CN202824654U - Sintered Nd-Fe-B pressing mold - Google Patents
Sintered Nd-Fe-B pressing mold Download PDFInfo
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- CN202824654U CN202824654U CN 201220516942 CN201220516942U CN202824654U CN 202824654 U CN202824654 U CN 202824654U CN 201220516942 CN201220516942 CN 201220516942 CN 201220516942 U CN201220516942 U CN 201220516942U CN 202824654 U CN202824654 U CN 202824654U
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Abstract
The utility model discloses a sintered Nd-Fe-B pressing mold which comprises an outer mold, inner molds and magnetization pole heads, the outer mold and the inner molds are through a mold cavity, the magnetization pole heads are arranged on the outer mold, the inner molds are arranged in the mold cavity, the size of the section of the inner molds is in accordance with that of the mold cavity, the number of the inner molds is two and the inner molds are arranged in the mold cavity opposite to each other, and the magnetization pole heads are arranged at the two ends of the outer mold. Due to the inner molds and the outer mold which are arranged in a matched mode, blank pressing is convenient, pressing efficiency of blank is improved, meanwhile due to the fact that the magnetization pole heads are arranged at the two ends of the outer mold and are used for adjusting the magnetic pole direction of powder materials, the sintered Nd-Fe-B pressing mold is beneficial for improving the quality of a product and magnetic susceptibility of a magnet and promoting magnetic performance of the product.
Description
Technical field
The utility model relates to a kind of compacting tool set of ferromagnetic powder material compacting tool set, particularly a kind of sintered NdFeB.
Background technology
Ndfeb magnet, suitability for industrialized production permanent magnet a kind of has the advantages that volume is little, lightweight and magnetic is strong, is the magnet of ratio of performance to price the best up to now.Ndfeb magnet is as third generation rare earth permanent-magnetic material, has very high performance, be widely used in the industries such as the energy, traffic, machinery, medical treatment, IT, household electrical appliances, it particularly is the development of the kownledge economy of representative along with information technology, constantly bring new purposes to functional materials such as rare earth permanent magnet neodymium iron boron industries, this brings more wide market prospects for the neodymium iron boron industry.Ndfeb magnet is the tetragonal crystal that is formed by neodymium, iron, boron (Nd2Fe14B).In nineteen eighty-two, the assistant river true man of Sumitomo particulate metal (Masato Sagawa) find neodium magnet.The magnetic energy product of this magnet (BHmax) is the at that time material of magnetic energy product maximum of the whole world greater than SmCo magnet.Afterwards, Sumitomo particulate metal developed successful powder metallurgic method (powder metallurgy process), and General Motors Corporation develops successful churning smelting process (melt-spinning process), can prepare ndfeb magnet.Ndfeb magnet can be divided into two kinds of Agglutinate neodymium-iron-boron and sintered NdFeBs.In fact bonding is exactly injection mo(u)lding, and sintering is to vacuumize by the high-temperature heating moulding! Ndfeb magnet is the strongest permanent magnet of magnetic now, also is the rare-earth magnet (rare earth magnet) of normal use, is widely used in electronic product, for example hard disk, mobile phone, earphone and battery-powered instrument etc.For fear of the infringement of corrosion, need to do conservation treatment at this permanent magnetic material surface during use, for example electroplate with gold, nickel, zinc, tin, and surface spraying epoxy resin etc.Sintered neodymium iron boron material is to adopt powder metallurgical technique, needs to add the auxiliary material such as gasoline and antioxidant in the moulding of ndfeb magnet blank.In the blank pressing process, be easy to exist pore between the powder materials, suppress the defectives such as unreal, thereby affect the quality of product, become substandard product, affect the output benefit of enterprise.
The utility model content
For addressing the above problem, the utility model discloses a kind of compacting tool set of sintered NdFeB, reduced the compacting difficulty of blank, improved compacting efficient, also be beneficial to simultaneously the compressing of blank, improve the yield rate of blank compacting.
The compacting tool set of the disclosed a kind of sintered NdFeB of the utility model, comprise and be provided with external mold, the internal mold that connects die cavity and be arranged on the cartridge that magnetizes on the external mold, it is consistent with die cavity that described internal mold is arranged on die cavity sectional dimension interior and internal mold, described internal mold is two and is oppositely arranged in the die cavity that the described cartridge that magnetizes is arranged on the two ends of external mold.The internal mold that cooperatively interact and the external mold of the utility model by arranging, made things convenient for the compressing of neodymium iron boron blank, improved blank compacting efficient, reduce compressing difficulty, improved the qualification rate of blank, by the two ends at external mold the cartridge that magnetizes is set simultaneously, pole orientation to powder materials is adjusted, be conducive to improve the quality of product, improve the magnetic susceptibility of magnet, the magnetic property of improving product.
A kind of improvement of the compacting tool set of the disclosed a kind of sintered NdFeB of the utility model is provided with dumping pit on the described external mold.The dumping pit of this improvement by arranging is conducive to discharge the redundancy material in the mould in pressing process, not only made things convenient for the compacting of blank, can also guarantee stability and the uniformity of blank quality, is convenient to realize the standardization of blank finished product.
