Smco2:17 magnet is also named Sm2Co17. Prorated with metallic samarium, cobalt, copper, iron and zirconium, are firstly those roughcasts with different properties and grades after series technology processing from melting, milling, pressing to sintering in order. The (BH)max ranges from 20 to 32 MGOe, and maximum working temperature is 350 ℃. Sm2Co17 bears a extremely low temperature coefficient and preferably anti-causticity. In high temperature condition, the magnetic properties is better than NdFeB magnets. As a result, it's widely used in fields of aeronautics and space, national defense and sensors. As a result of great brittleness of Sm2Co17 materials, it is not suitable for complex shapes and thin thickness disc or ring wall. Due to this character, there may be some appearance defects such as small chips during production, inspection and magetizing process. However, it would not change its property. We consider them as qualified product. Magnetized Smco products must be picked up carefully and gently during assemble process and kept away from ironware to avoid mutually arracting, causing chips and cracks. Sm2Co17magnet is not easy to magnetize saturated, therefore, clients must be familiar with magnetization energy of their own magnetization equipments, to the effect that appropriate grade would be chose and products of company can be fully saturated. Sm2Co17 Magnet,Super Rare Earth Smco Magnet Sm2Co17,Permanent Disc Sm2Co17 Motor Magnet Jinyu Magnet (Ningbo) Co., Ltd. , https://www.magnetbonwin.com
Development of China's superhard material products technology 
Problems and Countermeasures in the Development of Diamond Wire Saws
The diamond wire saw is a "flexible" cutting tool that represents a higher level of sawing tools and has achieved rapid development in recent years. Diamond wire saw is a small branch of super-hard material tools. To continue to maintain rapid development, it is necessary to continuously expand the application field and target the world as a target market, and solve the problem of diamond wire saws and main raw materials such as beading and wire rope consolidation. The performance characterization, through the realization of production automation, improve production efficiency and quality stability; solve the problems of wire rope quality and bead structure design in wire saws. 
Xiamen Zhili Diamond Technology Co., Ltd.: Lu Yongan
Research on ultra-fine diamond wire saw
The report designed and produced a new structure of ultra-fine diamond wire saw with an outer diameter of only 2.0 mm. The sawing parameters were determined by sawing marble test and analyzed. The results show that the sawing speed is equivalent to the diamond wire saw with the outer diameter of 8.8mm, and the cutting power consumption is small, the waste residue discharge is less, and the stone cutting yield rate is increased by more than 30%. 
Synthesis of high quality large size IIa diamond single crystal
Type IIa diamond is a diamond with minimal nitrogen content. It has the highest thermal conductivity, the highest optical transmittance and the widest optical transmission band. It can maximize the thermal, optical and mechanical properties of diamond. The defense and industrial fields with extremely high material performance requirements have broad application prospects. This report studies the synthesis technology of high quality large size IIa diamond under high temperature and high pressure conditions. The stability, the quality, integrity, symmetry and growth rate of the diamond crystal are improved by optimizing the alloy catalyst composition, adjusting the temperature field distribution of the synthesis chamber, and the like. 
No binding agent nanocrystalline PCD studies
This report investigates the feasibility of C-nano onion without binder high pressure sintering PCD. It was found that the C-nano onion containing the core of diamond structure can be sintered into a bulk at a pressure of 5.5 GPa, a temperature of 1200 ° C and a holding time of 15 min. The average hardness is about 32 GPa, and the obtained nanocrystalline diamond contains A certain amount of twins; the same C-nano onion is added to 10wt%~50wt% micron diamond, under the same process conditions, can be sintered into PCD, the highest hardness reaches 71 GPa. The main reason is that the addition of micron diamond changes the pressure transfer state of the powder in the high pressure process to some extent. Another important reason is that the added micron diamond surface plays an active role in the conversion of C-nano onion into diamond. 
