CN201530851U - Boat group for sintering Al-Ni-Co permanent magnetic alloy - Google Patents
Boat group for sintering Al-Ni-Co permanent magnetic alloy Download PDFInfo
- Publication number
- CN201530851U CN201530851U CN2009202721837U CN200920272183U CN201530851U CN 201530851 U CN201530851 U CN 201530851U CN 2009202721837 U CN2009202721837 U CN 2009202721837U CN 200920272183 U CN200920272183 U CN 200920272183U CN 201530851 U CN201530851 U CN 201530851U
- Authority
- CN
- China
- Prior art keywords
- boat
- sintering
- cover plate
- indent step
- rectangle
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Ceramic Products (AREA)
Abstract
A boat group for sintering Al-Ni-Co permanent magnetic alloy belongs to the technical field of sintering devices, and is composed of two or more than two same boats which are folded and placed from top to bottom, wherein each bolt is a rectangular box and comprises a bottom board and four side walls, and further comprises a cover plate, an outward concave step is arranged around the rectangular box bottom board, a rectangular bottom surface is arranged inside, an inner concave step is arranged inside the upper end portions of the four side walls of the rectangular box, the cover plate is arranged on the bottom portion of the inner concave step inside the upper end portions of the rectangular box, the cover plate and the inner concave step are movably connected, and oxidation-resistant filler filling spaces are designed in the inner concave step of the lower boat and between the bottom surface of the upper boat and the cover plate. Two exhaust holes are designed on the middle portion of the cover plate. The boat group has the beneficial effects that atmosphere evenness in the sintering bolts can be guaranteed, the sintering temperature is even, deformation of Al-Ni-Co permanent magnetic alloy products is avoided, two exhaust holes are designed in the middle portion of the cover plate, and smooth exhaustion of shaping agent of the products in the glue discharging process can be guaranteed.
Description
Technical field
The utility model relates to a kind of alnico sintering boat group, particularly relates to a kind of aluminium nickel cobalt 8 permanent magnet alloy sintering boat groups that can prevent boat distortion.
Background technology
Alnico is widely used in high-technology field owing to having the advantage that temperature factor is little, temperature stability is high, as fields such as mobile communication, high-grade osophone, precision instrumentation, aerospace transmitters.
Adopting a procedure of its most critical of alnico of powder metallurgy method production is sintering, because product can not be done over again behind sintering again, therefore, the quality of product sintering quality directly influences the following process and the qualification rate of product, even directly influences the magnetic property of product and client's use.In the sintered aluminium Ni-Co permanent magnetic alloy, common defective is low and product distortion, especially distortion of sintered density behind sintering.Product process redundancy in the follow-up course of processing through the sintering after strain is big, even some product occurs casting skin because of distortion causes product after mill processing, causes product directly to be scrapped.
The sintering boat that the sintered aluminium Ni-Co permanent magnetic alloy that is widely used is at present used is that box five block plates that steel are made weld, a base plate, and four blocks of lateral steel plates do not have lid.This steel are through repeatedly being easy to generate distortion behind the sintering, cause the product in the sintering box that a uniform relatively sintering atmosphere can not be arranged in sintering process, and alnico, particularly aluminium nickel cobalt 8 permanent magnet alloys, because the fusing point of its each composition differs greatly, there is low-melting group member, sintering process belongs to liquid phase sintering, at high temperature has the liquid phase of some amount, if sintering atmosphere is inhomogeneous, the magnet on sintering box upper strata will oxidation, thereby also causes the product distortion.
The utility model content
The purpose of this utility model is the defective at above-mentioned prior art, provide a kind of alnico, the special-purpose boat group of aluminium nickel cobalt 8 permanent magnet alloy sinterings particularly, the atmosphere homogeneous in the sintering boat, sintering temperature evenly, guarantee the indeformable property of alnico product.
