Zhongnan Diamond and Zhongnan Jiete Company's PDC and PCBN research projects passed provincial appraisal
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On December 3, 2009, entrusted by the Henan Provincial Department of Science and Technology, the Henan Provincial Commission of Science and Technology for National Defense organized an expert in Zhengzhou to host the “Φ45mm high-grade diamond polycrystalline composite sheet†completed by Zhongnan Diamond Co., Ltd. and Zhengzhou Zhongnan Jiete. The scientific and technological achievements appraisal meeting of Zhengzhou High-tech Zone Innovation Fund Project “High-speed and high-toughness overall CBN cutting tool†completed by Superhard Materials Co., Ltd. The director of the Department of Science and Technology of Henan Province, the deputy director, the director of the Science and Technology Quality Supervision Department of Henan Provincial Science and Technology Commission, and the director of the Science and Technology Bureau of Zhengzhou High-tech Zone attended the meeting. The appraisal committee consisted of 7 experts from the industry. composition. The meeting was presided over by Wang Xifa, Director of the Achievements Department of the Henan Provincial Department of Science and Technology. The appraisal committee listened to two project reports, carefully reviewed the relevant appraisal materials, watched the samples, and formed an appraisal opinion after questioning and discussion. Its main evaluation is as follows:
The PCBN project has developed a formula for high-speed and high-toughness overall PCBN cutting tool by optimizing the particle size composition and binder composition of CBN micro-powder; after high-temperature and high-pressure sintering process for raw material purification and self-research, it has high wear resistance and resistance. A new product with excellent impact performance. The product has been proved to be suitable for high-speed intermittent and semi-interrupted cutting. The main performance has reached the advanced level of domestic similar products and the domestic leading level. It has filled the domestic blank and can replace imported, and has the application value and broad market prospect.
The PDC project introduces nanodiamonds for the first time in the polycrystalline layer to increase the bond density of the DD bond and strengthen the bond strength between the diamond layer and the cemented carbide substrate; through diamond purification, improved equipment monitoring systems, optimized assembly and sintering processes, A Φ45 mm high grade diamond polycrystalline compact for cutting was prepared. The use of domestic and foreign users proves that the product has excellent performance, social and economic benefits, and the main technical indicators have reached the leading level of domestic similar products.
The two project products that have passed the identification have been formed into various specifications and put into mass production and have been put into the domestic and foreign markets. PDC specifications are Φ31mm, Φ45mm, thickness 1.6mm, 2.0mm and 3.2mm, diamond grain size is 35μm, 25μm, 10μm, 5μm have also been developed samples; overall PCBN specifications are Φ13mm, Φ16mm, Φ19mm and Φ25mm, thickness Available in 5 mm, 8 mm and 10 mm to suit different customer needs.
Cutting PDC and PCBN are put into production in large companies with many advantages in technology, capital, management, etc., which will effectively promote the pace of product structure adjustment of the entire industry, and guide industry enterprises to carry out new diamond grinding materials to or near the world advanced level. One round, higher level product competition, thereby further enhancing the overall competitiveness of China's superhard materials industry, and gradually achieving the great goal of superhard material powers!
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