100 t EAF LF CCM流程生产SWRH82B的工艺实践

安钢第一炼轧厂采用100 t FSF LF 6机6流工艺路线生产冶炼了预应力钢绞线SWRH82B。其关键工艺参数控制：电炉终点w(C)＝050％～070％，精炼炉控制精炼时间大于40 min，保证上钢前弱吹氩，控制钢水中夹杂物，连铸中中间包温度控制在 1482～1497 ℃，拉速22～24 m/min，采用结晶器电磁搅拌和末端电磁搅拌，全程保护浇注。结果表明，实物的质量和力学性能均完全达到了使用要求。

Production Practice of SWRH82B on 100 t EAF-LF-CCM Line

Wire rod for PC steel stranded wire of SWRH82B was making by EAF-LF-CCM process in No 1 steelmaking plant of Anyang Iron and Steel Company, the key process parameters are as follows： carbon reached 0.50% to 0.70% at taping, refining time is more than 40 minutes, weak blowing argon before refining finished, controlling inclusions content, controlling steeling temperature 1482 ℃ to I 497℃ in tundish, the casting speed is 2.2 to 2.4 m/rain, using mold electromagnetic stirring and end electromagnetic stirring, protecting the casting completely. The quality of physical and mechanical properties fully satisfy requirement.