Abrasive hardness depends mainly on the amount of binding agent is added to the number and density of abrasive, thin slices price, grains fall off easily, said low abrasive hardness; on the contrary, sliced, showing high hardness. Hardness level is generally divided into super soft, soft, soft, medium, medium-hard, hard and superhard seven level, from these levels can be subdivided in a number of small magnitude. The method of measuring the hardness of abrasive, more commonly used hand cone, mechanical cone method, Rockwell hardness measurement method and blasting hardness assay. Hardness of the dynamic elastic modulus of the abrasive has a corresponding relationship, which is conducive to the determination by the abrasive audio method to represent the dynamic elastic modulus abrasive hardness. In the grinding process, high if they are grinding the workpiece material hardness, generally used in low hardness abrasive; on the contrary, sliced, the selection of high hardness abrasive. Using light-cured resin method of manufacturing thin diamond cutting discs aspect, Peng Wei, the use of light-cured resin as a binder for the successful development of ultra-thin thickness of 0.15mm diamond cutting wheel and completed the silicon wafer cutting test. Cutting wheel shape after use is: 53mm × 40mm × 0.15mm. For the experimental sample was subjected to a cutting test. Experimental data analysis, final results showed that adding the right amount of SiO2 can improve the overall performance of cutting blades, and when the particle content of the added 48%, the best cutting effect cutting blades, cutting fracture smooth. Angle grinding abrasive abrasive used by different, it can be divided into ordinary abrasive abrasive and super abrasive abrasive. The former general with corundum and silicon carbide abrasives, which are made of diamond and cubic boron nitride and other superhard abrasive. Abrasive cutting in abrasive in play. Binding agent is consolidated into the loose abrasive abrasive materials, inorganic and organic categories. Inorganic binder has a ceramic, magnesite and sodium silicate; organic resin, rubber and shellac. One of the most commonly used is a ceramic, resin and rubber binder. Cutting, abrasive Tianyi (certified), sliced ??Limited by Weifang Tianyi abrasive. Weifang Tianyi Abrasives Co., Ltd. (www.wftymj.com) (www.wftymj.com) Shandong Weifang, Abrasives leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. In Tianyi abrasive leadership with the staff warmly welcome all inquiries negotiations to create a better future Tianyi abrasive.