On the second day of the 7th Zhengzhou International Superhard Materials and Products Symposium and the 55th Anniversary of the Celebration of the Birth of China's Synthetic Diamonds, nearly 20 special reports were presented. The interactive atmosphere of the live-action questions was active, and the heat of the conference venue continued to heat up. At 8:30 in the morning, under the theme report of Li Zhihong, a senior consultant of the Superhard Materials Branch, today's meeting officially kicked off.

Li Zhihong, senior consultant of the Superhard Materials Branch of China Machine Tool Industry Association, made a report on "Innovation and Development, Renewing Brilliance - Celebrating the 55th Anniversary of China's Diamond Birth".

He said that in the past five years, the main customers of the super-hard materials industry such as stone, floor tiles, construction projects, railways, automobiles and electronic products have weak market demand and weak growth. As a result, the super-hard materials industry once fell into a trough. However, with the explosive growth of the home appliance and photovoltaic market in 2017, the super-hard materials industry has swept the past downturn, and the development of ultra-precision tools, diamond micro-powder and diamond wire saws has ushered in a rising period. Through customs-related statistics, domestic demand for high-end imported grinding wheels, knives, saw blades and other products is large, reflecting the overall development of the industry. At the same time, the types and amounts of export products are on the rise, and the achievements in innovation and development of the industry are gradually increasing.

He also said that in the past five years, the industry has developed a number of new super-hard materials and products that fill the domestic gap and catch up with the world's advanced level, such as diamond nano-polycrystalline, gem-quality large single crystal, and flaky diamond for tool. At the same time, it has also developed new production equipment such as diamond synthetic core column and pyrophyllite component automatic production line, orderly arranged diamond cutter head automatic high-efficiency production equipment, workshop automation intelligent production line. The emergence of these new technologies, new products and new equipment has effectively promoted the transformation and upgrading of the industry.

Finally, it analyzes the huge market space and emerging development direction in the future, and points out the main problems in the development of the industry, such as weak basic research and shortcomings of refined products, and proposes to follow the national strategy, break the ideological shackles, and move from manufacturing to creation. A few suggestions. It is believed that China's super-hard materials industry will firmly follow the path of innovation and development and create greater glories under the wave of smart manufacturing in the world.

Xie Jin, School of Mechanical and Automotive Engineering, South China University of Technology, gave a report titled "Technology and Application of Micro-tip Dressing and Micro-grinding of Diamond Wheels". Developed micro-precision in-situ precision dressing technology for super-hard diamond grinding wheels to study the fine precision grinding technology of sapphire, monocrystalline silicon and other materials. Developed prototype products such as microfluidic chips for virus detection, energy-saving curved microprism array light guide plates, high-efficiency amorphous silicon battery substrates, and quartz micro-groove array substrates with fiber optic integrated docking. The micro-groove array structure tool has been developed to improve the dry cutting performance and to cut the free-form metal core of the microarray structure with high efficiency.

Wang Shanzhi of Yanshan University made a report entitled "The Road to Industrialization of Nano-diamond Polycrystalline (NPD)". The report theoretically describes the feasibility of preparing NPD with carbon nano-onion as precursor in a lower pressure, and prepares a series of Vickers hardness of 40~150GPa under the pressure of 5~10GPa at 10GPa+1800°C. Samples with a diameter of nearly 10 nm/Vickers hardness of 130-150 GPa were prepared under conditions, and the problems encountered in industrial production of NPD and the solution to the problem were further analyzed.

Shen Yongkang of Taipei Medical University gave a report entitled "Application of Diamond in Medicine". The report covers the wide application of biomedical stents in biomedical applications, making the surface properties of biomedical stents more hydrophilic and increasing the strength to adapt to bone repair. It is a detailed introduction of polycaprolactone in different proportions. A biomedical stent made of diamond and conductive diamond to investigate the properties of conductivity in bone repair.

Li Chengming from the New Materials Technology Research Institute of Beijing University of Science and Technology gave a report entitled "Preparation and Application of Six Diamond Self-Supporting Thick Films". The report combines the research of diamond self-supporting film in Beijing University of Science and Technology, compares the characteristics of the preparation method of diamond self-supporting film and the research and application status at home and abroad, discusses the high quality and large-size growth method and development direction of diamond single crystal. .