The technical scheme taked of the utility model is to achieve these goals: a kind of alnico sintering boat group, form by the identical boat more than 2 or 2, upper and lower stack is placed, and each boat is a rectangle box, comprises base plate and four sidewalls; Also comprise cover plate; Around the described rectangle box base plate outer concave station rank are arranged, the inside that the outer concave station rank of rectangle box base plate are surrounded is the rectangle bottom surface; There is an indent step four sidewall upper portions of rectangle box inboard, the length and width of cover plate equals the length and width of rectangle bottom surface, the length and width of the length and width of cover plate and rectangle bottom surface and indent step are complementary, cover plate is in the indent step bottom of inboard, rectangle box upper end, and cover plate and indent step are for flexibly connecting; The bottom surface of the top boat of the upper and lower boat group that stacks below the indent step top of boat, flexibly connect with the indent step; Below in the indent step of boat, above designed anti-oxidation filler packing space between the bottom surface of boat and the cover plate.
Described boat group is made up of 2 identical boats.
Two venting holes have been designed at the middle part of described cover plate.
The bottom design of each sintering boat outer concave station rank, the indent step has been designed in the inboard, upper end, upper and lower two boats are when stacking, the bottom surface of top boat below in the indent step of boat, can cooperatively interact, guarantee the atmosphere homogeneous in the sintering boat, prevented the distortion of alnico product.
Described boat adopts high-purity corundum mullite or high purity graphite to form through die mould, sintering.
Compared with prior art, the beneficial effects of the utility model are:
(1) this sintering boat has designed the cover plate that matches with the sintering boat, the bottom design of each sintering boat step, two boats can cooperatively interact when stacking, and guarantee the atmosphere homogeneous in the sintering boat, have prevented the distortion of alnico product;
(2) designed two venting holes at the middle part of cover plate, the assurance product can be discharged forming agent in the binder removal process smoothly.Produce magnet with powder metallurgy method, what raw material adopted is metal-powder, because metal-powder is harder in moulding process, be difficult to the compacting distortion, and the compacting resistance is very big, therefore powder metallurgy method all is to add a certain amount of forming agent in mixed powder, the effect of forming agent is that the powder resistance is reduced, in pressing process, can also play certain bonding effect, can keep required shape after making powder repressed, therefore but these forming agents are not final material desirable ingredients, it must be discharged in sintering process, the process of Here it is binder removal.The clean level of binder removal and the whether smooth quality that directly influences product, so this also is to need to consider in the process of design boat, after on the cover board having opened aperture, be vacuum state basically in the sintering oven in sintering process, forming agent in the box can gasify in certain temperature, and the forming agent after the gasification just can be got rid of out by aperture.
(3) design anti-oxidation filler packing space between the cover plate of the bottom of sintering boat and below sintering boat up, can when guaranteeing sintering atmosphere, guarantee the homogeneity of sintering temperature like this.
Description of drawings
Accompanying drawing 1 (A) is a sintering boat structure front view;
Accompanying drawing 1 (B) is a sintering boat structure vertical view;
Accompanying drawing 1 (C) is a sintering boat structure left view;
Accompanying drawing 2 (A) is a sintering boat covering plate structure front view;
Accompanying drawing 2 (B) is a sintering boat covering plate structure vertical view;
Accompanying drawing 3 is sintering boat assembling figures.
