Super high pressure mould of six top surfaced diamond synthesis pressure equipment

Abstract

An ultra-high pressure die for a six-sided top diamond synthetic press, consisting of four non-heated top hammers and two heated top hammers, the angle of the sealing slope of the heated top hammer is between 20-47°, and the hammer surface of the non-heated top hammer is heated The linear size ratio between the direction and the non-heating direction is 1:0.8-1:1.3, and the hammer surface of the non-heating anvil is a ridge-shaped surface or a chamfered surface that protrudes 0-5° from both sides of the hammer surface along the heating direction to the center of the hammer surface. The conical table surface of the ridged top, the sealing surface of the non-heated anvil and the heated anvil cooperate to form a sealing angle of -0.5-7°. The non-heated anvil is heated to the sealing surface and the non-heated anvil has a circular arc transition. The matching sealing surface of non-heated anvil and heated anvil is arc surface. A square cone-shaped sealing gasket consisting of two layers of non-metallic sealing bowls sandwiching a layer of metal sealing bowls is arranged between the sealing surfaces of the heated anvil and the non-heated anvil in the ultra-high pressure chamber. Because the heated anvil reduces the cone angle of the pressure, increases the compression stroke, prolongs the synthesis time, and can achieve the synthesis effect of the double-sided pressing machine.

Description

technical field [0001] The invention belongs to the technical field of superhard material production, and in particular relates to an ultra-high pressure mold for a six-sided top press machine for diamond synthesis. Background technique [0002] The production of artificial diamond in my country's superhard material industry mainly adopts the hinged six-sided top diamond press. The ultra-high pressure mold is a multi-axis structure without a cylinder, and is surrounded by six anvils perpendicular to each other on the three-dimensional axis. The two top hammers also have the function of electrification to electrically heat the composite block. The six top hammers have the same shape and size and are made of hard alloy. The lower part of the top hammer is a cone with a large upper part and the lower part is a square Hammer surface, each side of the hammer surface is crowned by a sealing surface, a large inclined surface and a cone, and the width of the four sealing surfaces on e...

AI Technical Summary

Problems solved by technology

However, compared with the six-sided top press, the equipment and ultra-high pressure molds are expensive, the process control is difficult, and the processing of the press cylinder is difficult and expensive.

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