论文部分内容阅读
Cr12型高铬钢具有高淬透性、高机械强度、高耐磨性和热处理变形小的特点。因此常用来做冷变形模具。这类钢的热处理工艺有两种:一是“一次硬化乡工艺,即通常在980～1030℃加热;二是“二次硬化”工艺,加热温度在1115℃以上。但是都需要有一套高温加热设备,但在一般小厂都缺乏这种设备,而应用中温设备来加热会严重地影响设备的使用寿命。为此,我们研究了“低”温淬火工艺,几年来进行了一大批Cr12型高铬钢的冷冲模、硅钢片落料模、冷剪切刀的热处理,实践证明效果较好。
Cr12-type high-chromium steel with high hardenability, high mechanical strength, high wear resistance and heat treatment of small deformation. So commonly used to cold deformation mold. This type of steel heat treatment process has two kinds: First, “a curing township process, that is usually heated at 980 ~ 1030 ℃; second is the” second hardening “process, the heating temperature above 1115 ℃, but all need a set of high temperature heating Equipment, but in the small factories are generally lack of such equipment, and the application of medium temperature equipment to heat will seriously affect the service life of equipment.To this end, we studied the ”low" temperature quenching process, a few years a large number of Cr12-type high Chromium steel die, silicon steel blanking die, cold shear knife heat treatment, the practice proved effective.