A kind of crucible pressing equipment for artificial diamond production

Abstract

The invention discloses a crucible pressing equipment for artificial diamond production, which relates to the technical field of crucible manufacturing. There is an upper pressure head, and the middle part of the lower surface of the mounting block is fixedly connected with an upper butt piece, and the middle part of the lower surface of the upper butt piece is fixedly connected to one end of the guide column, and the other end of the guide column is vertically downward and slides through the It is inserted into the sliding concave hole opened in the center of the upper part of the connecting block. The invention can make the upper indenter contact with the raw material of the crucible and achieve an effect similar to buffering and shock absorption, consume the instantaneous impact force, achieve the effect of buffering and protection of the upper indenter, and reduce the wear of the upper indenter. Small impact force can also maintain the flatness of the crucible raw material in the clamping die holder, which helps to maintain the quality of the subsequent crucible products.

Description

technical field [0001] The invention relates to the technical field of crucible manufacturing, in particular to a crucible pressing device for artificial diamond production. Background technique [0002] The existing crucible for diamond production mainly adopts a simple pressing and molding method. The crucible sand and additives are mixed and evenly mixed into a steel mold according to the proportion, and the crucible blank is simultaneously pressurized from the upper and lower indenters. After taking out, it is dried and sintered at a high temperature. After that, the finished crucible is obtained. This method can produce crucibles with a capacity of 50 to 1000 kg. [0003] Chinese utility model patent CN211333750U discloses a crucible pressing equipment for the production of synthetic diamond, which solves the above-mentioned problems. "Making crucible blanks", since the crucible sand and additives are loaded into the steel mold in a loose state, when the upper indente...

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Problems solved by technology

[0003] Chinese utility model patent CN211333750U discloses a crucible pressing device for artificial diamond production, which solves the above problems. "Crucible blank", because the crucible sand and additives are loaded into the steel mold in a loose state, when the upper pressure head descends and touches the raw materials in the steel mold in an instant, a relatively large pressure will be generated, which will cause the steel mold to The raw material in the center bulges irregularly to the surroundings, causing wrinkles on the upper surface of the raw material in the steel mold, which is not smooth enough, and it is easy to increase the defect rate of the subsequent crucible to a certain extent

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