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Research Status Of Ceramic Bond Diamond Grinding Wheel
Nov 16, 2017

The ceramic bond diamond wheel has higher modulus of elasticity and lower fracture toughness, and its bonding strength is higher than the resin bond diamond wheel. It self-sharpening is better than the metal bond diamond wheel. In recent years, vitrified bonded diamond grinding wheel is widely used in the processing of composite films, cemented carbide, glass, ceramics and other materials.

Russia and other Eastern European countries developed a hot pressing technology of ceramic bonding agent diamond grinding wheel to reduce the oxidation in the high temperature sintering process. The advantage of this technology is that the sintering temperature is low, the holding time is short, the thermal damage of the diamond is small, and the overall performance of the grinding wheel is greatly improved after sintering. Hashimoto from Japan put forward to use MgO, K20, B203, Si02, Na20, Al203 and other raw materials for the preparation of ceramic bonding agent. In an inert atmosphere, it can be made low-temperature ceramic bond diamond wheels temperature in 680 ° C, holding 4-5 hours. The wheels can be used for grinding engineering ceramics and ferrite, and it has excellent grinding performance.

Tokyo University used sol-gel technology to develop diamond and cubic boron nitride ceramic grinding wheels. It can be processed into Nano-precision products. Tyrolit, a Austria company and Norton company used Li20-Al203-Si02 series of glass-ceramic as a binder, sintering in the temperature 800-900 ° C, and handle a special heat treatment process after sintering. The abrasive glass-ceramic has strong holding power on the diamond abrasive. The grinding wheels are successfully used in polycrystalline diamond cutter grinding. KrebsKiedel Company used DeBeers's ABN800 as the abrasive, made a new type of ceramic grinding wheel with big pores. The new ceramic grinding wheel can be controlled by the natural formation of pores and synthetic pore structure to reduce the amount of binder and achieve abrasive configuration rules.

Russia has developed a new type of closed-cell multi-porosity ceramic grinding wheel. This new type of ceramic grinding wheel uses non-flammable foaming agent as a pore-forming agent and SiC and Al203 as abrasive grains. It opens up new way to protect the environment in making grinding wheels process. The wheels can be used for Heat-resistant steel processing, silver alloy, the fire of steel, magnetic materials. WINTHERTHUR made a lot of vitrified bond grinding wheel with large pores slowly feed, ceramic bonded CBN grinding wheel and ceramic sintered abrasive wheel with micro-sintering produced. These wheels are mainly used for the precision grinding, for example the vitrified bond grinding wheel with large pores slowly feed can be used for grinding turbine blade.