Six Dee Telecom Solutions Shanghai Representative: Zhang Liang
Hardened steel turning - new grades with enhanced resistance to crater wear and blade toughness for continuous turning and intermittent turning
Hardened steel (45~68HRC) has a wide range of applications and can be used in power transmission mechanical components, bearings and gears. Polycrystalline cubic boron nitride (PCBN) has been rapidly developed in the field of hardened steel processing for several years due to its extremely high hardness, good heat resistance and high thermal conductivity. This report introduces a new line of PCBN grades focused on the turning of hardened steel parts. The research focuses on extending tool life and increasing productivity, thus reducing the cost of parts in hardened steel turning applications. Whether in continuous or intermittent turning applications, new PCBN grades exhibit improved resistance to crater wear and blade toughness. 
Institute of Atomic and Molecular Physics, Sichuan University: Wang Haikuo
High-pressure sintering and characterization of nanostructured polycrystalline diamond with diamond-Ti3SiC2 as starting material
The report ball-milled Ti3SiC2 and sub-micron diamond mixed powders, reducing the average particle size of Ti3SiC from 5 μm to about 20 nm, and uniformly distributing nano-sized Ti3SiC2 particles on the surface of submicron-sized diamond particles. The high pressure sintering behavior of the initial material was studied under pressure (strong) 5.5 GPa and temperature 600~1650 °C. X-ray diffraction and transmission electron microscopy analysis showed that Ti3SiC2 can be decomposed into nano-sized TiC and glass-phase Ti-Si at 600-700 °C. The diamond reacts with Ti-Si to form a Ti-Si-C solid solution. By simultaneously controlling the temperature-pressure conditions, we obtained a nanostructured diamond-TiC/Ti-Si-C composite superhard material. Under the condition of loading 10kg (98N), the highest hardness HV and fracture toughness KIC of the sample measured by the dimensional indentation method reached 45.SGPa and 14Mpa•m1/2, respectively. 
Taiwan National Normal University: Chen Shuntong
Development of ultra-thin boron-containing polycrystalline diamond wheel cutter and cell mirror inspection
The study aimed to develop "cytoscopic microchips". Firstly, the biaxial ultra-fine CNC machine tool was designed and developed, and the line discharge grinding technology was built on the machine tool to process the concentric and thin-blade boron-containing polycrystalline diamond wheel cutter. Then use this wheel cutter to perform array micro groove processing on NAK80 die steel with "online high speed and shallow shallow grinding technology". Experiments have confirmed that a boron-containing polycrystalline diamond wheel cutter with a blade width of 5 μm can be produced by wire-cut discharge molding, and an array micro-groove having a width of 8 μm can be successfully developed for NAK80 die steel. Since the wheel cutter is formed in-line, the machining can be performed with the original precision of the spindle, and the grinding performance of extremely high stability is obtained, which greatly eliminates complicated correction time. In this study, a vertical polishing shaft was also constructed on the machine tool developed so that the surface of the mold can be polished on the surface and the micro-grooves of the array can be removed; the surface roughness can reach 0.045 μm. In addition, due to the nano-depth grinding, the depth of removal is very small, so the diamond wheel cutter can be processed at room temperature, effectively reducing the affinity of carbon atoms and iron atoms in the diamond. The material removal mechanism still allows the wheel cutter to The diamond structure performs differential shearing on the iron atoms of the die steel. 
Institute of Atomic and Molecular Physics, Sichuan University: Wang Pei
Synthesis and Characterization of Diamond and Cubic Boron Nitride Superhard Alloy
Using the self-developed two-stage large-cavity static high-pressure device, the micro-crystalline diamond and CBN were used as the initial materials for the first time, and a large-body (about 3mm diameter) BCN super-hard block translucent sample was synthesized and tested under the loading force of 5kg. The Vickers hardness (about 74 GPa) of the obtained sample has been within the hardness range of the diamond single crystal (70 to 100 GPa). The synthesized samples were characterized by Raman scattering, scanning electron microscopy, and Vickers hardness testing. The above work lays the foundation for promoting the industrial application of BCN superhard alloy materials. 
Zhengzhou Zhongnan Jiete Superhard Material Co., Ltd.: Star
Effect of High Temperature Calcination on Properties of Different CBN Crystals
The report uses a muffle furnace, which uses different types of cubic boron nitride (CBN) crystals synthesized at high temperature and high pressure, and performs high-temperature calcination at a temperature of 1000 °C for 2 h. The morphological changes and impact toughness of CBN crystals before and after calcination were studied by scanning electron microscopy and impact toughness test. The results showed that the performance of CBN crystals before and after calcination was significantly different. Scanning electron microscopy showed that different varieties The surface of the CBN has different degrees of burns. The impact toughness test showed that the impact toughness TI value of CBN decreased by 9%-60%, and the thermal shock toughness TTI value decreased by 3%-39%. 
