热处理后的零件和工模具,大都要进行后续工序的加工,如磨削加工、线切割成形、表面化学处理、变形校正和合装配套等。对于高硬度的钢件,在后续工序加工过程中往往会引起裂纹或开裂而导致报废。根据我们近几年的统计,如以热处理工序产生开裂的废品总数为基数作对比,热处理工件在 After the heat treatment of parts and tooling, most of the follow-up process to be processed, such as grinding, wire cutting, surface chemical treatment, deformation correction and fit the package and so on. For high hardness of steel, in the subsequent process of processing often lead to cracks or cracking lead to scrapped. According to our statistics in recent years, such as heat treatment process to produce the total number of cracking for comparison, the heat treatment of the workpiece in