat of honour 12 is equipped with first annular groove 123, is used for and mold
The chimeric positioning of the convex platform 114 of main body.In Fig. 7, seat 13 is corresponding with 11 shape of die main body under the die main body
Circular cylindrical shape body, be made of non-magnetic material identical with the die main body seat of honour 12, center, which is equipped with, forms the of mold cavity
Three centre bores 131, the top surface of seat 13 is equipped with second annular groove corresponding with the lower convex platform of die main body under die main body
132, the chimeric positioning for the convex platform 114 with die main body.
As shown in Figure 2 and Figure 3, the die main body 11 is by being respectively embedded into mold for its convex platform 114 and lower convex platform 115
Under the main body seat of honour 12 and die main body in the first annular groove 123 and second annular groove 132 of seat 13 and on die main body
Seat 13 is connected as one under seat 12 and die main body.Second center of first centre bore 121 at the die main body seat of honour, die main body
The third centre bore 131 of seat is combined to form the mold cavity 10A of die assembly under hole 1111 and die main body, and the inner sleeve 14 is set to
In the mold cavity 10A of die assembly, and pass through interference fit and seat under die main body 11, the die main body seat of honour 12 and die main body
13 Joints form die assembly 10.As shown in Figure 1, the die assembly 10 is fixed to the first template 33 by connection cover 15
On, which is circular plate body corresponding with 12 shape of the die main body seat of honour, is equipped with the shape with die main body
The inner hole 151 to match, and multiple screw holes 152 are along the circumferential direction equipped with, connection cover 15 is screwed in the first template 33
Mounting hole in, die assembly 10 is fixed on by the cooperation of inner hole and the annular stop boss 122 on die main body
In first template 33.The die assembly 10 and heating device (not shown), must be to die assembly 10 before magnet compacting
It is heated.
In the present invention, press machine 30, punching machine head 31, the first template 33, the second template 34 and third template 35 are had no
Limitation, can be well known press.In the present embodiment, first is equipped in the 31 lower part compartment of terrain of punching machine head of press machine
Template 33, the second template 34 and third template 35, wherein the first template 33 is connected by guide post with the lower cylinder of press machine 30
It connects, can move up and down, the second template 34 is fixed form, is fixed on punching press base 32, for being oriented to and connecting undershoot
Casting die 50.Third template 35 is connected by guide post with the first template 33, and with the first template 33 synchronize move up and down.
As shown in FIG. 1 to 3, upper stamping parts 40 is housed in 31 lower part of punching machine head, stamping parts 40 is by mould steel on this
Manufactured rhabodoid, lower end are equipped with blind hole 41, set to the 41 lower end surface cruciform symmetry of blind hole there are four block-shaped protrusion 42, are used for
It is orientated the mark of magnetic pole.The upper end of upper stamping parts is equipped with the upper convex edge 43 of annular, is connected for upper press cover 44.The upper press cover
44 be circular discoid body, which is provided with centre bore 441 corresponding with the body of rod of stamping parts 40 and the upper convex edge 43 with upper stamping parts
Corresponding loop concave 442, the upper convex edge 43 of upper stamping parts 40 are placed in the loop concave 442, the body of rod of stamping parts 40
It is extended downwardly across the centre bore 441, upper press cover 44 is then attached by screws in 31 lower part of punching machine head.Stamping parts 40 on this
It can dismantle and replace as needed.
In FIG. 1 to FIG. 3, lower stamping parts 50, the lower punching press are housed in the second template 34 being located at below punching machine head 31
Part 50 is the tubular body made of mould steel, and lower end is equipped with lower convex edge 51, and lower stamping parts 50 passes through lower cover 52 and second
Template 34 connects.Lower cover 52 be circular discoid body, which is provided with centre bore 521 corresponding with the tube body of lower stamping parts 50 and with
The corresponding loop concave 522 in lower convex edge 51 of lower stamping parts, the lower convex edge 51 of lower stamping parts 50 is placed in the loop concave 522
Interior, the tube body of lower stamping parts 50 passes through the centre bore 521 and extends up to middle part in the mold cavity 10A of the die assembly,
The outer diameter of lower stamping parts 50 is slightly less than the internal diameter of the mold cavity 10A of die assembly, between mold cavity 10A and lower stamping parts 50 between
Gap is the wall thickness of the anisotropy magnetic Nd-Fe-B ring of institute's punching press.Lower cover 52 is attached by screws in the second template 34.Under this
Stamping parts 50 can be dismantled and be replaced as needed.
