CN203076587U - Forming mold for improving magnetic force line density of sintered neodymium iron boron corner - Google Patents
Forming mold for improving magnetic force line density of sintered neodymium iron boron corner Download PDFInfo
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- CN203076587U CN203076587U CN 201320085130 CN201320085130U CN203076587U CN 203076587 U CN203076587 U CN 203076587U CN 201320085130 CN201320085130 CN 201320085130 CN 201320085130 U CN201320085130 U CN 201320085130U CN 203076587 U CN203076587 U CN 203076587U
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- corner
- magnetic conduction
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- nonmagnetic
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- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 16
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 title abstract description 8
- 238000000034 method Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The utility model relates to a mold for preparing a neodymium iron boron permanent magnet, in particular to a forming mold for improving the magnetic force line density of a sintered neodymium iron boron corner, and solves the problems that the corner of a pressed compact obtained by carrying out a neodymium iron boron powder material on a compression orientation process using the existing forming mold is easy to fall off, and the density of the corner of the pressed compact is lower than that of the middle part. The forming mold for improving the magnetic force line density of the sintered neodymium iron boron corner comprises a magnetic left side plate (1), a magnetic right side plate (2), a nonmagnetic front clamping plate (3), and a nonmagnetic rear clamping plate (4), wherein the magnetic left side plate, the magnetic right side plate, the nonmagnetic front clamping plate, and the nonmagnetic rear clamping plate are combined to form a cavity (6), a nonmagnetic inner side plate (5) is glued to each of the nonmagnetic front clamping plate and the nonmagnetic rear clamping plate inside the cavity, two longitudinal corner parts of the nonmagnetic inner side plates (5) facing to the inside of the cavity respectively form a corner groove (51), and magnetic strips (7) which are the same as the corner grooves in shape are embedded in the corner grooves. The mold provided by the utility model is simple in structure and reasonable in design.
Description
Technical field
The utility model relates to the mould for preparing Nd-Fe-B permanent magnet, is specially a kind of mould that improves sintered NdFeB corner density of line of magnetic force.
Background technology
Nd-Fe-Bo permanent magnet material is with metallic bond compound N d
2Fe
14B
1Be the permanent-magnet material on basis, neodymium iron boron has high magnetic energy product and coercivity.Nd-Fe-Bo permanent magnet material has obtained to use widely in modern industry and electronic technology, makes device miniaturization, lightweight, slimmings such as instrument and meter, motor, magnetic separation magnetization.Powder metallurgical technique is adopted in existing Nd-Fe-Bo permanent magnet material manufacturing, and technological process is as follows: batching-melting-powder process-die mould orientation-sintering tempering-magnetic detection-mill processing-machining-plating-finished product.
When the die mould orientation process, mould as shown in Figure 3, comprise magnetic conduction left plate 1, magnetic conduction right plate 2, non-magnetic conduction front plate 3, non-magnetic conduction rear plate 4, be processed with two draw-in grooves that are used to engage the forward and backward clamping plate 3,4 of non-magnetic conduction on described magnetic conduction left plate 1 and the magnetic conduction right plate 2 respectively, to form die cavity 6(prismatic when time in the corresponding respectively draw-in groove that places on the left and right side plate 1,2 of magnetic conduction of the forward and backward clamping plate 3,4 of described non-magnetic conduction).In described die cavity 6, post non-magnetic conduction interior plate 5 by AB is gluing respectively on the forward and backward clamping plate 3,4 of described non-magnetic conduction, the width of described non-magnetic conduction interior plate 5 is identical with the width of die cavity 6.
When carrying out the die mould orientation process, the material powder at the position, four corners of die cavity distributes and lacks than middle, causes at the easy arrisdefect in die mould orientation pressed compact corner, back, and the density of line of magnetic force of pressed compact edge is also middle low, pressed compact shrinks badly when descending one sintering tempering process again, easily causes and steps on the limit phenomenon.
Summary of the invention
The utility model provides a kind of mould that improves sintered NdFeB corner density of line of magnetic force for the middle low problem of the density of line of magnetic force that solves existing mould pressed compact corner arrisdefect, pressed compact edge after neodymium iron boron material powder carries out the die mould orientation process.
The utility model is to adopt following technical scheme to realize:
A kind of mould that improves sintered NdFeB corner density of line of magnetic force, comprise magnetic conduction left plate, magnetic conduction right plate, non-magnetic conduction front plate, non-magnetic conduction rear plate, described magnetic conduction left plate, magnetic conduction right plate, non-magnetic conduction front plate, non-magnetic conduction rear plate combination back form die cavity, are pasted with non-magnetic conduction interior plate in described die cavity on the forward and backward clamping plate of non-magnetic conduction respectively; The vertical corner of described non-magnetic conduction interior plate two in die cavity portion forms the corner groove respectively, fixedly is inlaid with the magnetic conduction bar identical with its shape in the groove of described corner.
