China (Zhengzhou) International Abrasives Grinding Technology Development Forum Summary
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Leveraging the macro-economy to improve the super-normal development of the Dongfeng super-hard materials industry ------Analysis of the economic operation of the super-hard materials industry in 2010 Li Zhihong, Zhao Bo China Machine Tool Industry Association Superhard Materials Branch / Zhengzhou Abrasives Grinding Institute, Zhengzhou 450001 Abstract: Based on the 2010 statistics, this paper proves the supernormal development of the industry by comparing the macroeconomic data of national GDP and import and export with the main economic indicators of the superhard materials industry: the growth rate of total industrial output value. Up to 30.35%, industrial added value growth rate of up to 53.36%, total profit growth rate of 115.42%. Such rapid development still can not meet the market demand, all kinds of product manufacturers are basically full of orders, delivery is urgent, a party is thriving, and structural adjustment has achieved remarkable results. This paper gives 18 statistical data sheets and analyzes their data. On the one hand, it shows the strong position of China's superhard materials industry in the world market. Diamond has accounted for 90% of the world total, and cubic boron nitride has occupied the world. 60% of the total, the two materials have reached or approached the world's advanced level; on the other hand, it is pointed out that the large amount of such products in China is low, high and low is a prominent feature, indicating that the restructuring of the industry still has a long way to go, technology development is The eternal theme of corporate development. The extreme apex design of diamond and CBN abrasive ceramic bond Li Yinjiang 1,2 Liu Dongliang 1 Wang Yanjuan 1 Liu Chao 1 (1 Yalong Superhard Materials Co., Ltd.) (2 China Abrasives Import and Export Corporation) Abstract: This article uses the mixing experiment The quaternary extreme apex design in the design studies the composition of the diamond and CBN abrasive ceramic bond, and gives the ratio of the diamond abrasive ceramic bond with a melting temperature of 715 ° C and the CBN grinding tool with a melting temperature of 810 ° C. The ratio of ceramic binders and computerized processing of experimental data, preliminary results. Research on the manufacturing process of 65Mn matrix laser welding saw blade Fang Liling Lin Hengwu Qiu Yuming Dong Xianlong (Jiangsu Fengtai Diamond Tools Manufacturing Co., Ltd. 212310) Abstract: This article Mainly adopting 65Mn material matrix to achieve the requirements of laser welding process by laser welding and tempering process. By comparison, it is found that the bending strength of 65Mn matrix laser welding saw blade treated by specific process reaches the ultimate resistance of saw blade welded by 30CrMo material substrate. Bending strength, which can fully meet the strength requirements of laser welding, the method is laser welding With manufacturers to reduce costs, improve market competitiveness of great significance. Application of Rational Design of Graphite Mould in Diamond Tools Fang Liling Lin Hengwu Qiu Yuming Dong Xianlong (Jiangsu Fengtai Diamond Tools Manufacturing Co., Ltd. 212310) Abstract: This paper mainly describes the current background of energy saving and emission reduction, through the manufacture of diamond tools. The graphite mold used is rationally designed and arranged, and compared with the traditional graphite mold, the new rationally designed mold has more diamond heads per frame, and the electric energy and sintering volume used for sintering are more fully obtained. Use. It is believed that under the economic situation of low carbon and energy saving, through the optimization design of the traditional graphite mold structure, it is a big measure for the diamond tool industry manufacturers to reduce costs and increase efficiency. Quality Control of Synthetic Diamond Powder Columns Yushu Lianghubei Exin Diamond Material Co., Ltd. 436056 Ezhou Abstract: This paper is aimed at how to do quality management and control in the process of mass production of synthetic diamond powder column, so that its quality is excellent and its performance is stable. In-depth research and analysis. Make full use of ISO9001.2008 quality management system, monitor the operation status of quality functions of various departments on the site, set quality management points in key processes reasonably, apply quality management tools to analyze and process their test data, and make the production process of synthetic diamond powder columns The quality is always in a stable and controlled state to improve the conformity quality of the products, and the type test of the applicability quality of the products, and the abnormal quality fluctuations appear to be extended and tracked to ensure the quality of the synthetic diamond powder column. , stable performance. Preliminary study on ceramic bond diamond abrasives for ceramic tile processing (Hebei Province Diamond Tool Engineering Technology Research Center 050035 Shijiazhuang) Abstract: ZnO, SiO2 and B2O3 were used as the main raw materials, and ZnO-B2O3 was prepared by high temperature melting method. - SiO2 system ceramic bond. The properties of the ceramic bond were tested by adjusting the content of each oxide component in the ceramic bond and using an