CN202258777U - Charging box of neodymium iron boron magnet raw blank for vacuum sintering furnace - Google Patents
Charging box of neodymium iron boron magnet raw blank for vacuum sintering furnace Download PDFInfo
- Publication number
- CN202258777U CN202258777U CN2011204181008U CN201120418100U CN202258777U CN 202258777 U CN202258777 U CN 202258777U CN 2011204181008 U CN2011204181008 U CN 2011204181008U CN 201120418100 U CN201120418100 U CN 201120418100U CN 202258777 U CN202258777 U CN 202258777U
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- iron boron
- neodymium iron
- box body
- sintering furnace
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Abstract
The utility model relates to a charging box, in particular to a charging box of a neodymium iron boron magnet raw blank for a vacuum sintering furnace. The charging box of the neodymium iron boron magnet raw blank for the vacuum sintering furnace is long in service life, low in damage rate of sintered neodymium iron boron magnet blocks and high in yield. The charging box comprises a box body and a box cover which are both made from graphite, wherein a pinhole is arranged in the side of the box body, and a rare earth oxide power layer is covered on the bottom in the box body.
Description
Technical field
The utility model relates to a kind of magazine, more particularly, relates to the neodymium iron boron magnetic body green compact magazine that a kind of vacuum sintering furnace is used.
Background technology
In rare earth sintered NdFeB permanent magnet industry, the carbon steel magazine that the vacuum sintering technology of neodymium iron boron magnetic body needs a large amount of tradition to use, but there are a lot of shortcomings in this magazine.In the production of Nd-Fe-B permanent magnetic; Vacuum sintering technology is controlled within the strict scope temperature requirement; Too high temperature can cause grain growth, and the density of low excessively temperature magnet does not reach requirement, the inconsistency of magnetic property of the Sintered NdFeB magnet of same stove occurs through regular meeting.Its reason is that traditional sintering process is used the carbon steel magazine; In up and down magazine and same magazine, often find to exist the inhomogeneities of temperature in the sintering process; Magnet after being directed at sintering and coming out of the stove; Neodymium iron boron magnetic body magnetic property inconsistency in up and down magazine and same magazine, magnetic property phenomenon slightly on the low side has influenced the qualification rate of product.Secondly, carbon steel magazine size is bigger, and is heavy, and magnet is prone to slide in the carrying, causes magnet and magnet, and colliding with each other between magnet and magazine very easily makes magnet knocked limit and arrisdefect, reduced the qualification rate of product.Traditional carbon steel magazine, intensity is low under the high temperature, after every stove uses, the distortion carbon steel magazine that adopts press to correct always at high temperature to be twisted, not only labour intensity is big, and changes in almost per season, and will change full half a year, the expense material, take a lot of work and do not save money.
The utility model content
The utility model is exactly to the problems referred to above, and a kind of long service life is provided, and the spoilage of ndfeb magnet is low behind the sintering, the neodymium iron boron magnetic body green compact magazine that the vacuum sintering furnace that qualification rate is high is used.
In order to realize the utility model above-mentioned purpose, the utility model adopts following technical scheme, comprises that box body, lid process by graphite, and the top, side of box body is provided with aperture, and the bottom in the box body is coated with one deck rare earth oxide bisque.
Said box body is cuboid or square.
The inside of said box body is isolated into the zone that varies in size by dividing plate, and dividing plate is processed by graphite.
Described rare earth oxide is a yttrium oxide powder.
Top, the side aperture number of said box body is 4-16, aperture φ=5-8mm.
The specification of said box body is 300 (length) * 260 (wide) * 70 (height) mm, and thickness is 10mm, and the specification of said lid is 300 (length) * 260 (wide) * 10 (thick) mm.
The beneficial effect of the utility model:
After using this utility, sintered NdFeB magnets Ke edges and collision angle phenomenon is almost zero, the passing rate improved economic efficiency.
High temperature resistant, high, indeformable, the magazine long service life of intensity under the high temperature had been exempted in the past ninety-nine times out of a hundred after the sintering, and the renewal that the carbon steel magazine of distortion is carried out orthopedic processing and part magazine is replaced always, and laborsaving, saving of labor is material-saving again.
