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Deputy Director Ma Shimin of Henan Science and Technology Department led a team to form an expert group led by Professor Zou Guangtian, a professor at Jilin University and director of the State Key Laboratory of Superhard Materials of Jilin University, to visit the company for the acceptance of the "large diameter polycrystalline diamond composite sheet" project. On June 5th, Deputy Director Ma Shimin of the Science and Technology Department of Henan Province led a team to form an expert group led by Professor Zou Guangtian, a professor at Jilin University and director of the State Key Laboratory of Superhard Materials of Jilin University, to visit the company, a major science and technology project for Henan Province. The "large diameter polycrystalline diamond composite sheet" project was accepted. The expert group listened to the work summary report of the company's project team, reviewed the relevant materials, and inspected the production site. After the inquiry and discussion, the acceptance opinions were formed: the project has been basically completed and reached the “Henan Province Major Science and Technology Special Task Contractâ€. All indicators require better social and economic benefits. Unanimously agreed to pass the acceptance. The "large-diameter polycrystalline diamond composite sheet" project implemented by the company is a major science and technology project of Henan Province in 2009 (project number 091100210500). The company began research and development of the project in 2008. Polycrystalline diamond compacts have excellent physical and mechanical properties and are widely used in major industrial fields such as automotive, aerospace, precision and ultra-precision machining, oil drilling, electronics, wood processing and weapons. In recent years, the developed countries in the world are gradually popularizing and applying in the fields of precision machining, oil extraction, automobile manufacturing, military and aviation technology. According to industry statistics, during the “Twelfth Five-Year Plan†period, high-ends such as aerospace, rail transit and ocean engineering The equipment manufacturing industry is expected to require 5,000 tons of high-precision indexable carbide cutting tool materials. After 2020, the development of aerospace industry such as large passenger aircraft requires high-performance aluminum materials of 100,000 tons per year, and the proportion of carbon fiber and composite materials will increase significantly. China's annual market capacity of super-hard composite materials and products is 6.2 billion yuan, and the import volume will reach 4.5 billion yuan, which has broad market prospects. As the quality and manufacturing level of polycrystalline diamond compacts continue to increase, polycrystalline diamond composites will gradually replace traditional materials. In recent years, the company has been relying on the existing technology reserves to take the lead in introducing, digesting, absorbing and re-innovating research roads while steadily developing the main business of super-hard materials. At the same time, it has established close technical cooperation relationship with a number of internationally renowned superhard materials research institutions such as the State Key Laboratory of Superhard Materials of Jilin University, Zhengzhou Sanmao Institute and German Kstar Diamond Company. In order to formulate the company's development strategy, the company listed superhard composite materials and products as the core projects of the company's key development during the “Twelfth Five-Year Plan†period, and formulated “three guarantees and three guarantee measuresâ€, namely, setting personnel, determining responsibilities, and awarding fines. , policy guarantee, system guarantee, and fund guarantee a series of supporting measures to ensure the smooth implementation of the project. The company's "large-diameter polycrystalline diamond composite sheet" project is independently developed through computer simulation of synthesis chamber temperature distribution, synthetic assembly block optimization design technology, raw material comprehensive clean processing technology, and high-temperature and high-pressure precision measurement and control synthesis technology. A PCD composite sheet having a diameter of 48 mm and a diameter of diamond micro-particles of 10 μm and 25 μm was synthesized in a six-face high-temperature high-pressure synthesis apparatus. The innovations of the project are as follows: (a) Using a new type of pressure transmitting medium to make the high temperature and high pressure synthesis chamber more stable in chemical and physical properties; (b) Computer simulation of the indirect heating design of the synthesis chamber to achieve uniform cavity temperature distribution; (c) Precision temperature and pressure measurement and control technology to optimize the high temperature and high pressure synthesis process; (d) Chemical cleaning treatment technology for diamond micropowder to achieve high concentration of DD in the polycrystalline layer to achieve higher wear resistance and Impact resistance. The company has state-level enterprise technology center, enterprise post-doctoral scientific research station, Henan Province superhard composite materials and products engineering technology research center and other scientific research institutions, which has reached the domestic frontier technical strength and guaranteed the smooth implementation of the project. The company has core technology in the development of high temperature and high pressure synthetic equipment, diamond and products, superhard composite materials and products, gem-quality large single crystal, conductive diamond and other products, forming 139 intellectual property rights, including 12 invention patents, in superhard materials. The comprehensive strength of the industry ranks among the top in the world. In the process of industrialization of the project, the company strictly adopted the “three wastes†internal control standards stipulated in the “Environmental Protection Regulations for Construction Projects†[No. 253 of the State Council] promulgated and implemented by the State, so that the processing technology of each process can be treated harmlessly. And all kinds of pollutants will be discharged after being treated. The implementation of the project will comprehensively enhance the company's super-hard composite material production scale, research and development and export earning strength. By cultivating the core key technologies of independent intellectual property rights, effectively alleviate the bottleneck of industrial development, accelerate the optimization and upgrading of industrial structure, and promote China's super-hard composite The industrialization process of materials has promoted the sustained and rapid development of China's superhard materials and products industry, enhanced the competitiveness of the international market, and created a complete raw and auxiliary materials, superhard materials and products, superhard composite materials and materials needed for the superhard materials industry. The industrial chain of closed-loop development of products and super-hard materials post-processing inspection technology has obvious social benefits.