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我厂3PS产品上的刀片零件,见图1,原计划用淬火状态0.2毫米钢板进行冲制,但此材料均由西德进口,国内现无货源,因此只得用0.2毫米65Mn正火状态盘带材料,冲成形后进行淬火,工艺要求热处理:淬火HRC44～48(HV435～485)、不平度≤0.10。由于刀片厚度较薄、面积较宽,在热处理过程中,奥氏体容易发生分解而不易淬硬;即使淬硬了,但变形很大且很复杂(有波浪形,S形等);变形后需校正,又薄又硬的刀片,稍用力,就产生断裂,况且在刀片平面上要校平不平度为≤0.1
I plant 3PS blade products on the product, shown in Figure 1, the original plan to use quenched 0.2 mm steel for punching, but this material is imported from West Germany, there is no domestic source, so had to use 0.2 mm 65Mn normalized state disk Material, quenching after forming, process requirements Heat treatment: quenching HRC44 ~ 48 (HV435 ~ 485), roughness ≤ 0.10. Due to the blade thickness is thin, wide area, in the heat treatment process, austenite easily decomposed and difficult to harden; even hardened, but the deformation is very large and very complex (wavy, S-shaped, etc.); after deformation Need to be corrected, thin and hard blade, a little harder, it produces fracture, Moreover, in the blade plane to be uneven leveling ≤ 0.1