electronic scanning electron microscope (SEM) test instrument. Finally, the chemical composition ratio of the ceramic binder was determined. Keywords: ceramic tiles; vitrified bond; diamond abrasive catalyst stickiness effect on the growth of high-quality carat grade type Ib diamond single crystals [Corresponding author: Jia Xiaopeng, Fund Project: the National Natural Science Foundation of China (50572032); Dr. Luoyang Institute of Technology research Startup Fund (2010BZ02)] Xiao Hongyu 1 Qin Yuxi 1 Li Shangsheng 2 Ma Hongan 3 Jia Xiaopeng 3 (1. Department of Mathematics and Physics, Luoyang Institute of Technology, Luoyang, 471023) (2. School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, 454000) (3. Jilin University State Key Laboratory of Superhard Materials, Changchun, 130012, China) Abstract: The synthesis of high quality carat grade Ib diamond single crystals was carried out under high temperature and high pressure conditions. The paper focuses on the effect of catalyst viscosity on single crystal growth. The results show that the convection in the low-viscosity catalyst is strong and the carbon precipitation rate is too fast. The crystals grown for a long time (more than 25h) are “group crystals”, so it is not suitable for growing high-quality carat-grade diamond single crystals; in high-viscosity catalysts The convection is relatively weak, the carbon deposition rate is moderate, and it can be used to grow high-quality carat-grade diamond single crystals. Scanning electron microscopy analysis shows that the surface of the low-viscosity catalyst synthesis crystal is rough; the surface of the high-viscosity catalyst synthesis crystal is smooth and flat. After cutting and polishing, diamond pieces and many jewelry diamonds were obtained in the study. It can be seen from the processed crystal that the quality of the high-quality carat-grade diamond single crystal grown is intact. Study on Distribution Ratio of CBN-TiN-Al Sintered Binder Group Xie Hui1, Feng Fei1, Fang Haijiang1, Zhang Yingjiu2 2. Henan Sifangda Superhard Materials Co., Ltd., Zhengzhou 4500016, China 2. Zhengzhou University, Physics Engineering College, Zhengzhou, 450052 Abstract: This paper studies the ratio of the ratio of TiN to Al in the binder (TiN: Al ratio), and the effect on the sintering behavior and related properties of polycrystalline cubic boron nitride (PCBN). A preferred ratio of TiN: Al is obtained. Through the analysis of the phase, hardness, density and microstructure of PCBN poly-wafer, it is found that both hardness and measured density decrease with the decrease of TiN: Al ratio, while the relative density is affected by the formation of new phase and material density. When the ratio of TiN: Al is in the range of 1:1~1:2, the microstructure of the sintered body is uniform and uniform, the relative density is large, and the amount of flank wear after cutting is small, for the cBN-TiN-Al sintered body. It is preferable to select the TiN:Al ratio in the vicinity of the range of 1:1~1:2. Superhard Abrasives Titanium Alloy Substrate Yan Lijun, Guo Yongxi Baoji Sanli Nonferrous Metals Co., Ltd. Baoji, Shaanxi 721013 China Abstract: This paper is mainly developed for the superhard materials industry in the development of the new metal materials R&D center of Baoji Sanli Company. A superhard abrasive titanium alloy substrate is taken as an example. This paper expounds the nine characteristics of superhard abrasive titanium alloy matrix materials and traditional matrix materials, and its possibility and reliability in a wide range of applications in aviation, navigation, shipbuilding and medical fields. Research progress on modification of poly-bismaleimide resin LIU Tao YE Xiao-chuan HUANG Li-juan (Wuhan Tigers Technology Development Co., Ltd., Wuhan 430070, China) Abstract: Polyimide has good heat resistance and radiation resistance at high temperatures. It has the advantages of non-combustion, wear resistance, good dimensional stability of the product, and can produce friction-resistant products as well as parts and seals, but it also has its own disadvantages such as brittleness. Therefore, this paper studies the modification of toughness. Explain. Effect of iron powder particle size and WS2 on the performance of high-iron-based diamond tool carcass Li Chunyue, Wang Kai, Yuan Yifei, Wu Jian (Hebei Diamond Tool Engineering Technology Research Center, Hebei, 050035) Abstract: Iron content was prepared by powder metallurgy process at 60 A diamond tool carcass sample with a particle size of between 14 μm and 75 μm and an addition of 0.5% to 5% WS2. The density, hardness, compressive strength, and three-point bending strength of the samples were tested on a density balance, a Rockwell hardness tester, and a tensile tester, respectively. The results show that the press formability, hardness and flexural strength of the carcass change regularly with the change of the particle size of the iron powder; the relative density, hardness and flexural strength of the sample increase first and then decrease with the increase of WS2, reaching at 3%. The maximum values ​​are 98.4%, 78.9 and 852 MPa, respectively. Research and Application of "Cold Forging " Technology for Metal-Based Diamond Saw Blades Hui Bin 1 Yuan Yifei 1 Wang Chengjun 1 Dong Shushan 2 (1 Hebei Diamond Tools Engineering Technology Research Center 2 Henan Yellow River Cyclone Co., Ltd.) Abstract: This article through experimental