The industry's top wisdom and super-hard technology forum and then the academic exchange boom

On September 13th, the "21st China Superhard Materials Technology Development Forum" jointly organized by the China Machine Tool & Tool Industry Association Superhard Materials Branch and the State Key Laboratory of Superhard Materials Abrasives entered the second day. More than 260 registered representatives of the forum, a total of 23 reports, covering policy analysis, industry reports, market applications, new product introductions and other wonderful reports. The conference focused on the theme of “innovation, intelligence, integration and sharing” and discussed the development of the industry in the new situation. In his report, he pointed out: "Under the guidance of the new policy of national financial evasion, the real economic development environment is improving. Under normal circumstances, the economy of the super-hard materials industry is slower than the whole manufacturing industry, regardless of growth or decline. The manufacturing industry began to pick up last year, so China's super-hard industry began to pick up in the first half of 2017. From the statistics, the main economic indicators of the industry have increased to varying degrees, especially the negative growth trend of the total profit has changed over the past three years. It has achieved a good result of 16% growth, but it is still 6 percentage points lower than the growth of enterprises above designated size in the country. Secondly, the sales revenue of super-hard industry increased by 22% and the export volume increased by 18%. This also shows that both domestic and foreign markets have improved. It indicates that the industry economy has bottomed out in 2017 and has begun to stabilize and rebound. Moreover, 14 of the 16 listed companies in China's super-hard materials industry have seen revenue growth, of which 10 are more than 10%, and 7 are more than 20%. The growth rate of Sifangda is as high as 133.5%. This further illustrates the trend of the industry's stabilization and recovery. In short, most companies have struggled after several years. Refining and hard work, has laid the foundation for transformation and upgrading, accumulated the development energy, and hopes to work hard in the second half of the year, dragging the industry economy out of the trough, and returning to the track of rapid development with a new attitude. Next, Professor Wang Mingzhi of Yanshan University brought a special report entitled “Application of High Entropy Compounds in Superhard Materials”. Professor Wang Mingzhi proposed a new method of "alloying" covalent bond compounds: solid-state sintering without additives at lower temperatures, the resulting block has high hardness, good toughness and simple crystal structure. Further discussion of the prospects of such new systems in the field of superhard materials. Professor Zhu Yongwei of Nanjing University of Aeronautics and Astronautics presented an academic report entitled "High-efficiency and precision machining of zirconia ceramic backsheets". Professor Zhu Yongwei started from zirconia ceramic materials, analyzed its application and processing characteristics and process route, and proposed the subsurface damage and its influence on the processing process during the grinding and polishing process of zirconia ceramic backsheet, and summarized the technology of zirconia efficient processing. challenge.
Dr. Wang Haikuo, an associate professor at Henan University of Technology, presented an academic report entitled "Synthesis and Characterization of DMD, DD Bonded Polycrystalline Diamond and Binderless Nanopolycrystalline Diamond". Dr. Wang Haikuo introduced three types of polycrystalline diamonds in which DMD, DD and graphite were directly transformed into nanostructures, and analyzed their synthesis methods and advantages.
Professor Zhang Shaohe from Central South University presented an academic report entitled "Study on the Performance of Carcass of 3D Printed Grid Diamond Bits". Professor Zhang Shaohe designed the structure of the impregnated diamond bit matrix into a grid shape, and compared the sintering parameters of the new bit with different materials and its influence on the performance of the bit, as well as the rock breaking method of drilling the rock.
Professor Zhao Yucheng from Yanshan University brought an academic report entitled "Surface Ceramic Treatment Technology for Nanodiamonds". Professor Zhao Yucheng performed surface ceramization treatment on nano-diamond (ND) to obtain ND of core-shell structure: it can be stably dispersed after surface ceramization treatment and the oxidation temperature is increased, and the wetting and bonding with ceramic bond is improved and improved. The performance of ceramic bond nano-diamond superfine grinding tools. Mr. Liu Mingju, Applied R&D Engineer of Henan Unirene Carbon Synthetic Material Co., Ltd., presented an academic report entitled “From Diamond to Graphene”. In the report, Liu Mingju introduced the relationship between diamond and graphene and graphite, and the application of graphene and graphite anode materials in the fields of new energy, aerospace, smart wear and marine heavy anti-corrosion. Finally, the future development prospects of carbon system energy are prospected.
