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Manufacturing process of novel diamond composite column

A diamond synthesis column and manufacturing process technology, applied in the application of ultra-high pressure process, the method of using atmospheric pressure to chemically change substances, chemical instruments and methods, etc., can solve the problem of uneven catalyst ratio and achieve improved temperature The effects of uniformity, temperature difference reduction, and consistent crystal form

Active Publication Date: 2018-06-12
ZHENGZHOU ZHONGNAN JETE SUPERABRASIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Manufacturing process of novel diamond composite column
  • Manufacturing process of novel diamond composite column
  • Manufacturing process of novel diamond composite column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take 500 parts by weight of the metal catalyst and 500 parts by weight of graphite, divide the metal catalyst into 10 parts, divide into 10 parts according to |d|=0.1, specifically 50.45, 50.35, 50.25, 50.15, 50.05, 49.95, 49.85, 49.75 , 49.65, 49.55, divide the graphite into 10 parts on average, each part is 50 parts by weight, mix one part of metal catalyst and one part of graphite evenly and press it into a 3mm graphite sheet, and press 10 parts of the pressed graphite sheet according to the metal The catalysts are arranged in a descending order from top to bottom to form layered graphite columns, and put into an iron cup to seal it. Put the iron cup into a six-sided top press, and keep it warm at 1500K and 5GPa for 20 minutes to produce diamond. synthetic column. During the manufacturing process, the arranged layered graphite columns and the prepared diamond synthesis columns are as follows: figure 1 shown.

Embodiment 2

[0041]Take 550 parts by weight of the metal catalyst and 550 parts by weight of graphite, divide the metal catalyst into 11 parts, divide into 11 parts according to |d|=0.1, specifically 50.5, 50.4, 50.3, 50.2, 50.1, 50.0, 49.9, 49.8 , 49.7, 49.6, 49.5, divide graphite into 11 parts on average, each part is 50 parts by weight, mix one part of metal catalyst and one part of graphite evenly and press into 3mm graphite flakes, and 10 parts of pressed graphite flakes According to the descending order of the metal catalysts from top to bottom, they are arranged into layered graphite columns, and put into iron cups for packaging. Put the iron cups into a six-sided top press, and keep them warm at 1500K and 5GPa for 20 minutes. Get a diamond synthetic column.

[0042] As shown in Table 1, the quality report sheets of the diamonds synthesized by the common process and the process synthesis column of the present invention are shown in Table 1. As can be clearly seen from Table 1, the ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J3/06
CPCB01J3/06B01J3/062B01J2203/0605B01J2203/061
Inventor 王义煌张相法赵海军位星
Owner ZHENGZHOU ZHONGNAN JETE SUPERABRASIVES