China's diamond series standards revision work is progressing smoothly

In order to do a good job GB/T 6405-1994 "synthetic diamond and cubic boron nitride varieties", JB/T 7989-1997 "superhard abrasive synthetic diamond technical conditions", JB/T 6571-1993 "synthetic diamond and cubic boron nitride Method for determination of impact toughness, JB/T 7988.1-1999 "Method for determination of compressive strength of superabrasives", JB/T 7988.2-1999 "Revision method for inspection of impurities in superabrasives". In December 2006, the National Abrasives Standardization Technical Committee sent a letter from the China Machine Tool & Tool Industry Association Superhard Materials Branch and Zhengzhou Abrasives Mill in the letter [2006] No. 032, "Revising Matters Concerning the Revision of Synthetic Diamond Standards". Research Institute, Henan Yellow River Cyclone Co., Ltd., Nanyang Zhongnan Diamond Co., Ltd., Henan Huajing Superhard Materials Co., Ltd., the letter requires all units to send personnel to participate in the Diamond Standard Working Group to carry out the revision of the diamond series standards.
The Diamond Standard Working Group was formally established in January 2007. The working group is the leading group and the drafting group. The leading group is mainly responsible for the coordination of the standards revision of the participating units and the progress of the work. The drafting group is mainly responsible for the specific revision of the standard drafting. jobs. The Standard Working Group established this standard revision work to meet market demand, and developed advanced standards that are in line with the development of the industry, can guide industry production, and promote trade exchanges at home and abroad. The working group held a number of standard coordination meetings to discuss the specific revision of various standards, to investigate the current technical level and market conditions of the domestic and international synthetic diamond industry, and to do a lot of experimental verification work. After more than a year, in addition to JB/T 7989-1997 "Technical Conditions for Superhard Abrasive Synthetic Diamond" is also supplemented with test data. The other four standards completed the drafting of the standard in July 2008, and sent the production and use units of the industry for comments. At the end of September 2008, the National Abrasives Standardization Technical Committee held a standard review meeting, which reviewed and approved four standards, which have been reported to the higher authorities for approval.
 

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