Good thermal shock, the low coefficient of expansion, high-melting-point and high strength.Magazine is indeformable in whole high temperature sintering and the cold process of timeliness tempering speed, has guaranteed that Sintered NdFeB magnet has uniform shrinkage, makes sintered magnet that good quality and overall dimensions arranged.
The raising of qualification rate, magnetic property and economic benefit in fact also is the consumption that has reduced rare earth Nd, Pr, Dy, Tb and other alloying element, for country has practiced thrift non-renewable valuable and rare mineral resources.
Description of drawings
Fig. 1. the structural representation of the utility model.
Fig. 2 a is the outside vertical view of box body, and Fig. 2 b is the outside end view of box body, and Fig. 2 c is the outside vertical view of lid, and Fig. 2 d is the outside end view of lid.
Fig. 3 a is the inner vertical view of box body, and Fig. 3 b is the inner end view of box body.
Among Fig. 1,1. box body 2. lids 3. neodymium iron boron magnetic body green compact 4. apertures 5. rare earth oxide bisques 6. dividing plates
Embodiment:
Said box body 1 is cuboid or square.
The inside of said box body 1 is isolated into the zone that varies in size by dividing plate 6, and dividing plate 6 is processed by graphite.
Described rare earth oxide is a yttrium oxide powder.
Top, side aperture 4 numbers of said box body 1 are 4-16, aperture φ=5-8mm.
The specification of said box body 1 is 300 (length) * 260 (wide) * 70 (height) mm, and thickness is 10mm, and the specification of said lid 2 is 300 (length) * 260 (wide) * 10 (thick) mm.
Equipment is 300 kilograms of charging protections of VAS-300RPA type vacuum sintering furnace.
Sprinkle one deck rare-earth oxidation yttrium bisque 5 in rectangle graphite charging box body 1 bottom of 300 * 260 * 70mm earlier, the N that fills that sends into VAS-300RPA type vacuum sintering furnace through the neodymium iron boron magnetic body green compact 3 of the isostatic cool pressing 45M trade mark
2In the gas shiled glove box, neodymium iron boron magnetic body green compact 3 are of a size of: 60.4 * 50.7 * 54.4mm, when oxygen content in the gloves for protection case≤0.05PPM, closed valve, and keep N
2The malleation of a little higher than atmosphere of gas.Then, open neodymium iron boron magnetic body green compact 3 outer packaging things, put into graphite charging box body 1 lightly through the isostatic cool pressing compacting; 20 in every box covers graphite lid 2, is placed on the feeding guide; Keep flat three layers altogether, every layer eight box is adorned 480 in neodymium iron boron green compact 3 material altogether.Charging finishes, and opens the slide valve of sintering furnace body and glove box, sends in the vacuum sintering furnace, vacuumizes immediately, carries out vacuum-sintering then, and the 45M grade neodymium-iron-boron magnet of coming out of the stove behind the sintering is of a size of: 50.5 * 44.5 * 37.2mm.
To presentation quality, the magnetic that adopts the 45M grade neodymium-iron-boron magnet that graphite magazine and traditional carbon steel magazine sintering come out of the stove detect with relatively; List in the table 1; The result is following: the graphite box is adorned 480 in neodymium iron boron magnetic body material altogether; External form quality and size are all qualified, and qualification rate is 100%.Secondly, the graphite magazine is slightly higher than the magnetic property of traditional carbon steel magazine, and good uniformity, coercivity H j are low slightly, and the technical indicator of product 45M grade neodymium-iron-boron magnet is all qualified.
The 45M magnet performance relatively after table 1, graphite magazine and the vacuum-sintering of traditional carbon steel magazine
Embodiment 2
Equipment is 300 kilograms of charging protections of VAS-300RPA type vacuum sintering furnace.
