On May 30, with the advent of the fifth “National Scientific and Technological Workers' Day”, the SASAC(State-owned Assets Supervision and Administration Commission) of the State Council issued The Recommended Catalogue of Scientific and Technological Innovation Achievements of State-owned Enterprises (2020) to the public. Sinoma “hot isostatic pressing silicon nitride ceramic balls” were listed in the key material fields of the catalogue, which is the specific practice of Sinoma high-tech nitride workers actively practicing the innovation-driven development strategy, striving to achieve self-reliance in science and technology, and maintaining the safety and stability of the industrial chain and supply chain.
Silicon nitride ceramic is known as the “pearl on the crown of structural ceramics”. It has excellent properties such as lightweight, high toughness, self-lubrication, corrosion resistance, insulation and so on. As a ceramic bearing roller, silicon nitride ceramic ball is widely used in high-end precision machine tool spindle, automobile, wind driven generators and high-speed and high-precision ceramic bearings for transmission system. It is the key accessory of ceramic bearing for engine and transmission system. However, China has been restricted and monopolized by the United States and Japan, and has relied on imports from the two countries for a long time, which have become the bottleneck of the development of key accessories for high-end equipment in China.
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