材料期刊网

本文论述了以马钢X70、X80管线钢生产为平台的超低硫钢的生产工艺研究。分别对转炉、LF精炼过程钢水[S]含量控制进行了分析，转炉吹炼过程增硫主要来自于铁水脱硫渣和废钢中带入的硫，LF炉深脱硫主要取决于钢包顶渣的控制和强搅脱硫的搅拌功。通过工艺调整，生产X70、X80钢种时LF炉终点[S]含量稳定控制在0.0050％以下，平均[S]含量为0.0011％。

In this paper the technologic research of the ultra low sulfur steel based on the production of X70/X80 pipe-line steel was discussed. The control of [S] content during BOF blowing and LF refining were analysed, the sulfur pickup during BOF blowing was mainly caused by molten iron slag after pretreatment and scrap, the LF deep desulfuriztion depends on the control of the top slag and the strong stirring power. By technologic adjustment, the [S] at the end of LF was stability controled below 0.0050%, and the average [S] was 0.0011%.