research, It is confirmed that after the conventional free sintering of the diamond tool, the "cold forging" process is increased at normal temperature, and the relative density of the cutter head can be 98%, the hardness of the cutter head is remarkably improved, and the bending strength is increased by 15%. Scanning electron microscopy showed that the porosity of the carcass decreased significantly, which has a certain effect on improving the holding power of diamond. "Cold forging" has no significant effect on the strength of the diamond itself. The cutting experiment results show that the cutting speed is increased by more than 15%. Study on the Influence of Temperature on the Sharpness of Diamond Tools Yin Yuhang Tao Hongliang Ma Shaowei Zhu Jianye Gong Weijing (Guangdong Benlang New Materials Co., Ltd., Foshan 528313, China) Abstract: The sharpness of diamond tools with different sintering temperatures was studied. Combining the mechanical properties of the carcass with the fracture morphology reveals the reasons for the sharpness of the tool at different temperatures. Studies have shown that at different holding times, as the temperature increases, the sharpness of the saw blade peaks. When incubated at 4 min, the diamond tool prepared at 785 °C had the best sharpness, the tool prepared at 845 °C had the worst sharpness, the temperature continued to increase, and the tool sharpness increased again. When the temperature is kept for 7 minutes, the sharpness of the tool will increase to a different extent with the increase of the sintering temperature for 4 minutes. Summary of Current Status and Development of Silicon Wire Cutting Equipment Zheng Chao National Special Mineral Materials Engineering Technology Research Center Guilin 541004 Abstract: The state gives strong policy support to new energy and its equipment manufacturing industry, and proposes to strengthen technological innovation and enhance the core competitiveness of the industry. Strengthen key industry core technologies and cutting-edge technology research. It is extremely urgent to develop and research multi-line slicers and square machines with independent intellectual property rights, which has become the key to breaking through the monopoly of foreign technology and the bottleneck of domestic industry. This paper introduces the latest developments in foreign silicon wafer cutting equipment research and the status of domestic development. Analysis After several years of hard work, domestic cutting equipment failed to gradually replace imported equipment, pointing out that the development of diamond multi-wire cutting equipment should be focused on. Diamond single wire and loop wire cutting machines have broad application prospects. Analysis of Grinding Characteristics of Hollow Spherical Composite Abrasives (HSCA) Cai Gongxuan 1 Wang Hao 2 Liu Xing 3 Xu Wei 3 Ding Yinghui 4 Li Jian 5 Liu Shuguang 4 College of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou, 450007 Zhengzhou Institute of Abrasives Grinding, Zhengzhou, 450007 Zhengzhou Xingguangda Technology Development Co., Ltd., Zhengzhou, 450007, Zhengzhou Institute of Mechanical Engineering, Zhengzhou, 450007 Henan Fu Nike Superhard Materials Co., Ltd., Zhengzhou, 45007, China Abstract: The grinding properties of hollow spherical composite abrasives (HSCA) were comprehensively analyzed. The fixed abrasive is composed of three parts: grinding, granules, binder and pores. The three are called the three elements of the fixed abrasive. Hollow spherical composite abrasive (HSCA) changes the geometry and composition of ordinary abrasive grains, forming a prefabricated pore with abrasive grain function. In ceramic bonded abrasives, adding 25% HSCA can improve the rotation strength and Grinding efficiency, reducing grinding heat generation and improving the surface quality of the workpiece. Key words: hollow spherical composite abrasive (HSCA); grinding characteristics PCBN processing hardened steel tool material Li Qiquan Zhang Wangwei (School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China) Abstract: This paper introduces cubic boron nitride tool material (PCBN) The preparation process and the preparation of six different formulations of sample processed hardened steel. Through cutting experiments and performance tests, it was found that CBN inserts play a key role in the processing of hardened steel. The same distance is cut, and the flank wear of low-concentration PCBN is small. Scanned electron microscopy showed that CoAl alloy powder can increase the density of PCBN sintering tool materials. When the wear resistance is measured, it is proved that the wear resistance of the PCD performance test for the diamond composite sheet is not applicable to the detection of the PCBN material. Welding repair of hinge beam of six-face press machine Gao Shenjie Yang Jinzhong Zhengzhou Huajing Diamond Co., Ltd. 450001 Abstract: Analysis of the structure and use characteristics of the hinge beam of the six-face press and analysis of the causes of cracks easily occurring when welding 35CrMo alloy steel The welding repair process of the ear beam of the hinge beam of the six-face press is determined, the corresponding welding method and heat treatment process are formulated, and the welding process is carried out. After passing the quality inspection, no cracks, slag inclusions and porosity welding defects were found. On this basis, the damaged hinge