CN206936373U

CN206936373U - A kind of mould for the first base of isostatic pressed compacting sintering neodymium iron boron

Info

Publication number: CN206936373U
Application number: CN201720709864.XU
Authority: CN
Inventors: 何胜云
Original assignee: RUYUAN YAO AUTONOMOUS COUNTY LIQIANG MAGNET PRODUCTS Co Ltd
Current assignee: RUYUAN YAO AUTONOMOUS COUNTY LIQIANG MAGNET PRODUCTS Co Ltd
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2018-01-30
Anticipated expiration: 2027-06-16

Abstract

The utility model provides a kind of mould for the first base of isostatic pressed compacting sintering neodymium iron boron, diaphragm seal bag including silica gel bed die and for silica gel bed die described in vacuum sealing, the silica gel bed die is provided with some die cavitys for being used to accommodate the first base of sintered NdFeB being equally spaced, the die cavity is cylindrical, the die cavity one end open, the diaphragm seal bag is enclosed on the silica gel bed die, and the shore hardness of the silica gel bed die is 20 27A.The mould is not only simple in structure, and can effectively improve the product qualification rate of sintered NdFeB just base isostatic pressed compacting.

Description

A kind of mould for the first base of isostatic pressed compacting sintering neodymium iron boron

Technical field

Permanent magnet production equipment technology is the utility model is related to, it is more particularly to a kind of to be used for isostatic pressed compacting sintering neodymium The mould of the first base of iron boron.

Background technology

Traditional sintering and molding neodymium iron boron is completed in the nonmagnetic steel mould in high magnetic field press in short-term, due to nonmagnetic steel mould The structure of tool and press, and the reason such as characteristic of neodymium iron boron powder, the first base of compacting is caused density is relatively low, surface area is big etc. to be present Problem, thus need further to suppress by isostatic pressed.But existing isostatic pressed compacting tool set, or it is complicated, or The defects of due to mold body and first base characteristic in itself, cause the problems such as losing angle, crimp easily occur, serious shadow Ring the production efficiency of product sintered NdFeB.

Utility model content

In order to overcome above-mentioned deficiency, the purpose of this utility model is that providing one kind is used for isostatic pressed compacting sintering neodymium iron boron The mould of first base, the mould are not only simple in structure, and the product that can effectively improve sintered NdFeB just base isostatic pressed compacting closes Lattice rate.

For the utility model to reach its purpose, the technical scheme of use is as follows：

A kind of mould for the first base of isostatic pressed compacting sintering neodymium iron boron, including silica gel bed die and for vacuum sealing institute The diaphragm seal bag of silica gel bed die is stated, the silica gel bed die is provided with some bases at the beginning of for accommodating sintered NdFeB being equally spaced Die cavity, the die cavity is cylindrical, and the die cavity one end open, the diaphragm seal bag is enclosed on the silica gel bed die, the silicon The shore hardness of glue bed die is 20-27A.

Preferably, it is parallel to each other between some die cavitys.

Preferably, the height of the die cavity is 45-50mm.

Preferably, the silica gel thickness between the bottom of the die cavity and the bottom of the silica gel bed die is 5-7mm.

Preferably, the silica gel thickness between adjacent mold cavities is 5-7mm.

Preferably, the silica gel thickness between the die cavity of neighbouring silica gel bed die side wall and silica gel bed die side wall is 5-7mm.

Technical scheme provided by the utility model has the advantages that：

Silica gel bed die of the shore hardness for 20-27A is used, when in use, base at the beginning of sintered NdFeB is loaded into silica gel bed die Die cavity in, then with diaphragm seal bag vacuum sealing, on the one hand, because silica gel bed die has certain elasticity, so as in vacuum Good sealing effectiveness can be reached during sealing, avoid neodymium iron boron in pressing process with air contact.And due to using hard Spend 20-27A silica gel bed die so that it will not cause compressing product crimp in vacuum sealing.Using this reality With new mould, sintered NdFeB qualification rate can be improved, reduces production cost.

Brief description of the drawings

Fig. 1 is a kind of schematic top plan view of silica gel bed die in embodiment；

Fig. 2 is a kind of diagrammatic cross-section of silica gel bed die in Fig. 1；

Fig. 3 is that rubidium iron boron is put into the schematic diagram after die cavity in a kind of embodiment；

Fig. 4 is the schematic diagram being vacuum-sealed in diaphragm seal bag in a kind of embodiment on silica gel bed die.

Embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

The utility model provides a kind of mould for the first base of isostatic pressed compacting sintering neodymium iron boron, referring to Fig. 1-2,4, the mould Tool includes silica gel bed die 1, diaphragm seal bag 4, and diaphragm seal bag 4 is used for vacuum sealing silica gel bed die 1.Silica gel bed die 1 is provided with some Die cavity 2, it is equally spaced between some die cavitys 2, and is parallel to each other.Die cavity 2 is cylindrical, and the one end open of die cavity 2, die cavity 2 is used for Accommodate sintered NdFeB just base 3.The material of silica gel bed die 1 is the silica gel that shore hardness is 20-27A.In use, diaphragm seal bag 4 It is enclosed on the silica gel bed die 1, and vacuum sealing silica gel bed die 1.

As preferred embodiment, the highly preferred of die cavity 2 is 45-50mm.The bottom of die cavity 2 and the silica gel bed die The thickness of silica gel 102 between 1 bottom is 5-7mm.The thickness of silica gel 103 between adjacent mold cavities is 5-7mm.Neighbouring silica gel mould The thickness of silica gel 101 between the die cavity 2 and the side wall of silica gel bed die 1 of 1 side wall is 5-7mm.Using preferable thickness, can reach more Good using effect, it is ensured that the problems such as crimp is produced during use.

When in use, first base at the beginning of sintered NdFeB 3 is loaded in the die cavity 2 of silica gel bed die 1, then by 4 sets of diaphragm seal bag On silica gel bed die 1, and vacuum sealing silica gel bed die 1, isostatic pressed compacting is then carried out, compacting finishes taking-up and sealed off, takes out into Parison, mounted box enter normal sintering in high vacuum sintering furnace.

It is a kind of silica gel bed die for carrying two row die cavitys shown in Fig. 3, showing after base at the beginning of loading rubidium iron boron in its die cavity It is intended to.

Fig. 4 show the schematic rear view being vacuum-sealed in two silica gel bed dies 1 after diaphragm seal bag 4.

Mould of the present utility model, the shore hardness of its silica gel bed die 1 is 20-27A, when in use, due to silica gel bed die 1 With certain elasticity, so as to which good sealing effectiveness can be reached in vacuum sealing, neodymium iron boron is avoided in pressing process With air contact.And due to the silica gel counterdie using hardness 20-27A so that it will not cause to be pressed into vacuum sealing The product crimp of type.Using mould of the present utility model, sintered NdFeB qualification rate can be improved, reduces production cost.

The utility model is not limited to above-mentioned embodiment, and every various changes or modifications to the utility model do not take off From spirit and scope of the present utility model, if these changes and modification belong to the claims and equivalents of the utility model Within the scope of, then the utility model is also implied that comprising these changes and modification.

Claims

1. a kind of mould for the first base of isostatic pressed compacting sintering neodymium iron boron, it is characterised in that including silica gel bed die and for true The empty diaphragm seal bag for sealing the silica gel bed die, the silica gel bed die are provided with some receivings that are used for being equally spaced and sinter neodymium iron The die cavity of the first base of boron, the die cavity is cylindrical, and the die cavity one end open, the diaphragm seal bag is enclosed on the silica gel bed die On, the shore hardness of the silica gel bed die is 20-27A.

A kind of 2. mould for the first base of isostatic pressed compacting sintering neodymium iron boron according to claim 1, it is characterised in that if It is parallel to each other between dry die cavity.

3. the mould according to claim 1 for the first base of isostatic pressed compacting sintering neodymium iron boron, it is characterised in that the mould The height of chamber is 45-50mm.

4. the mould according to claim 1 for the first base of isostatic pressed compacting sintering neodymium iron boron, it is characterised in that the mould Silica gel thickness between the bottom of chamber and the bottom of the silica gel bed die is 5-7mm.

5. the mould according to claim 1 for the first base of isostatic pressed compacting sintering neodymium iron boron, it is characterised in that adjacent mould Silica gel thickness between chamber is 5-7mm.

6. the mould according to claim 1 for the first base of isostatic pressed compacting sintering neodymium iron boron, it is characterised in that adjacent silicon Silica gel thickness between the die cavity and silica gel bed die side wall of glue bed die side wall is 5-7mm.