Progress in ultrahigh pressure synthesis of nanocrystalline diamond
Henan Huanghe Cyclone Co., Ltd.: Wang Feishan
Key Technology of Synthesizing Large Diameter PCD Composite Sheet with Six-face Pressing Machine
According to the characteristics of high-temperature and high-pressure synthesis of six-face press, this report discusses four key technologies for synthesizing large-diameter PCD composite sheets with six-face press, namely: raw material selection, formulation and mixing and purification treatment, assembly structure design, High temperature and high pressure sintering process, and analyzed the impact of various key technologies on the synthesis of large diameter PCD composite sheets. Through the optimization and improvement of these four key technologies, the yield and product quality of synthetic large-diameter PCD composite sheets can be improved. 
Henan Huanghe Cyclone Co., Ltd.: Guo Song
Study on Magnetron Sputtering and Titanium Nitride Plating
The effects of various factors on the color and bonding force of the coating were investigated by experiments. It was found that the influence of current magnitude, temperature, bias voltage, vacuum degree and nitrogen flow rate on the coating was obvious. Experiments have shown that when different materials are used as the matrix, the required conditional factors need to be appropriately changed. The metal matrix is ​​firmly bonded, and non-metal bonding is difficult. At normal temperature, when the bias voltage is 250V, the vacuum degree is 0.35Pa, and the total power is 1400W, the nitrogen flow rate is 5sccm, which is the optimum plating condition. 
High strength
Test and Analysis of Impurity Element Content in Diamond Particles
Shaoguan Saipu Superhard Material Technology Co., Ltd.: Zhang Zhan
Application of Standard Powder of Pressure Transfer Medium in Synthesis of Large Single Crystal
The report outlines the basic method of homogenization of high-temperature and high-pressure diamond single crystals, and introduces the influence of synthetic process design on the final product. The application characteristics of the standard powder of pressure-transfer medium in the homoepitaxial growth of large single crystal are the focus of this paper. 
School of Materials Science and Engineering, Tianjin University: Zhang Bo
Research Status of Materials Calculation in the Field of Superhard Materials
The report summarizes the theoretical basis and calculation method of first-principles calculation based on density functional theory, and focuses on the research status of material calculation in the field of super-hard materials. It classifies several typical and important super-hard materials. A system comprising a plurality of carbon allotropes, boron based compounds, nitrogen based compounds, and the like. A large number of calculation results show that the hardness index of many new materials has exceeded that of cubic boron nitride, which is very close to diamond, and has great potential to become a new type of superhard material. By introducing in detail the latest developments in the calculation of superhard materials in domestic and foreign materials, it is hoped that it will provide theoretical basis for further calculations in the future, especially for specific synthetic preparation experiments. 
Zhengzhou Abrasives Grinding Research Institute Co., Ltd.: Zhou Bo
Discussion on the problem of particle size standard of superabrasive micropowder
The report uses four systems—a binder without a binder, a metal binder, a ceramic binder, and a metal + ceramic binder. Based on WC+Co, the PCBN is synthesized using high temperature and high pressure conditions. Through the observation of scanning electron microscopy and the comparison of wear ratio, microhardness and flexural strength, it is concluded that the comprehensive performance of PCBN synthesized by metal + ceramic binder is better. X-ray diffraction phase analysis shows that the added metal binder Al will chemically react with CBN under high temperature and high pressure to form stable AlB2.
The report summarizes the experience and lessons of the development of ultra-high pressure technology in the past 50 years. Starting from the basic properties of mineral materials, the flow of solid blocks of pyrophyllite in different sizes of ultra-high pressure chambers is carried out on various high-pressure equipment. The test was carried out to discuss the effect of the rheological behavior of pyrophyllite on pressure transmission and sealing.
The report reviews the achievements of China in the study of the functional properties of cubic boron nitride single crystals by the author's personal experience, and shows the outstanding achievements of the development of superhard materials in China from one aspect. Encourage young people to broaden their horizons and contribute to the overall development of superhard materials.
