CN204584268U - A kind of neodymium iron boron annulus isostatic pressed structure - Google Patents
A kind of neodymium iron boron annulus isostatic pressed structure Download PDFInfo
- Publication number
- CN204584268U CN204584268U CN201520156553.6U CN201520156553U CN204584268U CN 204584268 U CN204584268 U CN 204584268U CN 201520156553 U CN201520156553 U CN 201520156553U CN 204584268 U CN204584268 U CN 204584268U
- Authority
- CN
- China
- Prior art keywords
- iron boron
- neodymium iron
- green compact
- annulus
- boron annulus
- 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
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The utility model relates to a kind of neodymium iron boron annulus isostatic pressed structure, comprise neodymium iron boron annulus green compact, plug, sheet film and packaging bag, described film is coated on the inwall of neodymium iron boron annulus green compact, described plug inserts the endoporus of neodymium iron boron annulus green compact, one end of described plug and the end face of neodymium iron boron annulus green compact, the other end is than the end face height 2mm of neodymium iron boron annulus green compact, and described package bag vacuum is encapsulated in the outside that neodymium iron boron annulus green compact and plug expose one end of neodymium iron boron annulus green compact endoporus.Adopt the Density Distribution uniformity in each region of shaping structures of the present utility model sintered NdFeB circular ring out high, shrink evenly, there will not be crackle.
Description
Technical field
The utility model belongs to the processing structure field of NdFeB material, particularly relates to a kind of neodymium iron boron annulus isostatic pressed structure.
Background technology
The sintered NdFeB before sintering overwhelming majority through isostatic pressed, to make the density of green compact heighten, will eliminate green compact internal fissure.First green compact are carried out Vacuum Package before isostatic pressed, compressing by carrying out isostatic pressed in packaged green compact immersion oil subsequently.Neodymium iron boron solid cylinder, square body product can good seals when vacuum packaging, and product surface, gapless are close in packaging bag.The hollow type products such as neodymium iron boron annulus, hollow cylinder are when packing, and packaging bag is difficult to be close to bore area, has comparatively wide arc gap.In the process of isostatic pressed, pressure is not delivered to bore area by packaging bag on the one hand, there is pressure reduction on the other hand, easily break, cause product oil-feed to be scrapped inside and outside packaging bag.
Number of patent application CN201420420086.9 describes a kind of novel isostatic pressed packaging bag, and the geometry in bag face is convex, and packaging bag is formed along limit bonding by two convex bag faces; During use, packaging bag bossing is through at the endoporus of annulus or hollow cylinder, subsequently the upset of the lower edge of convex shape is coated on green compact, then Vacuum Package.There is following defect in the method: (1) product encapsulation step is numerous and diverse, and efficiency is low.(2) when bag face bossing is through at product endoporus, easily encounter product, cause losing angle.(3) when aperture is less, the degree of depth is darker, the method be difficult to realize.(4) packaging bag is disposable product, adds manufacturing cost.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of neodymium iron boron annulus isostatic pressed structure, and this structure can improve the quality of neodymium iron boron annulus isostatic pressed processing, and this infrastructure cost is low, good in economic efficiency.
In order to realize above-mentioned object, the utility model have employed following technical scheme:
A kind of neodymium iron boron annulus isostatic pressed structure, comprise neodymium iron boron annulus green compact, plug, sheet film and packaging bag, described film is coated on the inwall of neodymium iron boron annulus green compact, described plug inserts the endoporus of neodymium iron boron annulus green compact, one end of described plug and the end face of neodymium iron boron annulus green compact, the other end is than the end face height 2mm of neodymium iron boron annulus green compact, and described package bag vacuum is encapsulated in the outside that neodymium iron boron annulus green compact and plug expose one end of neodymium iron boron annulus green compact endoporus.
Preferably: the material of described plug is rubber, nylon, plastics or metal.
Preferably: the diameter of described plug is less than the diameter of neodymium iron boron annulus green compact endoporus.
The beneficial effects of the utility model: the green compact after (1) compacting are when packaging, and endoporus is placed with plug, so packaging bag outer surface is smooth, the basic tight of endoporus.When follow-up isostatic pressed, packaging bag can not be broken.(2), when isostatic pressed, the surface of endoporus can be contacted with the cambered surface of plug by sheet film, interacts, makes compact inner holes smooth surface.(3) isostatic pressed terminates, and time product stripping oil enters stove, is taken out by plug, can reuse.Improve the qualification rate of isostatic pressed process.
Adopt the Density Distribution uniformity in each region of shaping structures of the present utility model sintered NdFeB circular ring out high, shrink evenly, there will not be crackle.
Accompanying drawing explanation
Fig. 1 is plan structure figure of the present utility model.
Fig. 2 is Facad structure schematic diagram of the present utility model.
Fig. 3 is plan structure figure of the present utility model after isostatic pressed.
Fig. 4 is Facad structure schematic diagram of the present utility model after isostatic pressed.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is made a detailed explanation.
A kind of neodymium iron boron annulus isostatic pressed structure as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise neodymium iron boron annulus green compact 1, plug 2, sheet film 3 and packaging bag 4, described film 3 is coated on the inwall of neodymium iron boron annulus green compact 1, described plug 2 inserts the endoporus of neodymium iron boron annulus green compact 1, one end of described plug 2 and the end face of neodymium iron boron annulus green compact 1, the other end is than the end face height 2mm of neodymium iron boron annulus green compact 1, and described packaging bag 4 Vacuum Package exposes the outside of one end of neodymium iron boron annulus green compact 1 endoporus at neodymium iron boron annulus green compact 1 and plug 2.The material of described plug 2 is rubber, nylon, plastics or metal, and smooth surface is clean.The diameter of described plug 2 is less than the diameter of neodymium iron boron annulus green compact 1 endoporus.
