Manufacturing process of a new type of diamond synthesis column

Abstract

The invention provides a manufacturing process of a novel diamond composite column. The manufacturing process specifically comprises the following steps: mixing material, tabletting, encapsulating, and performing high-temperature and high-pressure treatment; in the material mixing process, a metal contact agent is divided into a plurality of parts with different weights in an arithmetic sequence,and the graphite is equally divided into the parts same as the metal contact agent, one part of the metal contact agent and one part of the graphite are uniformly mixed to press into a graphite sheet;the pressed graphite sheets are combined to form a laminar graphite column in a mode of orderly reducing the parts by weight of the metal contact agent from top to bottom, and then the laminar graphite column is encapsulated to perform the high-temperature and high-pressure treatment to obtain the diamond composite column. By adjusting the metal contact agent content at the upper part and the lower part of the graphite column, the graphite sheets with different metal contact agent contents are combined as the graphite column by using the layered pressing method, the problem that the contact agent proportions at the upper end and the lower end are non-uniform caused by the metal contact agent sediment in high-temperature and high-pressure synthesis is improved, thereby improving the consistency of the granularity and the temperature of the composite diamond, and then the quality of the composite diamond is improved.

Description

technical field [0001] The invention relates to a manufacturing process of a diamond synthetic rod, in particular to a manufacturing process of a novel diamond synthetic column. Background technique [0002] In the field of high-temperature and high-pressure synthetic diamond, artificial synthetic diamond is the process of converting graphite into diamond under the action of a metal catalyst through a six-sided top press. Under the action of a catalytic flux, graphite grows into diamond after a certain period of high temperature and high pressure. Since the density of the metal catalyst is much greater than that of graphite, after a period of high temperature and high pressure, the metal catalyst is transformed from a solid state to a liquid state. Inside the synthesis chamber, the metal catalyst with a higher density will slowly flow downward, eventually resulting in the content of the catalyst flux in the upper and lower parts of the synthesis rod. Inconsistency, resulting...

AI Technical Summary

Problems solved by technology

The present invention adjusts the metal catalyst content of the upper and lower parts of the graphite column, and uses a layered pressing method to combine graphite sheets with different metal catalyst contents into a graphite column, so as to improve the problem of uneven catalyst ratio at the upper and lower ends caused by the settlement of the metal catalyst during high temperature and high pressure synthesis. , so as to improve the consistency of the particle size and temperature of the synthetic diamond, thereby improving the quality of the synthetic diamond

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