1引言工厂中某冷冲压件系中碳钢制，冷冲焊接成型，经淬火、回火使用，以满足其组织、性能要求。生产中曾发生过冷冲压裂纹质量问题，从工艺、设备和原材料的显微组织方面分析了该零件产生冷冲压裂纹的原因，提出了改善材料组织与性能的生产工艺，有效地防止了该零件的冷冲压裂 1 Introduction A cold stamping factory in the Department of carbon steel, cold-formed by welding, quenching and tempering to meet its organizational, performance requirements. The cold stamping crack quality problem occurred in the production process. The reason of the cold stamping crack was analyzed from the microstructure of the process, equipment and raw materials. The production process of improving the microstructure and properties of the material was put forward, which effectively prevented the part Cold stamping