As shown in FIG. 1 to 3, activity has placed core bar 60 in the lower stamping parts 50, which includes mobile jib 61
And extension rod 62, wherein 61 lower end of mobile jib is equipped with screw thread, and 62 upper end of extension rod is equipped with screw hole, mobile jib 61 and 62 screw thread of extension rod
Connection, 62 lower end of extension rod are equipped with convex edge 621, are connected with the third template 35 of press machine.The core bar 60 can be in undershoot
It is moved up and down in casting die 50, is used to limit the internal diameter of anisotropy magnetic Nd-Fe-B ring for molding.
For the course of work of the invention as shown in Fig. 8~Figure 10, Fig. 8 shows the shape before molding oriontation shaping device punching press
State.Anisotropic neodymium iron boron magnetic body pre-press for molding before compaction, be first to must be to die assembly 10 before magnet is suppressed
It is heated.The magnet pre-press is the blank of pre-molding, which is placed on and stretches out in die assembly 10
Except the core bar 60 on, and fall into the top of the lower stamping parts 50 in the mold cavity 10A of die assembly.Such as Fig. 9, at this point,
Start press machine 30, punching machine head 31 drives upper stamping parts 40 to move downward.When upper stamping parts 40 enters die main body 11, institute
Stating orientation device 113 must conduct and carry out magnetic pole orientation to magnet pre-press, and upper stamping parts 40 pushes the magnetic after magnetic pole orientation
Body pre-press continues traveling downwardly, and neodymium iron boron magnetic body pre-press is pressed into required magnet ring.
Although being disclosed by above embodiments to the present invention, the scope of the invention is not limited to this,
Under conditions of present inventive concept, above each component can with technical field personnel understand similar or equivalent element come
Replacement.
Claims (9)
1. a kind of anisotropic neodymium iron boron magnetic body is molded oriontation shaping device, which is characterized in that the device includes:
Die assembly (10), is connected with heating device, and the die assembly (10) is by die main body (11) and die main body
Seat (13) and inner sleeve (14) are formed by connecting under seat (12), die main body, and die assembly center is equipped with mold cavity up and down
(10A), the die main body (11) include equipped with the magnetizer (111) for being orientated device (113) and without magnet (112), the mold
Main body (11) is removably connected on the first template (33), and the first template (33) is then fixed on press machine (30) top；
Upper stamping parts (40) is removably connected to punching machine head (31) lower part, and stamping parts (40) can be with punching machine head on this
(31) it moves up and down；
Lower stamping parts (50), is tubular body, which is removably connected on the second template (34), thereon
End is protruded into the mold cavity (10A) of the die main body；
Core bar (60), activity is placed through in the lower stamping parts (50), and can be moved up and down, the lower end of core bar (60) and punching press
Base (32) is flexibly connected, and the core bar (60) includes mobile jib (61) and extension rod (62), wherein mobile jib (61) lower end is equipped with spiral shell
Line, extension rod (62) upper end are equipped with screw hole, and mobile jib (61) is threadedly coupled with extension rod (62), and extension rod (62) lower end is equipped with convex edge
(621), it is connected with punching press base (32), and
It is intended to the mold cavity that molding anisotropic neodymium iron boron magnetic body pre-press is placed in the die main body in heated condition
It between (10A) and core bar (60), and falls at the top of lower stamping parts (50), stamping parts (40) moves downward in starting, upper stamping parts
(40) when entering die main body (11), the orientation device (113) conducting simultaneously carries out magnetic pole orientation, at the same upper stamping parts (40) after
Continuous downlink, by neodymium iron boron magnetic body pre-press compression moulding.
2. anisotropic neodymium iron boron magnetic body as described in claim 1 is molded oriontation shaping device, which is characterized in that the mold
Main body (11) is affixed at circular columns without magnet (112) pairing by the spaced fan-shaped magnetizer (111) of muti-piece and muti-piece sector
Shape body is equipped with the second centre bore (1111) for forming mold cavity in the center of die main body (11), in the upper of die main body (11)
It is respectively equipped with the convex platform (114) and lower convex platform (115) of annular on lower end surface, is arranged with orientation device on each fan-shaped magnetizer
(113)。
3. anisotropic neodymium iron boron magnetic body as claimed in claim 2 is molded oriontation shaping device, which is characterized in that the magnetic conduction
Body (111) is identical as the quantity of no magnet (112), and the quantity of the magnetizer (111) and no magnet (112) is equal to each to different
The orientation number of magnetic poles of property neodymium iron boron magnetic body pre-press.
