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锻压加工与其它塑性加工相比,一般说来,锻压加工模具受到较为苛刻的工作负荷,特别是温加工、热加工伴随着急热急冷,受到高的热应力作用。近年来应用的冷锻工艺:加工机械的高速运转(顶锻机每分钟加工数百件),高变形抗力材料的使用(18—8不锈钢,合金钢)以及卷材切断面(非磷化处理)的加工等,在冷锻的大量生产中,仍用原来的工模具。结果,工模县表面的平均温度将近200～300℃,局部地区甚至更高。
Forging processing Compared with other plastic processing, in general, the forging die is subject to more demanding work load, especially warm processing, thermal processing accompanied by rapid thermal quenching, high thermal stress. In recent years, the application of cold forging process: high-speed processing machinery (top forging machine processing hundreds per minute), the use of high deformation resistance materials (18-8 stainless steel, alloy steel) and the coil cut surface (non-phosphating ) Processing, etc., in the mass production of cold forging, still use the original tooling. As a result, the average surface temperature of mold-making county will be nearly 200 ~ 300 ℃, even higher in some areas.