半镇静易切削钢中氧活度的测定与控制  

OXYGEN ACTIVITY DETERMINATION AND CONTROL IN FREE CUTTING SEMI-KILLED STEEL

作　　者：封顺怀 李景堂[1] 孙爱梅 

机构地区：[1]抚顺钢铁公司,东北大学,第一汽车制造厂

出　　处：《钢铁》1996年第2期17-20,共4页Iron and Steel

摘　　要：在实验室条件下研究了铁液中硫与氧的数学回归方程式，ａ＿（［Ｏ］）＝－６９０．３９［Ｓ］＋５２８．３７，设计了新钢种的化学成分，在工业炉中炼成半镇静易切削钢，钢包中氧活度在１５０～２５０ｐｐｍ范围内。In laboratory,the regression equation of sulphur and oxygen in hot metal was studied as a[o]=-690.39[S]+528. 37.The chemical composition of new grade steel was designed.A freecutting semi-killed steel has been investigated and produced successfully in industrial-scale furnace,and the oxygen activity measured in ladles was at the level of 150～250 ppm.

关 键 词：半镇静易切削钢 氧 活度 控制 炼钢 测定 

分 类 号：TF701.3[冶金工程—钢铁冶金]