SPA-H钢冷弯开裂研究及工艺改进  

Research on Cold Bending Cracking and Improving Methods of SPA-H Steels

作　　者：赵伟隽[1,2] 孔小东[1] 甘众远 夏明炜 

机构地区：[1]海军工程大学理学院,湖北武汉430000 [2]马钢股份有限公司制造部,安徽马鞍山243000

出　　处：《金属材料与冶金工程》2016年第1期37-41,62,共6页Metal Materials and Metallurgy Engineering

摘　　要：马钢公司生产的SPA-H钢材在加工过程中出现折弯开裂现象。通过电镜、能谱研究分析后发现材料失效主要是由硫化锰夹杂和磷元素偏析所造成。此外,带钢横截面上的延伸率不均也会导致材料在加工过程中因应力集中而失效。根据生产失效情况制定了炼钢和热轧的工艺改进措施,有效解决了生产异常问题。The bending cracking occurred in the processing of the SPA-H steels produced by the Ma Steel. The results of the analysis of the electron microscope and spectra study showed that the cracking was caused by the segregation of manganese sulfide inclusions and phosphorus, as well as the uneven extension rate of the cross sections of the strips. Therefore, combining with the actual production condition, Ma Steel improved the steelmaking and hot rolling schedule.Finally the problem was solved.

关 键 词：SPA-H钢 冷弯开裂 夹杂 磷偏析 延伸率 

分 类 号：TG335.5[金属学及工艺—金属压力加工]