Practical process of the present utility model is after the compacting of annulus green compact terminates, coated with sheet film, at annulus endoporus at placement plug, then loads polybag Vacuum Package.Diameter of mandrel is less than green compact diameter of bore, slightly larger than the diameter without green compact endoporus after plug isostatic pressed, and aspect ratio green compact height about 2mm.In the process of isostatic pressed, oil pressure is delivered to packaging bag, plug, sheet film, green compact, and annulus green compact are shunk, and core rod touch, and green compact and plug are close in packaging bag, under their support, can not break.Plug has filled up the endoporus of annulus green compact, and when encapsulation, plug supports packaging bag, and when isostatic pressed, packaging bag can not be broken because of inside and outside differential pressure, thus avoids green compact oil-feed.In addition, when isostatic pressed, annulus bore area and core rod touch, under force, bore area becomes smooth, is convenient to following process.
Claims (3)
1. a neodymium iron boron annulus isostatic pressed structure, it is characterized in that: comprise neodymium iron boron annulus green compact (1), plug (2), sheet film (3) and packaging bag (4), described film (3) is coated on the inwall of neodymium iron boron annulus green compact (1), described plug (2) inserts the endoporus of neodymium iron boron annulus green compact (1), one end of described plug (2) and the end face of neodymium iron boron annulus green compact (1), the other end is than the end face height 2mm of neodymium iron boron annulus green compact (1), described packaging bag (4) Vacuum Package exposes the outside of one end of neodymium iron boron annulus green compact (1) endoporus at neodymium iron boron annulus green compact (1) and plug (2).
2. a kind of neodymium iron boron annulus isostatic pressed structure according to claim 1, is characterized in that: the material of described plug (2) is rubber, nylon, plastics or metal.
3. a kind of neodymium iron boron annulus isostatic pressed structure according to claim 1, is characterized in that: the diameter of described plug (2) is less than the diameter of neodymium iron boron annulus green compact (1) endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156553.6U CN204584268U (en) | 2015-03-18 | 2015-03-18 | A kind of neodymium iron boron annulus isostatic pressed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156553.6U CN204584268U (en) | 2015-03-18 | 2015-03-18 | A kind of neodymium iron boron annulus isostatic pressed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204584268U true CN204584268U (en) | 2015-08-26 |
Family
ID=53920466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520156553.6U Expired - Fee Related CN204584268U (en) | 2015-03-18 | 2015-03-18 | A kind of neodymium iron boron annulus isostatic pressed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204584268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3945534A1 (en) | 2020-07-26 | 2022-02-02 | Yantai Shougang Magnetic Materials Inc. | Preparation method of ring-shaped sintered nd-fe-b magnet and its moulding die |
-
2015
- 2015-03-18 CN CN201520156553.6U patent/CN204584268U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3945534A1 (en) | 2020-07-26 | 2022-02-02 | Yantai Shougang Magnetic Materials Inc. | Preparation method of ring-shaped sintered nd-fe-b magnet and its moulding die |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102528029A (en) | Pressing die and method for annular neodymium-iron-boron permanent magnet | |
| CN201132215Y (en) | Isostatic cool pressing forming die for filter tube with closing end | |
| CN105436500A (en) | Radial powder compacting device and method based on electromagnetic pulses | |
| CN204584268U (en) | A kind of neodymium iron boron annulus isostatic pressed structure | |
| CN204276909U (en) | A kind of super large tungsten crucible production assembling die | |
| CN204622261U (en) | A kind of rotary oil pressure brick machine | |
| CN204220989U (en) | The mould that a kind of tungsten crucible isostatic cool pressing is compressing | |
| CN206528121U (en) | A kind of powder pressing forming mould | |
| CN204338856U (en) | A kind of compression molding die of pulverulent product layering | |
| CN206983334U (en) | A kind of hydraulic test for suppressing magnetic material | |
| CN206254093U (en) | A kind of Self adapting fixture based on material section shape | |
| CN104174843A (en) | Oriented compression moulding method for sintered NdFeB | |
| CN205200540U (en) | Spark plasma sintering mould and use sintering equipment of this mould | |
| CN202606858U (en) | Isostatic pressing bag of neodymium-iron-boron ring-shaped blank | |
| CN201644791U (en) | Sintered NdFeB isostatic-pressing mold | |
| CN202824653U (en) | Rare earth forming mould | |
| CN204124559U (en) | A kind of high efficiency nd-fe-b isostatic pressed protection rubber coating | |
| CN201249507Y (en) | Hot isostatic pressing forming die for producing ultra-high molecular weight polyethylene rods and pipes | |
| CN201511542U (en) | Neodymium iron boron large circular ring parallel press device | |
| CN202508403U (en) | Metal drum with welded lugs | |
| CN105014771B (en) | A kind of overlength ceramics bar formation apparatus and its application method | |
| CN202126927U (en) | Mandrel for processing big neodymium iron boron round ring | |
| CN205165871U (en) | Novel rubber mould for isostatic pressing | |
| CN205842024U (en) | The integrated formed structure of 84 ° of female adapters | |
| CN206307967U (en) | A kind of paper wrapper product workshop transport carriage |
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: 20150826 Termination date: 20180318 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |