Seminar on participation in the development policy recommendations of the superhard materials and products industry
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The meeting coincided with the good news that the country invested 4 trillion yuan to stimulate domestic demand in response to the world financial turmoil, which enhanced the confidence of the companies and experts in the meeting. Entrepreneurs and experts at the meeting gave a speech and actively advised. What the delegates are most concerned about, and the most talked about, is the topic that the country has excluded from the "six-sided top press diamonds in high technology."
The meeting representatives believe that the diamond press is only a means of synthesizing diamond, whether it is a two-side press or a six-sided press, as long as it can synthesize high-grade diamond. And how can we simply exclude the diamonds synthesized by the six-sided press from high-tech products? This kind of formulation is not scientific in itself, so it is metaphysical.
The six-faced diamond synthetic press and synthetic process are the models and processes that have completely independent intellectual property rights in China. The practice of Chinese scientists and technicians has experienced 45 years of innovative development, which proves that the design of China's six-sided press structure is reasonable. The temperature and pressure control is advanced, the large-scale press is progressing rapidly, the scale production is easy, the synthesis cost is low, the diamond quality is good, and the six-face press is also synthesizing cubic boron nitride and polycrystalline sintered body (PCD, PDC, PCBN). ) and other aspects have obvious advantages and have strong competitiveness in the international arena. Especially in recent years, China has made rapid progress in the enlargement of the six-face top press. The cylinder bore of the press has been developed from the original 230mm to the current 650mm and 1000mm; the tonnage of the press has changed from the original 6×600MN to the current 6×7850MN; The electro-hydraulic system and the temperature and pressure have achieved fine control, which can maintain the pressure for 20 days in continuous insulation; the single-synthesis output is from a few carats to 600 carats now; the product quality has achieved leap-forward development (TI, TTI difference is less than 3, enter The world ranks first; 20/30 coarse-grain diamond can be mass-produced, and the yield of high-grade diamond can account for 50%; more gratifying is the large single-crystal diamond of 6-10mm can be synthesized on a six-face press. At present, China's six-sided synthetic diamond quality is the same as that of Element Six and GE's products. Taiwan's Jiangxin Company uses the coarse-grained diamond produced by Nanyang Zhongnan Jingang Company of China to produce a wide variety of accessories such as rings and necklaces. Achievements forced foreigners to bow down and admit defeat. In the 1970s and 1980s, China spent more than 100 million yuan to buy German and American double-faced presses. It is almost a pile of scrap iron. Even China has long been engaged in two sides. Technicians also have to admit the advantages of the six-sided press. In recent years, Element Six of the United Kingdom purchased China's six-sided top synthetic press and set up a factory in Suzhou, China; the United States, Japan, South Korea, Japan, India, Taiwan and other countries and regions have purchased China's six-face press, Guangxi It is not worthy of the Chinese to be proud and proud of the export of hundreds of six-sided top presses from Guilin Metallurgical Machinery Factory. How many industries or industries in China have done this?
However, when the country formulated high-tech products, it did write the words “except for six-sided diamondsâ€, and excluded the synthetic diamonds of six-sided top presses from high-tech products. This is probably the Chinese two-sided top and six-sided top academics. The product of the faction dispute? ! The meeting representatives believed that this not only hurts the feelings of China's super-hard materials, but more importantly, it weakens the international competitiveness of China's super-hard materials industry, which is not conducive to the development of China's super-hard materials industry and should be corrected. (Liu Jinchang)