CN212398126U - Sintered magnet aging treatment material box - Google Patents
Sintered magnet aging treatment material box Download PDFInfo
- Publication number
- CN212398126U CN212398126U CN202021000781.1U CN202021000781U CN212398126U CN 212398126 U CN212398126 U CN 212398126U CN 202021000781 U CN202021000781 U CN 202021000781U CN 212398126 U CN212398126 U CN 212398126U
- Authority
- CN
- China
- Prior art keywords
- box body
- magazine
- sintered magnet
- aging treatment
- plate
- 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
Images
Landscapes
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The utility model discloses a magazine for sintered magnet ageing treatment, magazine for sintered magnet ageing treatment is copper, and it includes the box body and installs in the lid of box body top, be provided with the ascending first holding chamber of opening on the box body, first holding intracavity is provided with and is used for the scalable baffle with first holding intracavity space division, scalable baffle supports and holds in the box body internal surface. The utility model discloses a metallic copper is as the magazine material, and heat conduction efficiency is high, sets up scalable I shape copper baffle in the magazine simultaneously, improves the magazine utilization ratio, in addition all coats at magazine internal surface and scalable baffle surface and has the boron nitride coating, can prevent the mutual adhesion of sintered magnet under the high temperature condition. The utility model discloses both be applicable to sintered magnet sintering and accomplish back ageing treatment, be applicable to miniature magnet grain boundary diffusion ageing treatment again, extensive applicability, batch production is simple.
Description
Technical Field
The utility model belongs to sintered magnet production field, specifically speaking relates to a sintered magnet is magazine for aging treatment.
Background
In the sintered rare earth permanent magnet material industry, the vacuum sintering and aging treatment processes of sintered magnets are often performed continuously, and a large number of material boxes are required. As a material box for containing blank products, the ventilation property and the heat conductivity of the material box play a decisive role in the cooling speed of the products. Meanwhile, the sintered magnet has extremely high requirement on oxidation resistance, so a graphite material box with good sealing property is often selected in production, and the contradiction between cooling speed and sealing property cannot be considered at the same time. The invention CN105935768 discloses an open type material box, which realizes sintering sealing and effective cooling by bedding tin paper in the material box with holes, but the melting of the tin paper is easy to coat the surface of a sintered magnet, and the subsequent processing is difficult. The current solution is to age the magnets by placing them in open graphite capsules after sintering. The thermal conductivity is still problematic, the heating is not uniform, and the performance of the sintered magnet is different; on the other hand, with the popularization of the grain boundary diffusion technology in the field of sintered neodymium iron boron magnets, the diffusion aging treatment of the micro magnets also needs a material box with good heat conductivity, but diffusion sources are easy to adhere at high temperature, the distance needs to be kept between the magnets, and the traditional graphite material box is not suitable for the grain boundary diffusion aging treatment.
Accordingly, further improvements and enhancements are needed in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problems, a material box for aging treatment of a sintered magnet, which has excellent thermal conductivity and is commonly used for a bulk magnet and a micro magnet, has been proposed.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a sintering magnet is magazine for aging treatment, sintering magnet is magazine for aging treatment for copper, and it includes the box body and installs the lid in the box body top, be provided with the ascending first holding chamber of opening on the box body, first holding intracavity is provided with and is used for the scalable baffle with first holding intracavity space partition, scalable baffle supports holds in the box body inner surface.
Furthermore, scalable baffle includes that length adjustable middle part board and the connecting plate that is located middle part board both ends constitute, the connecting plate at middle part board and middle part board both ends forms the I shape structure.
Furthermore, the middle plate comprises a fixed plate and a movable plate, a second accommodating cavity for accommodating the movable plate is arranged in the fixed plate, and a positioning bolt for limiting the movable plate is arranged at one end of the fixed plate.
Furthermore, a plurality of air holes are respectively formed in the periphery and the bottom of the box body, the box cover and the surface of the telescopic partition plate, and the air holes are uniformly distributed in the periphery and the bottom of the box body, the box cover and the surface of the telescopic partition plate.
Preferably, the pore diameters of the vent holes are the same and are all 8-15 mm.
Preferably, the thicknesses of the periphery, the bottom and the cover plate of the box body are the same and are 10-20mm, and the thickness of the telescopic partition plate is 3-8 mm.
Furthermore, the box body and the box cover are both formed by one-time injection molding.
Furthermore, the inner surface of the box body accommodating cavity and the surface of the partition plate are coated with boron nitride coatings.
Preferably, the boron nitride coating thickness is less than 1 mm.
