摘要
在42CrMo4钢锭镦粗时出现了表面裂纹缺陷。对裂纹处解剖后进行了化学成分、金相(OM)和扫描电镜(SEM)组织分析,对形成裂纹的原因进行了研究。结果表明:该锻造裂纹产生的主要原因是由于硅酸盐夹杂物的聚集,锻造时夹杂物局部产生应力集中导致的。建议优化冶炼工艺,采用高稳定性的耐火材料,保证钢材的纯净度。
Surface crack defects occur during upsetting of 42 CrMo4 ingot. After dissecting the crack, the chemical composition and microstructure of the crack were analyzed by OM and SEM, and the cause of the crack was studied. The results show that the main cause of the forging crack is the accumulation of silicate inclusions and the local stress concentration of the inclusions during forging. It is suggested to optimize the smelting process and adopt high stability refractories to ensure the purity of steel.
作者
史可庆
蔺立元
赵刚
桑学科
刘哲
张青
徐建
伊希豪
SHI Keqing;LIN Liyuan;ZHAO Gang;SANG Xueke;LIU Zhe;ZHANG Qing;XU Jian;YI Xihao(Jinlei Technology Co.,Ltd.,Laiwu 271105,China)
出处
《热加工工艺》
北大核心
2020年第3期154-156,共3页
Hot Working Technology
关键词
锻造
裂纹
硅酸盐
纯净度
forging
crack
silicate
purity degree
作者简介
史可庆(1991-),男,山东莱芜人,助理工程师,主要从事理化检验及失效分析研究,电话:18363480702,E-mail:412584684@qq.com