beam of our company was repaired by the actual use. After the repair, the quality reached the equipment requirements and the equipment was extended. Life expectancy increases equipment utilization. Research on End Face Machining Technology of Bolt Drill Special Composite Film Wang Yange Fan Shijie Ni Weifeng Shao Jingru Niu Huanyu Zhang Ruifang Wang Penghui (Zhengzhou Synthetic Diamond and Products Engineering Technology Research Center Co., Ltd.) Abstract: Diamond composite sheet consists of cemented carbide layer and polycrystalline layer. When the diamond composite sheet is produced by hot pressing, a metal shell is formed outside the polycrystalline layer, and the mechanical processing of the composite sheet is first performed by end face processing to remove the metal shell. The various conditions in the actual production process will result in subtle differences in thickness dimensions of different parts of the composite sheet, and the hardness of the polycrystalline layer is particularly high, which greatly increases the difficulty of end face processing. In this paper, for the special composite piece of bolt drill, according to the actual situation, through the comparison of two common composite end face machining processes, a practical and efficient end face machining process is obtained, and a corresponding design is designed according to the actual situation. Processing tools. Preparation of PcBN polycrystals with β-Sialon combination Yao Junqing 1, 2 Zhang Wenna 2 Zhao Yucheng 2 Boshen Tools Co., Ltd., Shijiazhuang 050000, China 2. School of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China) Abstract: Nano-silicon nitride, Aluminum oxide, aluminum oxide, silicon oxide, etc. are used as raw materials to prepare Sialon ceramics by spark plasma sintering (SPS) process; Sialon ceramic powder is used as binder to introduce appropriate amount of cubic boron nitride (cBN) fine powder. Sialon-based PcBN was prepared under high temperature and high pressure (HTHP) conditions. On this basis, the effects of sintering temperature and holding time on the synthesis of Sialon-based PcBN under HTHP process were discussed. The phase composition of the sample was analyzed by X-ray diffraction technique. The surface morphology and composition of the sample were analyzed by SEM. The density of the sample was tested by Archimedes method. The HVS-1000 Vickers hardness tester was used. The microhardness of the test sample was measured; the wear ratio of the sample was measured using a DHM-3 type wear ratio tester. The experimental results show that the optimal experimental parameters for the preparation of PcBN by HTHP process are 5.5GPa/1500°C/15 min. The bulk density of the sample is 3.388 g•cm-3, the microhardness is 2125 HV, and the wear ratio is 7178. Effect of Suspending Process on Diamond Synthesis Liu Guangli, Xue Shenghui, Li Weifeng Abstract: In this paper, the time and power of the suspension phase of the process elements are studied for the synthetic process elements of synthetic diamond. The research shows that in a certain synthetic process time Improve the combined power of the suspension phase and shorten the pause time, which can improve the particle size, output and quality of the diamond product. In order to further quantify its accuracy, the experimental verification was carried out on our hinged 650-cylinder diameter press. The experimental results show that the idea is in good agreement with the actual production and is currently used for production. This paper provides a powerful reference for the design of synthetic processes. Consolidation diamond wire saw technology Lu Chao Zheng Zhi 541004 Abstract: at home and abroad of the solar cell and the semiconductor chip processing, consolidation diamond wire saw is its superior performance to gradually replace the steel wire saw free formula. This paper introduces the research status and development of solidified diamond wire saws at home and abroad, analyzes the difficulties and challenges of diamond wire cutting technology, and puts forward some thoughts on the current diamond wire saw manufacturing methods. In this paper, diamond single long wire and loop wire are used for single crystal silicon and polycrystalline silicon, and can also be used for cutting and processing precious and brittle materials such as sapphire, functional ceramics, artificial crystal and gemstone. The prospect is very broad. Progress of Sanding Method for Electroplated Diamond Wire Saws Wang Liangliang 1 Wang Qinsheng 1 Dong Guoxu 2 Liang Pengwei 2 (1 Zhongyuan Institute of Technology, Zhengzhou 450007 ; 2 Zhengzhou Synthetic Diamond and Products Engineering Center Co., Ltd., Zhengzhou 450007) Abstract: Electroplated diamond wire saw sanding method There are various methods such as sand burying method, falling sand method and brush plating method. In the sand burying method, the wire saw base is buried in the diamond fine powder accumulated in the plating liquid to complete the sand. The falling sand method is to submerge the wire saw substrate in the plating solution, and the fine powder suspended in the plating solution falls on the substrate to complete the sand. The sand falling method shows many forms. The brush plating method is to add a brush in the plating tank, and complete the sand by the rotation of the brush. At present, the production of electroplated diamond wire saws mostly uses the sand-buried method, and the