Zhang Shaohe of Central South University made a report entitled "Technical Difficulties and Solutions for 3D Printing Impregnated Diamond Bits". The process and key technologies of 3D printing impregnated diamond bits are elaborated, such as process parameter design, carcass alloy material preparation, diamond particle size selection and concentration optimization. Summarize key technical barriers and corresponding countermeasures, including the size of printing equipment, the limitation of protective gas on the size of the drill bit, the requirements of the printing process on the alloy powder, the influence on the performance of the carcass, the limitation on the particle size and concentration of the diamond, and the efficiency of the drill bit. Impact and its impact on bit life.

Zhu Yongwei of Nanjing University of Aeronautics and Astronautics gave a report titled "Preparation, Evaluation and Application of Hydrophilic Consolidated Abrasive Pads". The historical background of hydrophilic bonded abrasive mats is briefly introduced. The characterization method of hydrophilic bonded abrasive mats is proposed. The key technologies to be solved for the grinding and polishing of bonded abrasive mats are analyzed. The hydrophilic solids are introduced. The application of the abrasive pad in the grinding and polishing of several typical workpieces. The development direction of the next hydrophilic fixed abrasive pad was proposed.

Hou Hongxia, a steel research and development technology company, made a report entitled "Determination of C, O, N, Mg, Ca, Fe, Na in Hexagonal Boron Nitride". A method for accurately determining oxygen and nitrogen in cubic boron nitride powder was established by pulse heating inert gas fusion-thermal conduction method. A method for accurately determining carbon in hexagonal boron nitride powder was established by high frequency combustion infrared washing method. Microwave digestion-ICP-OES established a method for the determination of calcium, magnesium, sodium and iron in hexagonal boron nitride. The method has been verified to meet the production testing requirements.

Yang Lixia of Yucheng Huifeng Diamond Technology Co., Ltd. made a report entitled "Total Quality Control of Diamond Micropowder". It mainly introduces the quality control methods and inspection methods of diamond micropowder from raw materials to production process, standard acceptance, finished product delivery, international advanced equipment using different measurement principles, and data analysis to characterize the product in terms of particle size distribution and particle morphology. stability.

Peng Jin of Henan University of Technology made a report on "Research and Progress of Resin Diamond Belt". The report introduces the research status, application fields, preparation process difficulties and binder modification research of resin diamond abrasive belts at home and abroad. Through comparison and analysis with the main products of 3M, Swiss KGS and other foreign companies, some suggestions for the preparation and application of domestic diamond abrasive belts are put forward.

Li Jinxing of Xiamen Jinlu Special Alloy Co., Ltd. made an analysis entitled "Experimental Research on Laser Processing of Diamond Tools", which compared the efficiency of laser tool electrolytic machining with laser processing, and introduced the superiority of grinding process compared to electrolysis and laser processing. The cutting edge quality corresponding to the electrolytic processing and the laser processing, and the higher cutting edge quality can obtain a longer processing life.

Luo Jun of Yucheng Huifeng Diamond Technology Co., Ltd. made a report entitled "Mechanical Preparation of Single Crystal Nanodiamonds". A mechanical method for preparing single crystal nanodiamonds is mainly introduced. A high-purity single crystal nano-diamond was characterized by X-ray diffraction, disk centrifugal particle size analyzer, TEM and scanning electron microscopy (SEM). Its particle size is about 50 nm, and it can be stably dispersed in a water-based solution by surface modification.

Wang Shuai of Zhengzhou Abrasives Grinding Research Institute Co., Ltd. made a report entitled "Study on the Single-layer Electroplating Wheel Dressing Method Based on Canny Moment". Using a CCD camera to capture the working layer of a profiled single-layer plated CBN grinding wheel, using the layer stitching algorithm and the Canny moment to detect the pixel edges, compiling a Matlab-based program to find a reasonable amount of trimming, and having a visual tool setting function in the home-made On the dressing platform, the carbon sheet is ground by a grinding wheel, and the precision change of the carbon sheet before and after the dressing of the grinding wheel is tested to verify the feasibility of the dressing method. After the dressing, the dimensional accuracy and surface roughness of the working layer of the grinding wheel are greatly improved. The single-layer plating CBN grinding wheel dressing method based on the Canny moment is feasible.

