Abstract: The  free cutting steel  12L14(≤0. 15C,0.85~1. 15Mn,0.26~0.35S,0. 15~0.35Pb)is    produced    by process of 60 t Consteel electric are fumace - alloying during EBT tapping- concasting at Guiyang Stecl. The production results showed that the difference in content of lead at section of cast billet was ±0.02% and the yield of lead was 60%~ 70% by feeding mechanism continuously to add 20 mm diameter balls with adding rate 120 pills/min in impact zone of tundish and argon stiring in tundish. The results of cutting by user indicated that the steel had excellent cutting property.

Key words: Containing Lead Frec-Cutting Steel,Billet Concasting,Adding Lead in Tundish

摘要： 贵阳特殊钢公司采用60 t Consteel电弧炉-EBT出钢合金化-LF-连铸机工艺生产(%):≤0.15C,0.85~1.15Mn,0.26~0.35S,0.15~0.35Pb易切削钢12L14。生产结果表明,通过给料机向中间包冲击区连续加入直径20 mm铅丸,加入速度为120粒/min,同时进行中间包吹氩搅拌,铸坯断面铅含量差值为±0.02%,铅回收率为60%~70%。用户使用结果表明,该钢具有良好的切削性能。

关键词: 含铅易切削钢 , 方坯连铸, 中间包加铅