CN203409006U

CN203409006U - Polycrystalline diamond wire-drawing die with double pressure transfer layers

Info

Publication number: CN203409006U
Application number: CN201320500454.6U
Authority: CN
Inventors: 庞定伟; 邵杰; 王慧敏; 邵潇; 邵珂
Original assignee: HENAN WANKE DIAMOND TOOL CO Ltd
Current assignee: HENAN WANKE DIAMOND TOOL CO Ltd
Priority date: 2013-08-16
Filing date: 2013-08-16
Publication date: 2014-01-29
Anticipated expiration: 2023-08-16

Abstract

The utility model discloses a polycrystalline diamond wire-drawing die with double pressure transfer layers. The polycrystalline diamond wire-drawing die comprises an outer sleeve and a synthetic chamber arranged in the outer sleeve, wherein a pyrophyllite pressure transfer layer is arranged between the synthetic chamber and the outer sleeve; conductive steel caps are respectively arranged at the upper end and lower end of the synthetic chamber; conductive sheets are further arranged between the conductive steel caps and the synthetic chamber; a hollow synthetic bar is further arranged between the synthetic chamber between an upper conductive sheet and a lower conductive sheet and the pyrophyllite pressure transfer layer and consists of an inner pressure transfer layer, a heating layer, an outer pressure transfer layer and a dolomite ring from inside to outside sequentially, and both the inner pressure transfer layer and the outer pressure transfer layer are salt layers formed by salts; added cores are arranged in the steel caps. According to the polycrystalline diamond wire-drawing die, by additionally arranging the dolomite ring and the outer pressure transfer layer, negative effects caused by the high-temperature phase transformation of pyrophyllite are effectively reduced, and the decrease of the partial pressure in the synthetic chamber is compensated by virtue of the high expansibility of a dolomite pipe at the high temperature, so that the rate of finished products is improved.

Description

The Glomerocryst adamas legging mould with two pressure transfer

Technical field

The utility model belongs to mould applications, relates in particular to a kind of wire-drawing die of producing polycrystalline diamond.

Background technology

At present, the Glomerocryst adamas legging mould of forefront, in sintering process, the mould using is under high-temperature high-pressure state, so the design of mould must meet following principle: pressure transmission characteristic is good, heat-insulating property is strong, good airproof performance.In order effectively to utilize HTHP space, improve performance and the yield rate of composite sheet, must overcome existing mold difficult point.These defects are: the high-temperature phase-change of pyrophyllite, cause the increase of moisture in cavity, and pressure decreased, pressure transmission performance is low.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency a kind of Glomerocryst adamas legging mould with two pressure transfer is provided, can effectively reduce the negative effect that the high-temperature phase-change due to pyrophyllite brings, and utilize the height under its high temperature to expand to make up the reduction of part synthetic cavity internal pressure, thereby improve yield rate.

For achieving the above object, the utility model is by the following technical solutions:

A kind of Glomerocryst adamas legging mould with two pressure transfer, comprise overcoat and synthetic cavity, synthetic cavity is arranged in overcoat, between synthetic cavity and overcoat, be provided with pyrophyllite pressure transfer, upper and lower side at synthetic cavity is respectively arranged with conductive steel cap, between conductive steel cap and synthetic cavity, be also provided with conducting strip, between the synthetic cavity between upper and lower conducting strip and pyrophyllite layer, be also provided with hollow synthetic rod, hollow synthetic rod has interior pressure transfer from inside to outside successively, zone of heating, outer pressure transfer and white clouds stone ring form, described interior pressure transfer and outer pressure transfer are all the salt layers that consist of salt, in steel cap, be provided with and add core.

The above-mentioned Glomerocryst adamas legging mould with two pressure transfer, described in to add core be that organic resistance powder is compressed on the powder forming in steel cap and presses and add core.

Adopt technique scheme, the utility model has following advantage: increased white clouds stone ring and outer pressure transfer, effectively reduced the negative effect that the high-temperature phase-change due to pyrophyllite brings, and utilize white clouds madreporic canal height at high temperature to expand to make up the reduction of part synthetic cavity internal pressure, thereby improved yield rate.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

The specific embodiment

A kind of Glomerocryst adamas legging mould with two pressure transfer as shown in Figure 1, comprise overcoat 1 and synthetic cavity 6, synthetic cavity 6 is arranged in overcoat 1, between synthetic cavity and overcoat, be provided with pyrophyllite pressure transfer 7, upper and lower side at synthetic cavity 6 is respectively arranged with conductive steel cap 9, between conductive steel cap 9 and synthetic cavity, be also provided with conducting strip 8, between the synthetic cavity between upper and lower conducting strip and pyrophyllite layer, be also provided with hollow synthetic rod, hollow synthetic rod has interior pressure transfer 3 from inside to outside successively, zone of heating 4, outer pressure transfer 2 and white clouds stone ring 5 form, described interior pressure transfer 3 and outer pressure transfer 2 are all the salt layers that consist of salt, in steel cap, be provided with and add core 10.The described core 10 that adds adds core for organic resistance powder is compressed on the interior powder pressure forming of steel cap.

Claims

1. a Glomerocryst adamas legging mould with two pressure transfer, comprise overcoat (1) and synthetic cavity (6), synthetic cavity (6) is arranged in overcoat (1), between synthetic cavity and overcoat, be provided with pyrophyllite pressure transfer (7), upper and lower side at synthetic cavity (6) is respectively arranged with conductive steel cap (9), between conductive steel cap (9) and synthetic cavity, be also provided with conducting strip (8), between the synthetic cavity between upper and lower conducting strip and pyrophyllite layer, be also provided with hollow synthetic rod, it is characterized in that: hollow synthetic rod has interior pressure transfer (3) from inside to outside successively, zone of heating (4), outer pressure transfer (2) and white clouds stone ring (5) form, described interior pressure transfer (3) and outer pressure transfer (2) are all the salt layers that consist of salt, in steel cap, be provided with and add core (10).

2. the Glomerocryst adamas legging mould with two pressure transfer according to claim 1, is characterized in that: described in add powder that core (10) forms in steel cap for organic resistance powder is compressed on and press and add core.