论文部分内容阅读
二系铸工教研室的几位同志,在空冷条件下得到了一种硬度高达HRC54—58的球墨铸铁。多种方法研究确认,这种经正火处理的球铁,其基本组织为“马氏体+残余奥
Two castors Department of several comrades, in the air-cooled condition has been a hardness of up to HRC54-58 ductile iron. A variety of methods to study confirmed that the normalized ductile iron, the basic organization of "martensite + residual Austrian