Zhu Jianhui, senior engineer of the State Key Laboratory of Superhard Materials Abrasives, presented an academic report entitled "Research and Application of Grinding Technology in the Development of Resin Superhard Abrasives". Mr. Zhu Jianhui analyzed the influencing factors in the manufacturing process of resin superhard material grinding wheel, and improved the state of grinding wheel grinding process through the improvement of manufacturing process and grinding method, and achieved good results.
Mr. Xiao Leyin, Senior Engineer of Guilin Institute of Mineral Geology, gave an academic report titled “Study on the Grinding Performance of Cubic Boron Nitride Belts”. Mr. Xiao Leyin used a cubic boron nitride belt to grind 45 steel with a corundum belt and compared it. It was found that the CBN belt has high grinding efficiency, good surface quality of the machined workpiece, long service life and excellent comprehensive performance.
Zhao Dongpeng, an engineer from Henan Sifangda Superhard Materials Co., Ltd., presented an academic report entitled "Development of Non-planar Polycrystalline Diamond Composite Sheets for Oil Drilling". Mr. Zhao Dongpeng developed a new type of non-planar polycrystalline diamond composite sheet for oil drilling. The effects of different tooth surface shapes and blade angles on its performance were investigated. The wear resistance, grinding load and fatigue resistance of the new products were found. The impact is improved.
Mr. Qu Jilai, an engineer from Henan Sifangda Superhard Materials Co., Ltd., presented an academic report entitled "Synthesis and Characterization of 58mm Diameter Submicron Ultrafine Particle Size Polycrystalline Diamond Composite Sheet". Mr. Qu Jilai introduced a large-diameter, ultra-fine-grained polycrystalline diamond composite sheet synthesized by it, and analyzed the difficulties and measures taken in the preparation process and its influence on the performance of the composite sheet.
Dr. Yang Dong from Huanghe Cyclone Co., Ltd. presented an academic report entitled "Main Factors Affecting the Performance of Pressureless Sintered Diamond Circular Saw Blades". Dr. Yang Dong investigated the effects of sintering temperature, holding time, diamond concentration and particle size on the performance of pressureless sintered φ112mm saw blade by single factor test. When the sintering temperature is 930 ° C, the diamond particle size is 35/40 mesh, the diamond concentration is 12%, and the holding time is 60 min, the φ112 saw blade has the best performance. Mr. Zhao Weitao, an engineer of Guangdong Benlang New Materials Co., Ltd., presented an academic report entitled "Non-Planar Polycrystalline Diamond Composite Sheets". Mr. Zhao Weitao found that under the experimental design conditions, the addition of non-metallic components will reduce the physical properties of the ceramic saw blade copper matrix, and weaken the carcass abrasiveness. At the same time, the sharpness of the ceramic tile is improved.
Mr. Yu Guanghua, senior engineer of Guangxi Liuzhou Huadi Prospecting Machinery Factory, gave an academic report titled “Impact of Air Relative Humidity on Diamond Selection”. Mr. Yu Guanghua analyzed the influence of ambient temperature and relative humidity on the quality of diamond selection, and proposed a new solution to solve the diamond selection process problem. Based on this scheme, a diamond selection with full heating temperature control digital display was developed. Forming machine.
During the technical exchanges of the forum, participating industry experts and scholars began to communicate on relevant technical issues. The forum gathered the top wisdom of the industry on the spot, and constantly collided with innovative thinking sparks in the process of communication, providing continuous innovation for the technological development of China's superhard materials industry. power.
The 21st China Superhard Materials Technology Development Forum was successfully completed after completing the established agenda.

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