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一、前言冷锻件正迅速向形状复杂、高精度及材料高合金化发展。就模具材料的背景而言,有炼钢技术的改进,新材料开发,市场上大量提供多种钼系高速钢和可以根据模具结构零件的负荷状态选择材质等等。但作为模具制造重要环节的热处理现状却是在许多工厂还没有适应生产的标准,正在根据钢厂提供的资料进行摸索。可以认为,这就是模具寿命离期望值尚很远,不稳定性很大的原因。最近,有关模具零件的负荷,在冲头上超过350kgf/cm~2的高负
First, the foreword Cold forgings are rapidly to the complex shape, high precision and high alloy material development. In the context of mold materials, there are improvements in steelmaking technology, new material development, a large number of available on the market a variety of high-speed molybdenum steel and mold structure components according to the load status of the material selection and so on. However, as an important part of the heat treatment mold manufacturing status is that in many factories have not yet meet the production standards, is based on the information provided by the steel miner. Can think that this is the mold life expectancy is still far away, the reason for the great instability. Recently, the load on mold parts exceeded the high negative of 350 kgf / cm 2 on the punch