4. anisotropic neodymium iron boron magnetic body as claimed in claim 2 is molded oriontation shaping device, which is characterized in that the mold
The main body seat of honour (12) is circular cylindrical shape body corresponding with the die main body (11) shape, and center, which is equipped with, forms the of mold cavity
One centre bore (121), outer surface are equipped with annular stop boss (122), and the bottom surface of the die main body seat of honour (12) is equipped with and mold
The corresponding first annular groove of the convex platform of main body (123).
5. anisotropic neodymium iron boron magnetic body as claimed in claim 2 is molded oriontation shaping device, which is characterized in that the mold
Seat (13) is circular cylindrical shape body corresponding with the die main body (11) shape under main body, and center, which is equipped with, forms the of mold cavity
Three centre bores (131), it is recessed to be equipped with the second annular corresponding with the lower convex platform of die main body for the top surface of seat (13) under die main body
Slot (132).
6. anisotropic neodymium iron boron magnetic body as claimed in claim 2 is molded oriontation shaping device, which is characterized in that the orientation
Device (113) is electromagnetic coil, is set on the magnetizer (111) of die main body (11).
7. the anisotropic neodymium iron boron magnetic body as described in any bar in claim 1 to 6 is molded oriontation shaping device, feature exists
In, the die main body (11) by by its convex platform (114) and lower convex platform (115) be respectively embedded into the die main body seat of honour (12) and
Under die main body in the first annular groove (123) and second annular groove (132) of seat (13) and with the die main body seat of honour (12)
It is linked together with seat under die main body (13), the second centre bore of first centre bore (121) at the die main body seat of honour, die main body
(1111) and under die main body the third centre bore (131) of seat is combined to form the mold cavity (10A) of die assembly, the inner sleeve
(14) in the mold cavity (10A) of die assembly, and pass through interference fit and die main body (11), the die main body seat of honour (12)
And seat (13) Joint under die main body.
8. anisotropic neodymium iron boron magnetic body as described in claim 1 is molded oriontation shaping device, which is characterized in that the upper punching
Casting die (40) is the rhabodoid made of mould steel, and lower end is equipped with blind hole (41), blind hole (41) lower end surface cruciform symmetry
If the upper end of upper stamping parts is equipped with upper convex edge (43), and upper stamping parts (40) is logical there are four the protrusion (42) of orientation magnetic pole mark
Upper press cover (44) is crossed to connect with punching machine head (31).
9. anisotropic neodymium iron boron magnetic body as described in claim 1 is molded oriontation shaping device, which is characterized in that the undershoot
Casting die (50) is the tubular body made of mould steel, and lower end is equipped with lower convex edge (51), and lower stamping parts (50) passes through lower cover
(52) it is connect with the second template (34).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459115.6A CN106252054B (en) | 2016-06-21 | 2016-06-21 | Anisotropic neodymium iron boron magnetic body is molded oriontation shaping device |
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| CN201610459115.6A CN106252054B (en) | 2016-06-21 | 2016-06-21 | Anisotropic neodymium iron boron magnetic body is molded oriontation shaping device |
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| CN106252054B true CN106252054B (en) | 2019-04-09 |
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| CN108850244A (en) * | 2018-08-14 | 2018-11-23 | 安徽省新旭堂茶业有限公司 | It is a kind of to quantify compression molding device for sheet tea processing tea cake |
| CN115193987B (en) * | 2022-07-14 | 2023-05-30 | 江苏南方永磁科技有限公司 | Neodymium iron boron magnetism body shaping suppression device |
| CN115971487B (en) * | 2023-03-21 | 2023-06-09 | 东北大学 | Neodymium iron boron magnet explosion pressing forming die and forming method |
| CN116978686A (en) * | 2023-07-29 | 2023-10-31 | 香磁磁业(深圳)有限公司 | Extremely anisotropic inner peripheral magnetic pole magnetic ring |
| CN116864296B (en) * | 2023-09-01 | 2023-12-08 | 江西荧光磁业有限公司 | Neodymium iron boron magnet stamping forming device and application method thereof |
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| CN202461515U (en) * | 2012-02-10 | 2012-10-03 | 右任磁电（徐州）有限公司 | Radial cylindrical magnet forming die |
| CN105562685A (en) * | 2016-03-09 | 2016-05-11 | 宁波钉子博士磁性技术有限公司 | Nd-Fe-B powder molding press |
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| CN106252054A (en) | 2016-12-21 |
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