production of diamond wire saws is slow. The technique of preparing the electroplated diamond wire saw by the falling sand method and the brush plating method is still immature and needs to be broken. The different ways and forms of sanding on electroplated diamond wire saws and the selection of sanding process parameters are reviewed. This paper has certain reference value for the improvement of the production speed of electroplated diamond wire saw. New Development of Diamond Polycrystalline Processing Technology Kong Jianping Cui Zhongming Che Jiangning (College of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450007) Abstract: There are still many technical problems in the processing of diamond polycrystals in terms of efficiency, precision and surface quality. Much progress has been made with the efforts of the staff. This paper introduces the new development of diamond polycrystalline processing methods, namely EDM grinding, high-speed steel disc grinding, EDM, laser processing, and summarizes the mechanism, characteristics and application range of these processing methods. The development trend of diamond polycrystalline processing was discussed. Study on Grinding Force and Specific Grinding Energy of High Speed ​​Grinding of Nickel Base Superalloy by CBN Grinding Wheel [* Fund Project: National 973 Plan Project (2009CB724403) Funding] Qian Yuan Xu Jiuhua Fu Yucan Tian Lin (School of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China) Abstract: Grinding force and specific grinding energy are two important parameters of the grinding process, and two important factors that need to be referenced in order to develop a reasonable grinding process. In this paper, the ceramic bond CBN grinding wheel, electroplated CBN grinding wheel and single-layer brazing CBN grinding wheel are used to test the high-speed grinding of GH4169 superalloy. The relationship between grinding force, specific grinding energy and maximum undeformed chip thickness of single abrasive grain is studied. Based on this, the corresponding theoretical formula is established, which has reference value for high-speed grinding mechanism research and high-speed grinding process optimization. Experimental Study on Brazing Diamond Nesting of Cu-Based Brazing Material * Guo Zhaocui Chen Yan Wu Jie (School of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, 210016, Nanjing) Abstract: Cu-based brazing filler metal (Cu80Sn20) with different compositions by vacuum brazing 90Ti10 and (Cu90Sn10)82Ti18, (Cu90Sn10)80Ti20 were prepared with titanium-coated diamond nesting drills and granite drilling tests were carried out. The wear of various solder brazed diamond casing drills was observed by three-dimensional video microscope and scanning electron microscopy (SEM). The results show that the three kinds of solders have achieved a strong bond to the diamond; (Cu80Sn20) 90Ti10 alloy has a longer life than the (Cu90Sn10)82Ti18 alloy and (Cu90Sn10)80Ti20 alloy brazed diamond nesting. Study on Wear of Grinding Wheel of High Speed ​​Alloy Grinding by High Speed ​​Grinding of CBN Grinding Wheel Li Feng, Su Honghua, Ding Wenfeng, Zhang Zhiwei (Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China) Abstract: For the characteristics of high speed grinding, the nickel base is ground at a high speed of 120m/s using electroplated CBN grinding wheel. Experimental study on grinding wheel wear of superalloy GH4169. With the increase of the removal volume of the workpiece material, the shape change of the working surface of the grinding wheel during different wear periods was tracked by the complex technique, and the change of the grinding force was analyzed. It is found that with the increase of the removal volume of the workpiece material, the grinding force shows a rapid increase in the initial stage and then a steadily increasing trend, and the normal force difference between the smoothing and the back grinding is in the smooth grinding stage with the degree of wear of the grinding wheel. The increase will gradually increase, and the wear form of the grinding wheel is mainly observed by the three-dimensional stereo microscope. Experimental Study on Grinding CFRP by Brazing Diamond Tool [Project: National Natural Science Foundation of China (No. 51075210)] Wang Wei, Chen Yan, Wang Weifeng (School of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China) Abstract: To improve carbon fiber reinforced resin matrix compound The quality of the edging of the material (CFRP) and the service life of the tool were improved. Based on the idea of ​​“cutting by grinding”, the brazed diamond grinding head was prepared and the edge grinding test of CFRP was carried out. In order to evaluate the processing quality of CFRP edging, the evaluation parameter of CFRP edging quality, the burr factor, was defined. The influence of spindle speed and diamond grain size on the quality of CFRP edging was analyzed. The test results show that the increase of the spindle speed at the same grinding depth and workpiece feed speed helps to improve the quality of CFRP edging. The smaller the diamond particle size, the better the processing quality, and the finer grain grinding head has a lower surface roughness. Graphite transformation model of graphite transformed into diamond by explosion phase [1] Zhang Kai Zhang Luqing (Dalian Kaifeng Superhard Material Co., Ltd., Dalian 116025, China) Abstract: After the high-pressure impact of high-pressure