The industrial production process of rare earth steel involves the problem of yield of rare earth and stable yield is the important guarantee for stable performances of rare earth steel products. The effects of addition of position,ad-dition amount and composition of liquid steel ( oxygen activity,sulfur content) on yield of rare earth for rare earth steel are studied by adding rare earth in ladle and sampling analysis of tundish. The results showed that the yield of rare earth was increased in turn by adding rare earth in ladle,tundish and crystallizer;the larger the addition amount of rare earth alloy before off-position of ladle furnace,the lower the yield;the higher the contents of oxygen and sulfur in liquid steel,the lower the yield of rare earth.
关键词
添加工位/添加量/钢液成分/稀土收得率
Key words
addition of position/addition amount/composition of liquid steel/yield of rare earth
维普
万方数据