Another of the compacting tool set of the disclosed a kind of sintered NdFeB of the utility model improved, and the compacting tool set of described a kind of sintered NdFeB also comprises the auxiliary agent adding trough, and described auxiliary agent adding trough is communicated in the die cavity by capillary.The auxiliary agent adding trough of this improvement by arranging, conveniently in pressing process, in powder materials, inject gradually auxiliary agent, thereby be conducive to improve the compaction rate of blank compacting, not only made things convenient for the moulding of blank to also help the defective that reduces in the blank, guaranteed the compacting quality of blank.
The compacting tool set of a kind of sintered NdFeB that the utility model is wide, the compressing convenience that provides of blank not only is provided, improve the compacting efficient of blank, can also improve the compaction rate of blank, reduce the defective of blank, improve the quality of product, and guarantee the quality stability of batch production blank.
Description of drawings
Fig. 1, structural representation of the present utility model;
Reference numerals list: 1, die cavity, 2, external mold, 3, internal mold, 4, the cartridge that magnetizes, 5, dumping pit, 6, the auxiliary agent adding trough, 7, capillary.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand the following specific embodiment and only be used for explanation the utility model and be not used in restriction scope of the present utility model.
As shown in Figure 1, the compacting tool set of the disclosed a kind of sintered NdFeB of the utility model, comprise and be provided with external mold 2, the internal mold 3 that connects die cavity 1 and be arranged on the cartridge 4 that magnetizes on the external mold, it is consistent with die cavity that described internal mold is arranged on die cavity sectional dimension interior and internal mold, described internal mold is two and is oppositely arranged in the die cavity that the described cartridge that magnetizes is arranged on the two ends of external mold.The internal mold that cooperatively interact and the external mold of the utility model by arranging, made things convenient for the compressing of neodymium iron boron blank, improved blank compacting efficient, reduce compressing difficulty, improved the qualification rate of blank, by the two ends at external mold the cartridge that magnetizes is set simultaneously, pole orientation to powder materials is adjusted, be conducive to improve the quality of product, improve the magnetic susceptibility of magnet, the magnetic property of improving product.
As a kind of preferred, be provided with dumping pit 5 on the described external mold.The dumping pit of the utility model by arranging is conducive to discharge the redundancy material in the mould in pressing process, not only made things convenient for the compacting of blank, can also guarantee stability and the uniformity of blank quality, is convenient to realize the standardization of blank finished product.
As a kind of preferred, the compacting tool set of described a kind of sintered NdFeB also comprises auxiliary agent adding trough 6, and described auxiliary agent adding trough is communicated in the die cavity by capillary 7.The auxiliary agent adding trough of the utility model by arranging, conveniently in pressing process, in powder materials, inject gradually auxiliary agent, thereby be conducive to improve the compaction rate of blank compacting, not only made things convenient for the moulding of blank to also help the defective that reduces in the blank, guaranteed the compacting quality of blank.
The compacting tool set of a kind of sintered NdFeB that the utility model is wide, the compressing convenience that provides of blank not only is provided, improve the compacting efficient of blank, can also improve the compaction rate of blank, reduce the defective of blank, improve the quality of product, and guarantee the quality stability of batch production blank.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme that is comprised of above technical characterictic any combination.The above is the specific embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (3)
1. the compacting tool set of a sintered NdFeB, it is characterized in that: comprise being provided with external mold, the internal mold that connects die cavity and being arranged on the cartridge that magnetizes on the external mold, it is consistent with die cavity that described internal mold is arranged on die cavity sectional dimension interior and internal mold, described internal mold is two and is oppositely arranged in the die cavity that the described cartridge that magnetizes is arranged on the two ends of external mold.
2. the compacting tool set of a kind of sintered NdFeB according to claim 1 is characterized in that: be provided with dumping pit on the described external mold.
3. the compacting tool set of a kind of sintered NdFeB according to claim 1, it is characterized in that: the compacting tool set of described a kind of sintered NdFeB also comprises the auxiliary agent adding trough, described auxiliary agent adding trough is communicated in the die cavity by capillary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516942 CN202824654U (en) | 2012-10-10 | 2012-10-10 | Sintered Nd-Fe-B pressing mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516942 CN202824654U (en) | 2012-10-10 | 2012-10-10 | Sintered Nd-Fe-B pressing mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202824654U true CN202824654U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220516942 Expired - Fee Related CN202824654U (en) | 2012-10-10 | 2012-10-10 | Sintered Nd-Fe-B pressing mold |
Country Status (1)
| Country | Link |
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| CN (1) | CN202824654U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306940A (en) * | 2020-03-12 | 2020-06-19 | 浙江吉成新材股份有限公司 | Boron carbide ceramic pressureless sintering process and device |
| CN114478028A (en) * | 2022-02-15 | 2022-05-13 | 浙江吉成新材股份有限公司 | Boron carbide ceramic sintering process |
-
2012
- 2012-10-10 CN CN 201220516942 patent/CN202824654U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306940A (en) * | 2020-03-12 | 2020-06-19 | 浙江吉成新材股份有限公司 | Boron carbide ceramic pressureless sintering process and device |
| CN114478028A (en) * | 2022-02-15 | 2022-05-13 | 浙江吉成新材股份有限公司 | Boron carbide ceramic sintering process |
| CN114478028B (en) * | 2022-02-15 | 2023-03-10 | 浙江吉成新材股份有限公司 | Boron carbide ceramic sintering process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131010 |