high-pressure, the graphite powder layer will be subjected to high-speed impact. In the solid phase structure to transform into diamond, the author created a transformation model, the name Kai model, including: in the ABCA type graphite transformation theory, found the specific atomic corresponding point structure of the 18 carbon atoms to the diamond unit cell transformation So that the calculation of activation energy can approach the minimum. In the ABA type graphite conversion theory, in addition to the compression between the graphite grid planes, the effect of interlaminar shear dislocation must be considered, and the probability of shear deformation and interlaminar compression is much the same. The distance indicating the misalignment of the characteristic is 0.521h, and the compression distance between the h-layers is theoretically verified by experiments. Increase Diamond Drilling Strength and Improve Drilling Energy Saving and Emission Reduction Ability Fang Xiaohu Wen Jianjie (1 Shanghai Qishi Superhard Materials Co., Ltd., Shanghai 201108 He Nanbing Wang Tengji Xie Delong 2 Hubei Exin Diamond Material Co., Ltd., Hubei Ezhou 436000 Abstract: Diamond drilling technology for high quality diamond The development and demand plays a very important role. At present, the rapid development of the national economy has an increasing demand for energy and mineral resources, especially in recent years, diamond drilling and bit making technology has developed rapidly. At the same time, the demand for high quality diamond is also in urgent need of growth. This paper describes the application status and prospects of diamond in resources from the aspects of bit making, resource and energy. Preparation and growth process of nano-sheet diamond film Yao Ning 1,2, Cui Nana 2, Lu Zhanling 3, Su Bo 2, Ge Yashuang 2, An Zifeng 2, Zhang Binglin 2 (1 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China) (2 Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052) (3 School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052) In this paper, a nano-diamond film was prepared on a titanium-plated single crystal silicon substrate by microwave plasma chemical vapor deposition (MPCVD). The reaction gases were CH4 and H2, and the flow ratio was CH4:H2=30:30 sccm, and the microwave power was 1800. W, the reaction gas pressure is 10 KPa. The morphology and carbon structure of the film were analyzed by scanning electron microscopy (SEM) and Raman spectroscopy. The results show that the nano-diamond film exhibits a sheet-like microstructure characterized by a growth process in the initial stage of single crystal silicon lining. A spherical carbon cluster composed of nano carbon particles is formed on the bottom; as time increases, the carbon clusters gradually increase, and the nano carbon particles are aligned or self-assembled to form a sheet-like nanodiamond film. Powder catalyst particle size and diamond particle size ** peak corresponding relationship between 1,2 He Xiaoguang Ding Zhanhui 3 1 1 Danhao Chen Jiang Qing 2 * (1. School of Physics, Changchun Normal University, Changchun 130032, China) (2 School of materials Science and Engineering, Jilin University, Changchun 130023) (3. College of Physics, Jilin University, Changchun 130023, China) Abstract: This paper selects the mixed particle size Fe70Ni30 catalyst powder commonly used in the industry, and obtains 140-170 after screening. Six different particle size catalyst samples of 170-200 mesh, 200-230 mesh, 230-270 mesh, 270-325 mesh and 325-400 mesh were synthesized on the domestic JHY-III six-sided top press. The high-quality diamond single crystal with a particle size has a synthesis pressure of about 5.3 Gpa and a temperature of about 1350 ° C. The article firstly uses the Nanoscope IIIa scanning electron probe and the OXFORD MS-500 projection Mössbauer spectrometer to select the particle size and microscopic of the catalyst. The morphology and the degree of oxidation were analyzed. The results show that the catalyst powder has no oxidation during the experiment. Secondly, the comparison of the peaks of diamond single crystals synthesized by different particle size catalysts summarizes the catalyst in the paper. The general rule between particle size within the particle size range and the size of the synthesized diamond crystal. The results show that the particle size of the iron-based catalyst is closely related to the particle size of the synthesized diamond single crystal: the 230-270 mesh catalyst is most suitable for growing coarse-grained diamond single crystals, and the farther away from this particle size (the thicker or finer) the catalyst is synthesized. The finer the particle size of the diamond single crystal. Finally, this paper also validated this rule using nickel manganese cobalt catalyst. Here, we only hope that our research results can provide a certain reference value for China's diamond industry. Microhardness Study of Pulse Electroplated Nickel-Cobalt Coatings HUANG Zhiwei1,2, LIU Yubin1, LI Yundong2, HUANG Hei Shuili Vocational and Technical College, Kaifeng 475004, China; College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou, Henan 450002, China) Abstract: Pulse plating is a new type of electroplating technology developed in recent years. The material produced by this technology has good mechanical properties and can be widely used as electroplated diamond. The carcass material of the