The meeting was hosted by the Secretary General of Hunan Superhard Materials Association.
Professor Wang Guangzu, Honorary President of the National Superhard Materials Expert Committee, delivered the opening speech.
Today, we held a national superhard material conference in the garden-style city-Zhuhai. Everyone gathered to celebrate the 45th anniversary of the birth of synthetic diamonds in China, and expressed warm welcome to everyone.
Since December 6, 1963, the first synthetic diamond was born in the high-pressure laboratory of the General Machinery Research Institute of Beijing First Ministry of Machinery Industry, which only kicked off the prelude of synthetic diamond manufacturing technology. After 1964, the Zhengzhou Abrasives Grinding Research Institute and the Jinan Foundry and Forging Machinery Research Institute jointly developed the hinged six-face press and its subsequent large-scale, which laid a solid foundation for the development of China's superhard materials industry. After more than 40 years of ups and downs, it has not only become a major producing country with an annual output of more than 4 billion carats of synthetic diamonds, but also the level of high-grade diamond production technology has entered the world's advanced ranks.
However, the development of diamond products is lagging behind. It is gratifying that this phenomenon has attracted everyone's attention. Therefore, in recent years, diamond products and cemented carbide tools have developed rapidly, especially the development of mining in China in recent years, creating a good opportunity for the development of mining cemented carbide tools. The continuous innovation of mining cemented carbide technology, the increasing variety of products, especially the superhard material and hard alloy docking, has produced new varieties of high-tech content, such as: diamond drill bits, knives, drills, drills, high Wind pressure downhole drill, roller drill, ball bit and so on. This provides a new way to upgrade the cemented carbide products. At the same time, it also expands the application range for diamonds and promotes the development of marginal disciplines combining superhard materials and hard alloys in China.
Dean Lu Zhi of Guilin Institute of Mineral Geology made a report entitled "Technical Status of PCBN Materials in China", pointing out that its current technical status is: sustainable development, long-lasting, good prospects; serialization and refinement of foreign products; domestic product varieties Single, extensive; technical threshold is high, difficult; price difference is large, 3 to 5 times, the demand of the automotive industry is almost imported.
Through research, the uniformity of the domestic PCBN product organization is improved, and the cutting performance is close to that of foreign countries under low speed conditions.
There are problems: single variety, low CBN content, fine particle size 0.5μm; product film diameter is too small; product performance is unstable, the performance of PCBN is uneven, the performance of each part is inconsistent; PCBN surface has exuded metal phase.
Professor Fang Xiaohu from Shanghai Qishi Superhard Materials Co., Ltd., in the report “Research and Significance of Inclusions in Crystal Inclusions and Superhard Materials in Natureâ€, an overview of the study of crystal inclusions in nature; research on natural diamond inclusions abroad The research and significance of inclusions in superhard materials; the main types and forms of inclusions in superhard materials; the hazards of inclusions in superhard materials; the analysis of the formation of inclusions in superhard materials; the inclusions in superhard materials The preliminary discussion of the method of elimination and other issues are explained.
Professor Wang Guangzu of Zhengzhou Abrasives Grinding Research Institute pointed out in the report that “promotion and application will be the bottleneck of sustainable development of nano-diamondsâ€, pointing out that in 1971, the Institute of Mechanics of the Chinese Academy of Sciences and the Institute of Physics first synthesized synthetic diamonds in China by explosion method. In 1975, the Institute of Physics of the Chinese Academy of Sciences and the 701 Institute of Guangdong, the cubic boron nitride was synthesized by the explosion method; in 1993, the Institute of Mechanics of the Chinese Academy of Sciences created the first large-scale explosive synthetic diamond plant in China, each kilogram of explosives. The diamond production is about 60 carats and the annual production capacity is 1 million carats.
In 1993, the Lanzhou Institute of Chemical Physics of the Chinese Academy of Sciences used the negative carbon in negative oxygen balance explosives to develop nanodiamonds in China. Since 2000, nano-diamond production lines have been established in Lanzhou, Xi'an, Shandong, Henan, and Shenzhen. It is estimated that the annual production capacity of the country has exceeded 100 million carats.
The main applications of nanodiamonds are: ultra-precision polishing, for lubrication, for composite plating, for coatings, as stealth materials, for the electronics industry, as biomedical materials.
In recent years, more than three or forty units of Xi'an Jiaotong University, Tsinghua University, Fudan University, Yanshan University, Harbin Institute of Technology, and Changsha Research Institute of Mining and Metallurgy have joined the development and application of nanodiamonds. It shows that a high-quality research and development team is basically formed. A lot of technological achievements have been made, but most of these results are still in the laboratory stage. How to turn phase results into productivity as soon as possible is a practical problem that needs to be solved urgently.
For the sustainable development of nano-diamond production, it is necessary to reduce intermediate links and accelerate the process of transforming scientific and technological achievements into productivity and commodities; a new scientific and technological achievement can only be transformed into products and open up the market to form commercial mass production and mass sales. Only to achieve ultimate success. In the future, research and development of applications should be placed at the top of the list. Solve the "bottleneck" problem of further development of nanodiamonds.
Professor Dong Xinye, Secretary General of China Ganggang Steel Drilling Association, said in the article "Problems and Development Ideas in the Brazing Steel Drilling Industry":
1. With the advancement of social economy and construction equipment, brazing steel brazing products will be developed from output to quality, from price to value, and the types of products used will be more and more, and the requirements for quality will be higher and higher. And quality is the basis for ensuring the benefits of the company.
2. The phenomenon of spurt growth of low-tech brazing steel brazing products may not be reproduced. It is clear that the core issue of the next step of competition will be related to the rise and fall of enterprise development. Researching the market, segmenting markets, understanding products, mastering products, and analyzing user needs should be the key to making development decisions.
3. Although the competition in the brazing steel brazing market is intensifying, it does not mean that all enterprises will be affected. The market competition will only sound the alarm for the enterprises that are insufficient in strength and stagnant. For the powerful enterprises, we must continue to surround them. Key points in variety, technology, quality and brand work well, develop products, open up markets, and make enterprises grow bigger and stronger in the market.
4. The development of rock drilling tools manufacturers in the fields of rock drilling tools and geotechnical drilling tools will expand the development space of enterprises.
Zhang Xiaofu from the School of Materials, Central South University, made a detailed discussion on the research and development of the new ceramic diamond wheel and its progress.
Zhengzhou Kuansaipu Superhard Material Technology Co., Ltd. has always buried Zhang Zhan, explaining the important technical significance and value of the development of the "sliding double piston press" project. Once this technology is successful, further enlargement of ultrahigh pressure equipment New technical support will be provided.
The report of the meeting is rich and exciting. More than 130 delegates from all over the country.
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