Li Rui of Changchun University of Science and Technology made a report entitled "Development and Application of High Pressure Synthetic Temperature Field Simulation APP". The report details the necessity and feasibility of applying finite element simulation technology to high pressure synthesis process design. Partially replacing the real trial and error experiment with a virtual simulation experiment, which provides an efficient and economical solution for testing the assembly design and heating process design of the “large cavity”. The report shared a high-pressure temperature field simulation APP. Faced with a user-friendly interface, field engineers can easily modify parameters and run simulations without having to know the underlying modeling techniques in advance.

Guangxi Liuzhou Huadi Prospecting Machinery Factory made a report entitled “Summary of China Diamond Selector Development” in Yu Guanghua. This article mainly describes the beginning of the first diamond shaper, to the success of imitation, and then to independent research and development, and continuous improvement and innovation, until today developed a variety of models to meet different needs of various types of machines, the system introduced the diamond selection The development trend of the machine has been changing all the time, and it provides suggestions and opinions on the future development focus and direction of the selection industry.

Li Zhengxin from Henan University of Technology made a report entitled "Research on the Characterization and Regulation of the Abrasive Grain Height of Diamond Abrasives". In diamond grinding tools, the height of the effective cutting edge directly affects the sharpness of the grinding tool. Therefore, the characterization and regulation of the height of the cutting edge is the key technology for preparing high-performance grinding tools and exerting their grinding performance. The report introduces the evaluation parameters, detection methods and control techniques of the edge height of diamond abrasive tools, analyzes the problems in the research field, and puts forward suggestions for future research directions.

Ding Yulong, State Key Laboratory of Superhard Materials Abrasives, Zhengzhou Abrasives Grinding Research Institute Co., Ltd. gave a report titled "Development Status of Precision Grinding Technology for Silicon Wafers and Diamond Grinding Wheels". Wafer precision grinding is an important part of the IC industry chain. With the rapid development of the semiconductor industry, the tool technology related to precision grinding of silicon wafers is maturing. The report summarizes the history of silicon wafers, grinding technology and grinding wheels. With the large diameter of silicon wafers and the thinning of silicon wafers, the precision grinding technology of silicon wafers has shifted from rotary rotary grinding to wafer spin grinding, and a large number of new technologies and products have emerged.

Zhu Jianhui, State Key Laboratory of Superhard Materials Abrasives of Zhengzhou Abrasives Grinding Research Institute Co., Ltd., gave a report titled "Research on the Method of In-position Detection of Key Parameters of Super Hard Grinding Wheels". A technique for in-situ detection and evaluation of super-hard material grinding wheel is proposed: collecting raw data, performing noise reduction, filtering, feature point calculation, theoretical model construction, calculation and analysis, and finally obtaining high-accuracy grinding wheel characteristic data. The results show that the detection repeatability limit of grinding wheel diameter jump, loss value and surface state under the condition of 95% confidence probability is less than 1.2μm, 1.5μm and 0.6μm, which has high matching with grinding performance and can meet superhard grinding wheel. Testing requirements.

The on-site Q&A session pushed the meeting to a climax

Finally, in the warm applause of everyone, the 7th Zhengzhou International Superhard Materials and Products Seminar and the 55th Anniversary Celebration of the Birth of Chinese Synthetic Diamonds ended today! The conference covers functional applications of super-hard materials, application of grinding and cutting tools, research on preparation of super-hard materials and auxiliary materials, production of super-hard materials and products, and development of testing equipment, etc. The integration and development of research and development has built a platform to provide channels for investment, trade and information exchange!

On the 26th, the conference will organize representatives to visit the Wuxi Plant of Fenike Superhard Materials Co., Ltd. and Jiaozuo Tianbao Yuxiang Machinery Technology Co., Ltd.

Furniture Handle

Furniture Handle,Minimalist Glass Door Handle,Copper Black Circular Handle,Zinc Alloy Modern Handle

Zhaoqing Muyi Hardware Products Co., Ltd , https://www.mywjhandle.com