Production technology for quickly synthesizing polycrystalline diamond

A polycrystalline diamond and production process technology, applied in the application of ultra-high pressure process, etc., can solve the problems of unsteady control of product quality, low production efficiency, high cost, etc., achieve small internal stress, improve service life, and internal The effect of uniform stress distribution

Active Publication Date: 2015-07-08
HENAN FAMOUS DIAMOND IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This traditional long-term synthetic production has relatively high cost, low production efficiency and unstable product quality control

Method used

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  • Production technology for quickly synthesizing polycrystalline diamond

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with specific embodiments.

[0016] Such as figure 1 shown, including the following steps:

[0017] 1) Assemble the synthetic block with catalyst and raw materials, and bake at 200°C-230°C for 12-14 hours;

[0018] 2) Put the synthetic block into the press, and the starting pressure rises to 60MPa;

[0019] 3) Start heating after 30 seconds, the heating power is 15KW, and the heating current is 4000A;

[0020] 4) After heating for 29 seconds, raise the pressure to 80MPa;

[0021] 5) After continuing to heat for 6 seconds, the heating power suddenly drops to 12KW, and the heating stops after the heating current is 3150A;

[0022] 6) Continue to keep the pressure, the pressure is 80MPa;

[0023] 7) After 6-10 seconds, stop pressurization and synthesize polycrystalline diamond. The optimal solution is 10 seconds.

[0024] The technical solution of the present invention is not limited to the limitati...

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PUM

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Abstract

The invention discloses a production technology for quickly synthesizing polycrystalline diamond. Graphite is transformed into polycrystalline diamond under the action of a catalyst through different ultrahigh temperatures and high pressures in a short time. The polycrystalline diamond produced by the production technology disclosed by the invention has small surface internal stress and uniform distribution of internal stress, and the service life of the polycrystalline diamond is greatly prolonged.

Description

technical field [0001] The invention relates to the field of superhard material synthesis, in particular to a production process for rapidly synthesizing polycrystalline diamond. Background technique [0002] With the emergence and development of superhard materials, the production of artificial diamond has opened up a broad market prospect. Synthetic diamonds are approaching people's lives more and more, so people's production and research on synthetic diamonds are getting deeper and deeper, and the use and efficiency of synthetic diamonds are increasing. [0003] Under normal circumstances, artificial diamond is a high-grade single crystal artificial diamond transformed from graphite under ultra-high pressure and high temperature conditions for a long time and with the participation of catalytic metals. This traditional long-term synthetic production has relatively high cost, low production efficiency and unstable product quality control. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/06
Inventor 李建林李小刚李立王明赵春红司蕊
Owner HENAN FAMOUS DIAMOND IND CO LTD
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