tool is used in the aviation and military fields. In this paper, the hardness of the pulsed nickel-cobalt coating was investigated to understand the effects of additives, cobalt sulfate and current parameters on the coating. Finally, the influence of various electroplating process parameters on the hardness of the coating was found, which provided a reference for the preparation of nano-nickel-cobalt materials. Study on the relationship between nanocrystalline structure and friction properties of brush-plated nano-diamond/nickel composite coatings LI Ying LI Zeng-xiao ZOU Wen-jun DONG Qi-ming College of Materials Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450071 , China Abstract: Nanodiamond/nickel prepared by brush plating And nickel plating, using SEM and XRD techniques to analyze the surface morphology, nanocrystalline coating structure, nanoparticle composite coating, microstructure and grain size of the coating. The results show that the composite coating is nanocrystalline and the hardness is significantly higher than that of ordinary nickel coating. The reasons for the formation of nanocrystalline coatings include high overpotentials of brush plating, reciprocating motion of plated pens, heterogeneous nucleation of nanodiamonds, and tip discharge effects. The introduction of nano-diamond makes the grain of the coating super-fine, and the core-shell structure of nano-diamond plays a role in wear-resisting and anti-wear during the friction process. Therefore, the wear resistance of the composite coating is significantly higher than that of the fast nickel coating. Effect of ceramic hollow sphere on the performance of metal bond diamond grinding wheel LIU Mingyao, XIONG Huajun, XIA Lixue (Zhengzhou Abrasives Grinding Research Institute, Zhengzhou 450001, China) Abstract: Preparation of metal bond samples by adding ceramic hollow spheres and using ordinary hot pressing sintering method And the diamond grinding wheel, the influence of the shape, particle size and addition amount of the ceramic hollow sphere on the properties of the metal bond and the grinding wheel was discussed. The results show that the flexural strength and hardness of the metal bond carcass sample decrease after adding the ceramic hollow sphere, but it is little affected by the particle size of the ceramic hollow sphere; the diamond-containing carcass sample and metal bond Compared with the carcass sample, the flexural strength is reduced by 0.84-7.01 MPa, which is about 1%-8%. The fracture morphology of the carcass sample shows that the ceramic hollow spheres have regular shape and are round, which can be evenly distributed in the metal bond carcass, which can provide a certain pore space for the metal bond carcass; The ceramic hollow ball can improve the grinding efficiency of the grinding wheel. The grinding of YG8 cemented carbide workpiece can be increased by 8%-43%. The grinding wheel with 3.75% ceramic hollow ball has the highest grinding efficiency, which is 43% higher than that of the dense grinding wheel. . Key words: ceramic hollow sphere; metal bond; development of new porous metal bond carcass for grinding wheel [* National Natural Science Foundation of China, No. 51175192] * Li Yangshuai, Dai Qiulian 1, Tang Yinshu (Huaqiao University, brittle material processing technology education Department of Engineering Research, Xiamen 361021, China) Email: Abstract: This paper uses orthogonal design and analysis of variance to optimize the formulation of new Al bronze binder and sintering temperature, and compare new and old pore formers in new Al bronze. The pore-forming effect of the binder and the traditional tin bronze binder and the effect on the mechanical properties of the carcass. The test results show that the flexural strength, hardness and wear resistance of the aluminum bronze carcass increase with the increase of sintering temperature, Al content and Fe content. When the Al content in the aluminum bronze carcass is 8%, the Fe content is 3%, and TiH2 is 2%, a suitable sintering temperature is 800 °C. The flexural strength of the porous aluminum bronze carcass prepared by the new pore former with a porosity of 35% under these conditions was 228% higher than that of the porous tin bronze carcass prepared with the old pore former. Slip form analysis of hard and tight rock formation and selection of diamond drill bit Liu Bixiang 1 Cao Sheqiang 2 1. Tianyi Company of Nuclear Industry No. 2 and O 2 Plant 2. Nanchang 330026 , Jiangxi Nuclear Industry Machinery Research Institute Abstract: Drilling into hard and dense weak abrasive rock layers often occurs The so-called "slip" phenomenon of the drill bit, this paper analyzes the cause of the "slip" of the drill bit and the form of the slip. It is pointed out that the hard and compact rock is the objective cause of the slip, which cannot be changed, and the slippage of the drill bit is subjectively caused. Human factors can change. This paper summarizes and analyzes the important effects of diamond drill bit performance and structure, diamond parameters and drilling process parameters on drilling hard and dense rock. It is proposed that as long as the bit performance - rock properties - drilling process parameters can optimize the coordination, A good drilling effect can be achieved in a hard and compact rock formation. Simulation Analysis of Hydraulic Performance of Two Core-Shaped Diamond Bits with Different Lip Surface Structures Liu Zhiyi Duan Longchen Zhang Qing College of Engineering, China University of Geosciences, Wuhan 430074, China Abstract: The computational fluid dynamics software CFDesign was used to hydraulically drill two different types of drill bits. The performance simulation study shows that the design of the water path structure of the drill bit is unreasonable and easily causes the following phenomena: (1) the local position of the drill bit is strongly affected by fluid scouring; (2) the reverse flow and eddy current of the drilling fluid at the bottom of the well; (3) the bottom of the well Negative pressure in the flow field may cause cavitation; (4) Flow field velocity vector divergence, which aggravates the flow phenomenon. The arc type drill bit is more reasonable than the flat bottom type bit structure design. Observation of khaki pyrophyllite Jia Panlu Canhua Zhongnan Diamond Co., Ltd. (Nanyang 473264) Hao Zhaoyin State Key Laboratory of Superhard Materials, Jilin University (Changchun 130061) Abstract: X-ray and electron microscopy were used to measure the structure of domestic yellow-yellow pyrophyllite. And the morphology, the relationship between the structural characteristics and sealing properties of this kind of pyrophyllite was discussed. Application of brazing technology in diamond tools Long Weimin Zhu Kun Zhang Guanxing Zhang Yi Wang Xing State Key Laboratory of Brazing Materials and Technology, Zhengzhou Institute of Machinery 450001 Abstract: The development of brazing technology has a long history and rapid development trend. Brazing technology is very important in the manufacture of diamond tools, and the development of brazing materials and the research of induction brazing equipment and processes are quite active. There are many kinds of brazing materials used for brazing diamond tools. Silver, copper, zinc and cadmium are the most common, and the technical performance of silver, copper, zinc and nickel is the most superior. This paper summarizes the main causes of diamond tool failure and studies the technical methods to improve the reliability of the brazing joint. The performance characteristics and application objects of various components of brazing filler metal are mainly described. The four types of factors of cutter head shedding are briefly described from both theoretical and practical perspectives. The research results show that brazing technology is still the leading connection technology for diamond tool manufacturing in a long period of time. The application of cadmium-free solder is imperative. It is an irresistible trend to reduce the silver content of solder. Preparation and Application of Silicon-based CVD Diamond Films He Jinghui, Chen Lei, Qin Songyan, Xuan Zhenwu (Beijing Tiandi Oriental Superhard Materials Co., Ltd. 100018) Abstract: This paper studies the preparation methods and application fields of deposited diamond films on silicon substrates. According to the research, it is found that the diamond film deposited on the silicon substrate has almost no network cracks, and higher strength can be obtained after improving the process conditions. In addition, this paper also introduces the current state of technology development of silicon-based diamond films, the problems faced and the application prospects. Key words: silicon, diamond film, CVD ring-plated diamond wire saw research application analysis Liu Ying1 Wang Jinbao2 Chen Chao2 Zhou Shiwei2 Lu Zhi1,2 Zheng Chao2 (1.College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China ) (2 Guilin Research Institute of Geology, Mining 541004) Abstract: endless diamond wire saw diamond abrasive grains is fixed to the kind of the annular cutting tool steel wire substrate.本文阐述了钢丝基体材料的选择，焊接方法，环形电镀金刚石线锯的制作工艺。文章使用自制的环形电镀金刚石线锯进行多晶硅的切割试验，切割工艺参数：锯丝线速度20~40m/s，工件进给速度2~10mm/min，锯丝张紧力60~100N。试验表明：硅片表面平整光滑，粗糙度Ra在0.328~0.562μm之间，体现出环形金刚石线锯切割的良好特性。关键词：环形；金刚石线锯；硬脆材料；焊接稀土对陶瓷结合剂砂轮磨削性能的影响 赵干生1 梁芸亭2 栗正新2 (1.白鸽集团，河南，郑州 450007 ） （2.河南工业大学材料科学与工程学院, 河南，郑州450007)摘 要：本实验采用正交实验研究稀土氧化物对陶瓷结合剂砂轮磨削比和喷沙硬度的影响规律。实验证明与未添加稀土砂轮相比，稀土氧化物能提高砂轮的磨削比和喷砂硬度，磨削比提高近一倍以上。并得出三种稀土氧化物对两者的影响顺序: La2O3>Y2O3>CeO2，三者的最佳添加量为3%La2O3 3%Y2O3 和1%CeO2。关键词：La2O3 ； CeO2 ； Y2O3 ；陶瓷磨具；磨削比；喷砂硬度中国磨削型金刚石的研究、现状与前景 方啸虎何南兵王腾吉赵亚良缪树良谢德龙 （湖北鄂信钻石材料有限公司436000）摘 要：金刚石作为磨削使用，在全球金刚石工具中约为50%以上，目前国内产量还有相当的差距。我公司通过几年的努力，强力开发了此类产品的合成棒，取得明显效果，并通过自己的试验成果赢得了用户，为我国填补了一项专用金刚石磨削类RVD料合成棒的新技术、新工艺。关键词：磨削型金刚石，RVD金刚石，趋势，转化率，工艺原理，技术新进展，前景高性能陶瓷结合剂金刚石砂轮的研制 刘一波[] 刘伟 黄霞 北京安泰钢研超硬材料制品有限责任公司 北京 102200摘 要：本文通过对两种不同陶瓷结合剂L和G（L为低温结合剂，G为高强结合剂）进行球磨混合，制成金刚石砂轮做了详细的对比，通过DSC，抗折强度，来确定砂轮的烧制工艺，最后将砂轮应用于PDC的磨削中做对比实验。实验结果表明：对于自制的陶瓷结合剂，其添加量在20-24%时，其砂轮抗折强度达到最大。同时，两种结合剂混合后对于砂轮的性能有较大的改善，当前者含量为20%时，砂轮的整体效果最佳，此时金刚石砂轮的抗折强度为89MPa；砂轮的寿命比市售同类陶瓷金刚石砂轮寿命提高30-50%，效率提高20%以上。关键词：陶瓷结合剂金刚石砂轮PDC加工球磨混合硅表面金刚石膜红外增透性能研究 胡东平丰杰李建国梅军 中国工程物理研究院总体工程研究所 四川省绵阳市919信箱405分箱摘 要：本文通过在大面积区熔硅表面沉积金刚石膜，制作硅的红外增透膜。经扫描电镜观察，金刚石膜的颗粒尺寸平均约2μm，晶体颗粒形状规则。测试单面镀膜的红外透过率最高达65%，双面镀膜红外透过率最高达84%。初步考核证明硅表面金刚石具有一定的抗热冲击性能。分析了硅表面金刚石薄膜的红外增透特性，提出了进一步提高金刚石膜红外增透性能的方法。关键词：金刚石薄膜增透膜红外透过热丝化学气相沉积法制备优质微米/亚微米级单晶金刚石的研究 张韬1 沈彬1 孙方宏1张志明2 （1上海交通大学机械与动力工程学院，上海，200240） （2上海交友钻石涂层有限公司，上海，200240）摘 要：本文利用热丝化学气相沉积法（HFCVD），在硅片衬底上进行微米级（＞1µm）及亚微米级（＜1µm）单晶金刚石的沉积研究。微米级颗粒金刚石，是以高温高压法（HPHT）制备的1µm金刚石颗粒为籽晶，通过甩胶布晶的方法，在衬底上均匀分布晶种，并通过合理控制沉积工艺参数，在衬底上形成晶形完好的单晶金刚石，在沉积2h后，可消除原HPHT籽晶缺陷，沉积6h后，生长出晶形良好的立方八面体金刚石颗粒（约4µm）；对于亚微米级单晶金刚石，可直接在衬底上进行合成，通过调控沉积参数（如衬底预处理方法，偏压大小，沉积时间）对单晶金刚石的分布密度和颗粒度进行控制，经过2h的沉积，最终获得0.7µm的二十面体单晶金刚石。关键字：热丝化学气相沉积法，微米级单晶金刚石，沉积参数

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