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冲裁模寿命主要取决于工作部件表面层的状态。已确认,当凹模和凸模的硬度从HRC57减低到HRC51时,Y8A钢(FOCTM35—74)冲裁模冲压厚度为6mm的CT3钢寿命缩短3/4。X12M钢(ΓOCT5950—73)冲裁模冲压12X18H10T钢(ΓOCT5949—75)的寿命缩短到1/30。因此,冲裁模寿命主要又取决于热加工。冲裁模工作部件硬度在HRC57～62范围内,被认为是最佳的。此外,最后形成表面微观磨损也具有重要的意义。当制造和刃磨冲裁模时,作为最后成形工作表面方法的磨削将使凹和凸模表面层和切削刃的状态发生显著
Blanking die life depends mainly on the status of the surface of the working parts. It has been confirmed that CT8 steel of Y8A steel (FOCTM35-74) blanking die stamping 6 mm in thickness reduces the service life by 3/4 when the hardness of the die and the punch is reduced from HRC57 to HRC51. X12M steel (ΓOCT5950-73) blanking die stamping 12X18H10T steel (ΓOCT5949-75) life expectancy shortened to 1/30. Therefore, blanking die life mainly depends on the thermal processing. Blanking work piece hardness HRC57 ~ 62 in the range, is considered to be the best. In addition, the final formation of micro-surface wear is also of great significance. Grinding as the last method of forming a working surface will make a significant effect on the condition of the concave and convex surface layers and the cutting edges when manufacturing and sharpening the blanking die