破碎锤活塞淬火开裂失效分析

Failure Analysis on the Quench Cracking of the Piston of Quartering Hammer

用户在使用GCr15生产破碎锤活塞过程中,出现批量热处理开裂缺陷。经对原始钢材及开裂制件进行化学成分、低倍、夹杂物、金相分析,发现材料心部致密度较低且热处理工艺不佳。经对钢材质量加严把控并对热处理工艺加以微调后,此类缺陷得到了有效的控制。

In the process of using GCr15 to produce the piston of quartering hammer,the user appears a batch heat treatment cracking defect.By analyzing the chemical composition,low times,inclusions and metallographic analysis of original steel and cracked parts,we found that the density of the center is low and the heat treatment process is not too well.After controlling the quality of steel and adjusting the heat treatment process,this kind of defect are effectively controlled.