During work, mould is installed between two cartridges of pressing under magnetic field hydraulic press.All be inlaid with the magnetic conduction bar in two corner grooves of two non-magnetic conduction interior plates in mold cavity, constituted compound interior plate.When carrying out the moulding orientation process, because four vertical edges of two non-magnetic conduction interior plates are magnetic conductions, so the magnetic line of force of coming from the cartridge both sides can deflect at this, thereby strengthened the density of line of magnetic force of four edges in the die cavity, improve the degree of orientation of edge powder, and then improve the cloth powder situation of pressed compact corner, thus increase the density of line of magnetic force of pressed compact corner, make the pressed compact corner also be difficult for arrisdefect.
The utility model is reasonable in design, simple in structure, solve the middle low problem of density of line of magnetic force of existing mould pressed compact corner arrisdefect, pressed compact edge after neodymium iron boron material powder carries out the die mould orientation process, and then also solved the bad problem of pressed compact contraction when descending one sintering tempering process.
Description of drawings
Fig. 1 is the structural representation of compound interior plate.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the structural representation of existing mould.
Among the figure, 1-magnetic conduction left plate, 2-magnetic conduction right plate, the non-magnetic conduction front plate of 3-, the non-magnetic conduction rear plate of 4-, the non-magnetic conduction interior plate of 5-, 6-die cavity, 7-magnetic conduction bar, 8-cartridge, 51-corner groove.
The specific embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is elaborated.
As shown in Figure 1, 2, a kind of mould that improves sintered NdFeB corner density of line of magnetic force, comprise magnetic conduction left plate 1, magnetic conduction right plate 2, non-magnetic conduction front plate 3, non-magnetic conduction rear plate 4, described magnetic conduction left plate 1, magnetic conduction right plate 2, non-magnetic conduction front plate 3, non-magnetic conduction rear plate 4 combination backs form die cavities 6, post non-magnetic conduction interior plate 5 by AB is gluing respectively on the forward and backward clamping plate 3,4 of non-magnetic conduction in described die cavity 6; The vertical corner of described non-magnetic conduction interior plate 5 two in the die cavity 6 portion forms corner groove 51 respectively, fixedly is inlaid with the magnetic conduction bar 7 identical with its shape in the described corner groove 51.
During concrete enforcement, the cross section of described corner groove 51 is rectangle or other shape.
Claims (2)
1. mould that improves sintered NdFeB corner density of line of magnetic force, comprise magnetic conduction left plate (1), magnetic conduction right plate (2), non-magnetic conduction front plate (3), non-magnetic conduction rear plate (4), described magnetic conduction left plate (1), magnetic conduction right plate (2), non-magnetic conduction front plate (3), non-magnetic conduction rear plate (4) combination back form die cavity (6), are pasted with non-magnetic conduction interior plate (5) respectively on the forward and backward clamping plate of non-magnetic conduction (3,4) in described die cavity (6); It is characterized in that: the vertical corner of described non-magnetic conduction interior plate (5) two in the die cavity (6) portion forms corner groove (51) respectively, fixedly is inlaid with the magnetic conduction bar (7) identical with its shape in the described corner groove (51).
2. the mould that improves sintered NdFeB corner density of line of magnetic force according to claim 1 is characterized in that: the cross section of described corner groove (51) is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320085130 CN203076587U (en) | 2013-02-26 | 2013-02-26 | Forming mold for improving magnetic force line density of sintered neodymium iron boron corner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320085130 CN203076587U (en) | 2013-02-26 | 2013-02-26 | Forming mold for improving magnetic force line density of sintered neodymium iron boron corner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203076587U true CN203076587U (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320085130 Expired - Fee Related CN203076587U (en) | 2013-02-26 | 2013-02-26 | Forming mold for improving magnetic force line density of sintered neodymium iron boron corner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203076587U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139183A (en) * | 2014-06-30 | 2014-11-12 | 中磁科技股份有限公司 | Molding device and molding method for rare-earth permanent magnet material |
| CN104190925A (en) * | 2014-09-16 | 2014-12-10 | 北京京磁强磁材料有限公司 | Compression molding die |
| CN109215483A (en) * | 2017-07-08 | 2019-01-15 | 盘锦雨源新创意开发推广有限公司 | A kind of three D hand form block of architectural teaching production mold |
-
2013
- 2013-02-26 CN CN 201320085130 patent/CN203076587U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139183A (en) * | 2014-06-30 | 2014-11-12 | 中磁科技股份有限公司 | Molding device and molding method for rare-earth permanent magnet material |
| CN104139183B (en) * | 2014-06-30 | 2016-03-30 | 中磁科技股份有限公司 | The shaped device of rare earth permanent-magnetic material and forming method |
| CN104190925A (en) * | 2014-09-16 | 2014-12-10 | 北京京磁强磁材料有限公司 | Compression molding die |
| CN109215483A (en) * | 2017-07-08 | 2019-01-15 | 盘锦雨源新创意开发推广有限公司 | A kind of three D hand form block of architectural teaching production mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20180226 |