Advantageous effects
The utility model provides a sintering magnet is magazine for aging treatment, compared with the prior art, its beneficial effect as follows:
(1) compared with the existing graphite mold, the mold is prepared by using metal copper through an injection molding method, the heat conduction coefficient of the copper is 401W/(mK), the heat conduction coefficient of the graphite is 151W/(mK), and the heat conduction efficiency and the cooling efficiency are greatly improved.
(2) Through set up retractable I shape copper baffle in the magazine, can make and form heat conduction channel between magnet and the magnet, cooling efficiency when guaranteeing the homogeneity and the cooling of thermal treatment temperature, the magnet performance obtains promoting.
(3) The boron nitride coatings are coated on the inner surface of the accommodating cavity of the box body and the surface of the telescopic partition plate, so that the heat conduction efficiency is improved, the mutual adhesion between the magnets at high temperature can be avoided, the aging treatment after sintering of the sintered magnet is finished is suitable, the grain boundary diffusion aging treatment of the miniature magnet is also suitable, the applicability is wide, and the batch production is simple.
(4) The periphery and the bottom of the box body, the box cover and the surfaces of the telescopic partition plates are respectively provided with the plurality of vent holes, so that the ventilation effect in the furnace is improved, and the cooling effect is further improved.
Drawings
FIG. 1 is a plan view of the sintered magnet aging treatment cartridge of embodiment 1 of the present invention, except for the lid;
FIG. 2 is a schematic sectional view of a cartridge for aging a sintered magnet according to embodiment 1 of the present invention.
In the figure: 100-box body, 200-vent hole, 310-fixed plate, 320-movable plate, 330-positioning bolt, 340-connecting plate and 400-box cover.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustration and not for limitation of the present invention.
Detailed description of the preferred embodiment 1
A box for aging treatment of sintered magnet, as shown in fig. 1-2, is a copper box, comprising a box body 100 and a box cover 400 mounted on the box body 100.
Preferably, the cartridge 100 is a rectangular parallelepiped or a cube.
Preferably, the purity of copper is more than 98%, and the heat conduction coefficient of copper is 401W/(mK), compared with the material box made of graphite in the prior art, the heat conduction and cooling effects of the material box are greatly improved.
Specifically, be provided with the ascending first holding chamber of opening on box body 100, be provided with in first holding intracavity and be used for the scalable baffle with first holding intracavity space separation, scalable baffle's both ends support and hold in box body 100 internal surface, can form heat conduction channel between magnet and magnet, cooling efficiency when guaranteeing the homogeneity of thermal treatment temperature and cooling, and the magnet performance obtains promoting. The telescopic partition board can be transversely or vertically placed in the first accommodating cavity, and when the telescopic partition board is vertically placed in the first accommodating cavity, the telescopic partition board divides the first accommodating cavity into a left cavity and a right cavity, so that magnets with the same or different sizes are transversely placed in the first accommodating cavity. When the telescopic partition board is transversely placed in the first accommodating cavity, the telescopic partition board divides the first accommodating cavity into an upper layer and a lower layer, and magnets with the same or different sizes are longitudinally placed in the first accommodating cavity.
Preferably, the plurality of telescopic partition plates are arranged, the first accommodating cavity can be divided into a plurality of transverse or longitudinal accommodating spaces, and the utilization rate of the material box is improved.
Specifically, scalable baffle includes that length adjustable middle part board and the connecting plate 340 that is located middle part board both ends constitute, and the connecting plate 340 at middle part board and middle part board both ends forms the I shape structure. The middle plate is composed of a fixed plate 310 and a movable plate 320, a second accommodating cavity for accommodating the movable plate 320 is formed in the fixed plate 310, and a positioning bolt 330 for limiting the movable plate 320 is arranged at one end of the fixed plate 310. Loosening the positioning bolts 330, transversely or longitudinally arranging the telescopic partition plates in the first accommodating cavities according to the use conditions, adjusting the placing positions of the telescopic partition plates according to the sizes of the sintering magnets, adjusting the movable plate 320 to enable the connecting plates 340 at two ends of the telescopic partition plates to respectively abut against the inner surface of the box body 100, screwing the positioning bolts 330 to ensure that the fixed plate 310 and the movable plate 320 are relatively fixed, placing the sintering magnets in the first accommodating cavities separated by the telescopic partition plates, loosening the positioning bolts 330 after use, moving the movable plate 320, and integrally moving out the telescopic partition plates.
The placing position of the telescopic partition plate in the first containing cavity can be adjusted according to the size of the magnet, so that the magnet can be contained in the material box as much as possible under the condition that the aging treatment requirement of the sintered magnet is met, and the utilization rate of the first containing cavity in the material box is improved.
Specifically, a plurality of vent holes 200 are respectively formed in the periphery and the bottom of the box body 100, the box cover 400 and the surface of the telescopic partition plate, and the vent holes 200 are uniformly distributed in the periphery and the bottom of the box body 100, the box cover 400 and the surface of the telescopic partition plate, so that the ventilation effect in the furnace is improved, the cooling effect is further improved, and meanwhile, due to the good ventilation effect, the furnace discharging treatment is not needed, the working efficiency is improved, and the labor intensity is reduced.
Preferably, the apertures of the vent holes 200 are the same and 8-15 mm.
Preferably, the thickness of the periphery, the bottom and the cover plate of the box body 100 are the same and are 10-20mm, and the thickness of the telescopic partition plate is 3-8 mm.
Further, the case body 100 and the case cover 400 are formed by one-time injection molding.
Specifically, the boron nitride coating is coated on the inner surface of the accommodating cavity of the box body 100 and the surface of the partition plate, so that the heat conduction efficiency is ensured, the mutual adhesion between the magnets at high temperature can be avoided, the aging treatment after sintering of the sintered magnet is finished is suitable, the grain boundary diffusion aging treatment of the miniature magnet is also suitable, the applicability is wide, and the batch production is simple.
Preferably, the boron nitride coating thickness is less than 1 mm.
When the material box is used specifically, firstly, the sintered neodymium iron boron blank formed by pressing is loaded into the material box for aging treatment of the sintered magnet for sintering; secondly, after sintering, cooling and cooling, loading the sintered magnets into the material box, wherein each layer is separated from each row of magnets by a shrinkable partition plate; and finally, covering the box cover 400 on the box body 100, placing the material box in a vacuum heat treatment furnace for two-step aging treatment, filling argon for quenching after heat preservation is finished, and measuring the magnetic performance of the sintered magnet.
Comparative example 1
For comparison, a press-formed sintered Nd-Fe-B (nominal composition Nd)29Pr1.5Dy0.5Fe64.2Co2Nb1Ga0.8B1.0) The blank is loaded into a graphite box and is sintered and subjected to an aging treatment process according to the same process, and then the magnetic property is measured.
Comparative example 2
For comparison, a press-formed sintered Nd-Fe-B (nominal composition Nd)29Pr1.5Dy0.5Fe64.2Co2Nb1Ga0.8B1.0) The blank is loaded into a graphite material box to be sintered according to the same process, then the blank is placed into an open graphite material box to be subjected to two-step aging treatment, argon is filled into the graphite material box to be quenched after the two-step aging treatment is finished, and then the magnetic property is measured.
Analysis of results
The magnetic properties of the sintered magnets of the specific example 1 and the comparative examples 1 and 2 are shown in table 1.
TABLE 1 magnetic Properties of sintered magnets of concrete example 1 and comparative examples 1 and 2
As can be seen from Table 1, compared with the continuous sintering of the graphite material box, the aging treatment and the sintering process are respectively carried out, the coercive force is obviously improved, and the comprehensive performance is improved. And contrast open-type graphite magazine, the utility model discloses copper magazine's advantage is more obvious, and coercive force has improved 0.9kOe, and this is high with copper product matter heat conductivity, and the setting up of scalable baffle makes heating temperature distribution more even, cooling efficiency is higher when cooling.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (9)
1. The utility model provides a sintering magnet is magazine for ageing treatment, its characterized in that, sintering magnet is magazine for ageing treatment for copper, sintering magnet is magazine for ageing treatment includes the box body and installs the lid in the box body top, be provided with the ascending first holding chamber of opening on the box body, first holding intracavity is provided with and is used for the scalable baffle with first holding intracavity space separation, scalable baffle supports and holds in the box body inner surface.
2. The magazine for aging treatment of sintered magnets as claimed in claim 1, wherein the retractable partition comprises a middle plate with adjustable length and connecting plates at two ends of the middle plate, the middle plate and the connecting plates at two ends of the middle plate form an I-shaped structure.
3. The magazine for aging treatment of sintered magnets as claimed in claim 2, wherein the middle plate is composed of a fixed plate and a movable plate, a second accommodating cavity for accommodating the movable plate is arranged in the fixed plate, and a positioning bolt for limiting the movable plate is arranged at one end of the fixed plate.
4. The material box for aging treatment of sintered magnet according to claim 1, wherein a plurality of vent holes are respectively arranged on the periphery and bottom of the box body, the box cover and the surface of the retractable partition plate, and the vent holes are uniformly distributed on the periphery and bottom of the box body, the box cover and the surface of the retractable partition plate.
5. The cartridge for aging treatment of a sintered magnet according to claim 4, wherein the vent holes have the same diameter and are each 8 to 15 mm.
6. The material box for aging treatment of sintered magnet according to claim 1, wherein the thickness of the periphery, bottom and cover plate of the box body are the same and 10-20mm, and the thickness of the retractable partition plate is 3-8 mm.
7. The cartridge for aging treatment of a sintered magnet according to claim 1, wherein the cartridge body and the cartridge cover are both formed by one-time injection molding.
8. The material box for aging treatment of sintered magnet according to claim 1, wherein the inner surface of the box body accommodating cavity and the surface of the retractable partition plate are coated with boron nitride coatings.
9. The cartridge for aging a sintered magnet according to claim 8, wherein the boron nitride coating thickness is less than 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021000781.1U CN212398126U (en) | 2020-06-03 | 2020-06-03 | Sintered magnet aging treatment material box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021000781.1U CN212398126U (en) | 2020-06-03 | 2020-06-03 | Sintered magnet aging treatment material box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212398126U true CN212398126U (en) | 2021-01-26 |
Family
ID=74408632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021000781.1U Active CN212398126U (en) | 2020-06-03 | 2020-06-03 | Sintered magnet aging treatment material box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212398126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054753A (en) * | 2021-11-22 | 2022-02-18 | 中钢天源股份有限公司 | Material box for sintering neodymium iron boron and sintering method |
| CN117284628A (en) * | 2023-11-24 | 2023-12-26 | 内蒙古北科交大机器人有限公司 | Magnet magazine and destacking system |
-
2020
- 2020-06-03 CN CN202021000781.1U patent/CN212398126U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054753A (en) * | 2021-11-22 | 2022-02-18 | 中钢天源股份有限公司 | Material box for sintering neodymium iron boron and sintering method |
| CN117284628A (en) * | 2023-11-24 | 2023-12-26 | 内蒙古北科交大机器人有限公司 | Magnet magazine and destacking system |
| CN117284628B (en) * | 2023-11-24 | 2024-01-26 | 内蒙古北科交大机器人有限公司 | Magnet magazine and destacking system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212398126U (en) | Sintered magnet aging treatment material box | |
| US20110250087A1 (en) | Method for producing sintered rare-earth magnet and powder-filling container for producing such magnet | |
| CN103646772A (en) | Preparing method of R-Fe-B sintered magnet | |
| CN101809689A (en) | Process for producing sintered ndfeb magnet and mold for producing sintered ndfeb magnet | |
| JP6280096B2 (en) | Sintered magnet manufacturing method | |
| KR20170033218A (en) | Method for manufacturing rare earth sintered magnet and manufacturing apparatus used therefore | |
| US20180197680A1 (en) | Method for improvement of magnetic performance of sintered ndfeb lamellar magnet | |
| CN106887321B (en) | A kind of coercitive method of raising rare-earth magnet | |
| US4713877A (en) | Method of forming permanent magnets within a motor yoke | |
| CN202258777U (en) | Charging box of neodymium iron boron magnet raw blank for vacuum sintering furnace | |
| CN111519141A (en) | Lithium alloy target material and preparation method and application thereof | |
| CN104715877B (en) | A kind of rare-earth permanent magnet and its manufacturing method | |
| CN204700307U (en) | A kind of continuous fritting furnace of permanent-magnet rare-earth NdFeB alloy | |
| CN105551789A (en) | Manufacturing method of rare earth permanent magnet | |
| JP2007191787A (en) | Die for high temperature pressure molding, method for producing magnet, and magnet | |
| CN105161242A (en) | Preparation method of neodymium iron boron | |
| CN116393677B (en) | Method for preparing diamond/aluminum composite material by high-flux near-net forming | |
| CN108447638A (en) | A kind of New energy automobile motor ultra-high coercive force Nd-Fe-B permanent magnet and preparation method thereof | |
| CN109161819B (en) | Preparation method of sintered neodymium-iron-boron magnet with low carbon content | |
| CN101867267B (en) | Technology for manufacturing neodymium iron boron (NdFeB) magnetic tile used for radial oriented motor and moulding mould thereof | |
| CN211915505U (en) | Device for sintering magnet | |
| CN114054753A (en) | Material box for sintering neodymium iron boron and sintering method | |
| JP3818397B2 (en) | Manufacturing method of multi-structure rare earth metal magnet body | |
| CN219968610U (en) | Epoxy resin flake curing die | |
| CN114823025B (en) | Low-eddy-current-loss neodymium-iron-boron magnet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |