1、主要工作零件的材料的问题，选材不当。材料性能不良，不耐磨；模具钢未精炼，具有大量的冶炼缺陷；凸凹模，锻坯改锻工艺不完善，遗存有热处理隐患。2、结构设计问题，冲模结构不合理。细长凸模没有设计加固装置，出料口不畅现堆集，卸料力过大使凸模承受交变载荷加剧等。3、制模工艺不完善，主要表现在凸、凹模锻坯内在质量差，热处理技术及工艺有问题，造成凸、凹模淬不透，有软点及硬度不均。有时产生微裂纹、甚至开裂，研磨抛光不到位，表面粗糙度值过大。

1, the main work parts of the material problems, improper selection. The material has bad performance and no abrasion; the die steel is not refined, and has a large number of smelting defects; the convex and concave die, the forging process of the forging blank is not perfect, and the remains have the hidden trouble of heat treatment. 2. The structure design problem, the die structure is not reasonable. The slender punch has no design reinforcement device, the discharge port is not smooth, it is stacked, and the unloading force is over. 3. The molding process is not perfect. It is mainly manifested in the poor internal quality of the convex and concave forging billets, and the heat treatment technology and technology have problems, which cause the convex and concave die hardenability, and there are soft points and uneven hardness. Sometimes there are micro cracks and even cracks. The grinding and polishing are not in place, and the surface roughness is too large.