Research progress of new superhard material AlMgB14
Liu Mingyao
Preparation of nano-ceramic binder ultrafine-grained diamond wheel by polymer network gel method
Application of superhard tools in wind turbine blade processing
Abstract [China Superhard Materials News] On November 15th, 2013, the 6th Zhengzhou International Superhard Materials and Products Seminar was held in Dahe Hall, 5th Floor, Zhengzhou International Convention and Exhibition Center Conference Center. This seminar was organized by China Machine Tool Industry. Association Superhard Materials Branch United Nations Superhardware...
[China Superhard Materials News] On November 15th, 2013, the 6th Zhengzhou International Superhard Materials and Products Seminar was held in Dahe Hall, 5th Floor, Zhengzhou International Convention and Exhibition Center Conference Center. This seminar was organized by China Machine Tool Industry Association. The Superhard Materials Branch is co-sponsored by a number of industry organizations such as the United Nations Superhard Materials and Products Engineering Technology Research Center. Guilin Institute of Mineral Geology: Lu Zhi
In the past 50 years, China's superhard materials have grown from scratch to small. China's super-hard materials products follow the development trend of the industry and seize the development opportunities. After years of research and practice, we have developed a wide variety of tools for grinding, drilling, sawing and cutting of super-hard materials, which are widely used in machinery manufacturing. Geological drilling, building materials processing, construction engineering, semiconductor materials, aerospace, special ceramic materials, large metal parts cutting and other industrial fields, showing great ability to replace traditional tools, from weak to strong in several application fields Global market position. This paper intends to analyze the development of China's superhard material products technology, pointing out the opportunities and challenges of China's superhard material products technology development under the current development environment, and looking forward to the future development prospects of the industry. Professor-level senior engineer, general manager of Guilin Tebang New Materials Co., Ltd.: Xie Zhigang
COE (National Nuclear Research Field) Special Researcher and Chief Engineer: Wang Yuchang
Researcher of Northeast Heavy Machinery Institute, Vice President of Hebei Superhard Materials Association, Director of Yanshan University National Material Comprehensive Experimental Teaching Demonstration Center: Wang Mingzhi
Institute of Atomic and Molecular Physics, Sichuan University: Xu Chao
Nanocrystalline diamond is regarded as a new generation of high-performance superhard material. It not only has excellent physical and chemical properties such as high hardness and high thermal stability of diamond single crystal, but also has higher toughness, isotropy and wear resistance. As well as processability, the application prospect is broad. This report introduces the use of the two-stage large-cavity static high-pressure device developed by the author's own laboratory to realize the direct conversion from stone and ink to diamond under ultra-high pressure and high temperature. The nano-polycrystalline diamond block was synthesized for the first time in China. material. The synthesis pressure of the sample was about 17 GPa and the temperature was about 2300 °C. The synthesized samples were characterized by micro-area X-ray diffraction, scanning electron microscopy analysis and Vickers hardness test, which made a pioneering attempt for the industrialization of nano-polycrystalline diamond in China. Zhang Jianqiong, Shen Xiang, Luo Xiyu, Liu Chengyuan, Tian Junhui
Study on Synthesis of PCBN by Different System Binders
Zheng Risheng, Fang Xiaohu
Study on the relationship between the flow parameters of pyrophyllite and the size of ultra-high pressure cavity
Zhang Tiechen
Study on Propelling Function Characteristics of Synthetic High Quality CBN Single Crystal
Li Pengcheng, Zhang Fenglin, Zhou Yumei, Wu Shanghua
The research progress of the new superhard material AlMgB14 was reviewed. The research progress and summary of the crystal structure, mechanical properties, preparation methods and toughening strengthening of AlMgB14 materials were discussed. Wei Jun, Chen Feng, Li Yonggang, Lei Laigui
According to the development and changes of wind turbine blades in recent years, the report briefly describes the types, processing methods and processes of superhard tools required for processing, and expounds the main functions, defects and improvement methods of superhard tools in blade processing. As the country continues to pay attention to green and clean energy, it is expected that the application of superhard tools in the wind power industry will be more extensive.