在轴承行业的钢球加工中,近十多年来国外研究成功了一种新的合金铸铁板,经过特定的铸造工艺和热处理工艺之后在专用设备上加以使用,来代替锉削和软磨工艺。据有关资料介绍,其工效提高3～5倍甚至8倍以上。此项新工艺即称光球工艺,使钢球粗加工的技术水平前进了二十年,是钢球加工中的一项重大革命。国内从一九七三年以来先后有不少单位 In the steel ball bearing industry, nearly a decade of successful foreign study of a new alloy cast iron plate, after a specific casting process and heat treatment process to be used on special equipment to replace the file cutting and grinding process. According to the relevant information, its work efficiency increased by 3 to 5 times or even 8 times. The new process, known as the photolithography process, advanced the technical level of steel ball roughing for twenty years and was a major revolution in the processing of steel balls. There have been many units in China since 1973