The development of quenching process of high chromium casting ball

Release time：2025-03-20

1) In the early 1990s, due to the vigorous development of the domestic cement industry, in order to meet the requirements of cement plants. Our Anhui Ningguo steel ball enterprises began to shift from low chromium steel balls to the development of high chromium steel balls. In order to ensure that the hardness of high chromium steel balls is > 56HRC, the chromium content of steel balls needs to be above 12%, the heat treatment uses the 960℃ wind quenching process, and the tempering process uses the car type heat treatment furnace for 8 hours low temperature tempering

2) With the continuous competition in the market, by the beginning of this century, the high chromium ball oil quenching process has been developed and mass-produced in Ningguo, Anhui Province, and the hardness after tempering can reach more than 58HRC. The high chromium ball oil quenching process is widely used in cement building materials, metallurgical mines, thermal power energy and other industries.

3) In recent years, the rapid development of new materials and new technologies, PAG,PUP and other water-based media quietly appear, high chromium steel ball through the liquid quenching process and low temperature tempering, hardness HRC can reach more than 62, liquid quenching process high chromium ball is currently used in the mine super large ball mill response.

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