3Cr2W8V钢属于过共析钢,它主要用于制造高温下受高应力,受冲击负荷小的各种凸凹模具.由于它含有多量易形成碳化物的Cr、W、V等合金元素,故在高温下具有较高的强度和硬度以及良好的淬透性.但该种钢的韧性,塑性较差,在生产中很易产生裂纹.本文着重分析裂 3Cr2W8V steel belongs to the hypereutectoid steel, it is mainly used for the manufacture of high stress by high temperature, the impact load by a small amount of convex and concave mold because it contains a large amount of easy to form carbide Cr, W, V and other alloying elements, Under the higher strength and hardness and good hardenability.But the toughness of the steel, poor plasticity, is easy to produce cracks in the production.This article focuses on the analysis of crack