Sprinkle one deck rare-earth oxidation yttrium powder 5 in box body 1 bottom of 300 * 260 * 70mm; Then neodymium iron boron magnetic body green compact 3 neodymium iron boron magnetic bodies through the isostatic cool pressing 48H trade mark; Green compact 3 sizes: 65.9 * 61.6 * 46.7mm sends into the charging of VAS-300RPA type vacuum sintering furnace and fills N
2In the gas shiled glove box, when oxygen content in the gloves for protection case≤0.05PPM, close valve, kept malleation.Open the neodymium iron boron magnetic body green compact 3 outer packaging things through isostatic cool pressing compacting, put into graphite material box body 1 to it gently, 16 in every box is placed on the feeding guide after covering graphite lid 2, keeps flat three layers altogether, and every layer eight box is adorned 384 in neodymium iron boron material altogether.Charging finishes, and opens in the sintering body of heater and fills N with charging
2The slide valve that glove box connects is sent in the vacuum-sintering burner hearth green compact 3 magazines are housed, and closes slide valve immediately and vacuumizes, and carries out vacuum-sintering, and the neodymium iron boron magnetic body of coming out of the stove behind the sintering is of a size of: 55.0 * 54.5 * 32.0mm.
Graphite loading of conventional steel boxes and loading cassette neodymium sintered grades 48H baked? Iron-boron magnets of the outer Guan quality, magnetic detection and comparison results are shown in Table 2: Stone cartridge loading NdFeB total material 384, exterior quality and size are all qualified, a pass rate of 100%.Identical with embodiment 1 situation, the graphite magazine is slightly higher than the magnetic property of traditional carbon steel magazine, and coercivity H j is low slightly, and the technical indicator of product 48H grade neodymium-iron-boron magnet is all qualified.
The 48H magnet performance relatively after table 2, graphite magazine and the vacuum-sintering of traditional carbon steel magazine
Embodiment 3:
Equipment is 300 kilograms of charging protections of VAS-300RPA type vacuum sintering furnace.
Sprinkle one deck rare-earth oxidation yttrium powder 5 in box body 1 bottom of 300 * 260 * 70mm; Then neodymium iron boron magnetic body green compact 3 through the isostatic cool pressing 35SH trade mark; Neodymium iron boron magnetic body green compact 3 sizes: 62.5 * 54.2 * 55.5mm sends into the charging N of VAS-300RPA type vacuum sintering furnace
2In the gas shiled glove box, when oxygen content in the gloves for protection case≤0.05PPM, close valve, kept N
2Malleation is opened the green compact 3 outer packaging things through isostatic cool pressing, puts into graphite material box body 1 lightly, 20 in every box; Install the graphite box body 1 of neodymium iron boron magnetic body green compact 3 material, cover graphite lid 2, be placed on the feeding guide; Keep flat three layers altogether, every layer eight box is adorned 480 in neodymium iron boron material altogether.Charging finishes, and opens in the sintering body of heater and the slide valve of glove box, sends in the vacuum sintering furnace, vacuumizes immediately, carries out vacuum-sintering, and the neodymium iron boron magnetic body of coming out of the stove behind the sintering is of a size of: 51.5 * 46.5 * 38.2mm.
Filling the graphite box and conventional sintered steel loading cassette 35SH baked outer Guan grade quality NdFeB magnets, magnetic detection and comparison of the results listed in Table 3: Stone material NdFeB loaded cartridge 480 total block, exterior quality and size are all qualified, a pass rate of 100%.Identical with embodiment 1 with 2 situation; The graphite magazine is slightly higher than the magnetic property of traditional carbon steel magazine; The square degree of magnet is also slightly quite a lot of, the magnetic property good uniformity, but coercivity H j is different with embodiment 1 and 2; Higher slightly, the technical indicator of product 35SH grade neodymium-iron-boron magnet product is all qualified.
The 35SH magnet performance relatively after table 3, graphite magazine and the vacuum-sintering of traditional carbon steel magazine
Claims (5)
1. neodymium iron boron magnetic body green compact magazine that vacuum sintering furnace is used; Comprise box body (1), lid (2); It is characterized in that; Box body (1) and lid (2) are processed by graphite, and the top, side of box body (1) is provided with aperture (4), and the bottom in the box body (1) is coated with one deck rare earth oxide bisque (5).
2. neodymium iron boron magnetic body green compact magazine according to claim 1 is characterized in that said box body (1) is cuboid or square.