Reference numeral
1 rectangle box, 11 base plates, 12 sidewalls, 13 outer concave station rank, 14 bottom surfaces, 15 indent steps, 2 cover plates, 21 venting holes, 3 anti-oxidation filler packing space 4 sintering fillers
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
As Fig. 1 (A), (B), (C), Fig. 2 (A), (B) and shown in Figure 3, a kind of alnico sintering boat group, form by two identical boats, upper and lower stack is placed, each boat adopts high-purity corundum mullite sintering boat, through the rectangle box 1 that die mould, sintering form, comprises base plate 11 and four sidewalls 12, physical dimension is 320 * 190 * 95mm, and wall thickness and base thickness are 15mm; Also comprise cover plate 2; Around the described rectangle box base plate 11 outer concave station rank 13 are arranged, the inside that the outer concave station rank of rectangle box base plate 11 are surrounded is a rectangle bottom surface 14; There is an indent step 15 inboard, 1 four sidewall 12 upper ends of rectangle box, the length and width of cover plate 2 equals the length and width of rectangle bottom surface 14, the length and width of the length and width of cover plate 2 and rectangle bottom surface 14 and indent step 15 are complementary, cover plate 2 is in indent step 15 bottoms of inboard, rectangle box 1 upper end, and cover plate 2 is flexible connection with indent step 15; The bottom surface 14 of the top boat of the upper and lower boat group that stacks below indent step 15 tops of boat, flexibly connect with indent step 15; Below in the indent step 15 of boat, above designed anti-oxidation filler packing space 3 between the bottom surface 14 of boat and the cover plate 2.Two venting holes 21 have been designed at the middle part of cover plate 2.
Sintering process: the sintering that has carried out cylindrical aluminium nickel cobalt 8 magnets, workpiece neatly is emitted in the sintering boat, every row's one deck separates with sintering filler 4, workpiece was by multilayer discharging in shown in Figure 3 minute, until the full whole sintering boat of row, cover plate 2 is covered in the indent step on sintering boat top, above sintering cover plate 2 in the anti-oxidation filler packing space 3, the even anti-oxidant filler of layer overlay, the sintering boat that installs workpiece stacks by shown in Figure 3, the bottom surface 14 of top sintering boat overlays on the indent step 15 of below sintering boat, guarantees sintering boat sealing and position relative fixed relatively.
As Fig. 1 (A), (B), (C), Fig. 2 (A), (B) and shown in Figure 3, a kind of alnico sintering boat group, form by two identical boats, upper and lower stack is placed, and each boat adopts graphite sintering boat to carry out the sintering of cylindrical alnico magnet, forms rectangle box 1 through die mould, sintering, for preventing that graphite from producing the carburizing phenomenon to product surface, at rectangle box 1 internal surface, be coated with the last layer high-temperature resistant coating, earlier through 800 ℃ of oven dry.Surplus with embodiment 1.
Above-described embodiment, the utility model two kinds of embodiment more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.
Claims (3)
1. an alnico sintering boat group is made up of the identical boat more than 2 or 2, and upper and lower stack is placed, and each boat is a rectangle box, comprises base plate and four sidewalls, it is characterized in that: also comprise cover plate; Around the described rectangle box base plate outer concave station rank are arranged, the inside that the outer concave station rank of rectangle box base plate are surrounded is the rectangle bottom surface; There is an indent step four sidewall upper portions of rectangle box inboard, the length and width of cover plate equals the length and width of rectangle bottom surface, the length and width of the length and width of cover plate and rectangle bottom surface and indent step are complementary, cover plate is in the indent step bottom of inboard, rectangle box upper end, and cover plate and indent step are for flexibly connecting; The bottom surface of the top boat of the upper and lower boat group that stacks below the indent step top of boat, flexibly connect with the indent step; Below in the indent step of boat, above designed anti-oxidation filler packing space between the bottom surface of boat and the cover plate.
2. a kind of alnico sintering boat group according to claim 1, it is characterized in that: described boat group is made up of 2 identical boats.
3. a kind of alnico sintering boat group according to claim 1 and 2, it is characterized in that: two venting holes have been designed at the middle part of described cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202721837U CN201530851U (en) | 2009-11-13 | 2009-11-13 | Boat group for sintering Al-Ni-Co permanent magnetic alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202721837U CN201530851U (en) | 2009-11-13 | 2009-11-13 | Boat group for sintering Al-Ni-Co permanent magnetic alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201530851U true CN201530851U (en) | 2010-07-21 |
Family
ID=42526256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202721837U Expired - Fee Related CN201530851U (en) | 2009-11-13 | 2009-11-13 | Boat group for sintering Al-Ni-Co permanent magnetic alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201530851U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978205A (en) * | 2013-02-07 | 2014-08-13 | 上海六晶金属科技有限公司 | Method for sintering green bodies of tungsten metal plates, molybdenum metal plates, tungsten alloy plates or molybdenum alloy plates |
| CN104538181A (en) * | 2014-12-29 | 2015-04-22 | 中国振华（集团）新云电子元器件有限责任公司 | Compacting method for manganese dioxide layer forming of tantalum capacitor |
| CN106955999A (en) * | 2017-03-29 | 2017-07-18 | 株洲钻石切削刀具股份有限公司 | A kind of boat and boat group for hard alloy dewaxing technique |
| 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 |
| CN111676453A (en) * | 2020-07-30 | 2020-09-18 | 京东方科技集团股份有限公司 | Evaporation crucible |
-
2009
- 2009-11-13 CN CN2009202721837U patent/CN201530851U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978205A (en) * | 2013-02-07 | 2014-08-13 | 上海六晶金属科技有限公司 | Method for sintering green bodies of tungsten metal plates, molybdenum metal plates, tungsten alloy plates or molybdenum alloy plates |
| CN104538181A (en) * | 2014-12-29 | 2015-04-22 | 中国振华（集团）新云电子元器件有限责任公司 | Compacting method for manganese dioxide layer forming of tantalum capacitor |
| CN104538181B (en) * | 2014-12-29 | 2017-06-16 | 中国振华（集团）新云电子元器件有限责任公司 | A kind of dense method of tantalum capacitor envelope |
| CN106955999A (en) * | 2017-03-29 | 2017-07-18 | 株洲钻石切削刀具股份有限公司 | A kind of boat and boat group for hard alloy dewaxing technique |
| 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 |
| CN111676453A (en) * | 2020-07-30 | 2020-09-18 | 京东方科技集团股份有限公司 | Evaporation crucible |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201530851U (en) | Boat group for sintering Al-Ni-Co permanent magnetic alloy | |
| US3982934A (en) | Method of forming uniform density articles from powder metals | |
| CN101269414B (en) | Casting method for large-scale overpressure resistant aluminum housing | |
| CN100457333C (en) | Method of producing porous metal thin titanium board | |
| CN101767186A (en) | Method for preventing crush of lost foam casting product | |
| CN107671283A (en) | The powder metallurgy forming equipment of electric machine casing | |
| CN111482597A (en) | Printing method of 3D model with sintering support structure | |
| CN113560533B (en) | Composite pouring system | |
| CN212398126U (en) | Sintered magnet aging treatment material box | |
| CN207563737U (en) | The powder metallurgy forming equipment of electric machine casing | |
| CN108908812B (en) | Filler strip for section bar and manufacturing method thereof | |
| CN113186568B (en) | Gradient metal ceramic inert anode material for aluminum electrolysis | |
| CN215199540U (en) | Inside gaseous exhaust structure of mould | |
| CN102274929B (en) | Method for preventing lost foam casting product from crushing | |
| CN202155999U (en) | Injection mould with submarine gates | |
| CN103273676A (en) | Brick tea pressing machine | |
| CN103418795A (en) | Micro-sealing method using vacuum and high pressure | |
| CN203184647U (en) | Compact alloy powder forming die | |
| CN219360410U (en) | ITO planar target cold isostatic pressing forming die | |
| CN116638697B (en) | High-performance graphite-based composite bipolar plate, preparation method and application | |
| CN201449850U (en) | Split casting coil | |
| CN201644791U (en) | Sintered NdFeB isostatic-pressing mold | |
| CN111152333A (en) | Cold isostatic pressing method based on rigid mold and application thereof | |
| CN219133107U (en) | Sealing member injection moulding is with mould | |
| CN210450843U (en) | Pouring device for steel casting investment casting process |
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 |
Granted publication date: 20100721 Termination date: 20171113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |