摘要
依据钢的技术要求,设计了钢的化学成分及内控要求,采用纯净钢技术控制S、P及夹杂物,选用优质废钢和铁水控制As、Sn、Pb、Sb、Bi等有害元素,并通过Ca处理降低夹杂物的危害,莱钢采用EAF-LF-VD-CC工艺流程开发了P22管坯钢。实物质量检测表明,钢质纯净,微量有害元素低,回火脆性敏感系数J、CEF控制理想,圆坯低倍组织和表面质量良好。
Based on the technology of steel requirements, the chemical composition and internal control requirements of the steel were designed. Using clean steel technology to control S, P and inclusion, selecting high-quality scrap and molten iron to control As, Sn, Pb, Sb, Bi and other harmful elements, and the Ca treatment can reduce the harm of the inclusion. P22 tube blank steel was produced by the process“EAF-LF-VD-CC”in Laiwu Steel, physical quality inspection shows that the steel is pure, the trace harmful elements are low, the temper brittleness sensitivity coefficient J and the CEF value were controlled ideal, the macrostructure and surface quality of the round billet are better.
出处
《山东冶金》
CAS
2016年第3期15-17,共3页
Shandong Metallurgy
关键词
P22管坯钢
大圆坯
回火脆性敏感系数
夹杂物
P22 tube blank steel
large size round billet
temper brittleness sensitivity coefficient
inclusion