3. neodymium iron boron magnetic body green compact magazine according to claim 1 is characterized in that the inside of said box body (1) is isolated into the zone that varies in size by dividing plate (6).
4. neodymium iron boron magnetic body green compact magazine according to claim 1 is characterized in that described rare earth oxide bisque (5) is the yittrium oxide bisque.
5. neodymium iron boron magnetic body green compact magazine according to claim 1 is characterized in that, top, side aperture (4) number of said box body (1) is 4-16, aperture φ=5-8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204181008U CN202258777U (en) | 2011-10-28 | 2011-10-28 | Charging box of neodymium iron boron magnet raw blank for vacuum sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204181008U CN202258777U (en) | 2011-10-28 | 2011-10-28 | Charging box of neodymium iron boron magnet raw blank for vacuum sintering furnace |
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| Publication Number | Publication Date |
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| CN202258777U true CN202258777U (en) | 2012-05-30 |
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| CN2011204181008U Expired - Lifetime CN202258777U (en) | 2011-10-28 | 2011-10-28 | Charging box of neodymium iron boron magnet raw blank for vacuum sintering furnace |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689012A (en) * | 2012-06-15 | 2012-09-26 | 徐州金石彭源稀土材料厂 | Material box for sintering neodymium iron boron |
| CN104028755A (en) * | 2013-03-07 | 2014-09-10 | 三环瓦克华（北京）磁性器件有限公司 | Permanent magnet sintering material box and material stacking method |
| CN110090952A (en) * | 2018-01-28 | 2019-08-06 | 蒋盼盼 | A kind of the dress firing method and device of rare-earth Nd-Fe-B magnet |
| CN110788322A (en) * | 2019-11-08 | 2020-02-14 | 安徽昭田电子科技有限公司 | Method for preventing necking deformation in magnetic core sintering process |
| CN112750613A (en) * | 2020-03-31 | 2021-05-04 | 河北泛磁聚智电子元件制造有限公司 | Preparation method of ultrahigh maximum magnetic energy product sintered samarium-cobalt magnet |
| CN115138843A (en) * | 2022-06-29 | 2022-10-04 | 包头金山磁材有限公司 | Neodymium iron boron sintering material box and preparation method and application thereof |
-
2011
- 2011-10-28 CN CN2011204181008U patent/CN202258777U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689012A (en) * | 2012-06-15 | 2012-09-26 | 徐州金石彭源稀土材料厂 | Material box for sintering neodymium iron boron |
| CN104028755A (en) * | 2013-03-07 | 2014-09-10 | 三环瓦克华（北京）磁性器件有限公司 | Permanent magnet sintering material box and material stacking method |
| CN104028755B (en) * | 2013-03-07 | 2018-06-05 | 三环瓦克华（北京）磁性器件有限公司 | A kind of permanent magnet sintering magazine and code material method |
| CN110090952A (en) * | 2018-01-28 | 2019-08-06 | 蒋盼盼 | A kind of the dress firing method and device of rare-earth Nd-Fe-B magnet |
| CN110788322A (en) * | 2019-11-08 | 2020-02-14 | 安徽昭田电子科技有限公司 | Method for preventing necking deformation in magnetic core sintering process |
| CN110788322B (en) * | 2019-11-08 | 2021-07-27 | 安徽昭田电子科技有限公司 | Method for preventing necking deformation in magnetic core sintering process |
| CN112750613A (en) * | 2020-03-31 | 2021-05-04 | 河北泛磁聚智电子元件制造有限公司 | Preparation method of ultrahigh maximum magnetic energy product sintered samarium-cobalt magnet |
| CN112750613B (en) * | 2020-03-31 | 2023-02-07 | 河北泛磁聚智电子元件制造有限公司 | Preparation method of ultrahigh maximum magnetic energy product sintered samarium-cobalt magnet |
| CN115138843A (en) * | 2022-06-29 | 2022-10-04 | 包头金山磁材有限公司 | Neodymium iron boron sintering material box and preparation method and application thereof |
| CN115138843B (en) * | 2022-06-29 | 2024-01-23 | 包头金山磁材有限公司 | Neodymium iron boron sintering material box and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |