摘要
叙述太钢二炼钢厂90 t LF精炼0Cr18Ni9奥氏体不锈钢时对钢中夹杂物的控制效果。工艺实践表明,钢水经VOD后,钢中氧含量为(40～55)×10^(-6),再经LF喂铝线0.3～1.0 kg/t时,可使钢中氧含量进一步降至(24～35)×10^(-6),同时钢中夹杂物数量减少40%以上;接着喂0.9～1.5 kg/t硅钙线使钢中夹杂物变性成球状,同时通过200～600 L/min氩气搅拌10～20 min和50～150 L/min氩气搅拌15～20 min,使钢中夹杂物数量进一步减少50%以上,并去除了钢中尺寸为30μm以上的夹杂物。
The controlling results of inclusions in steel during refining austenite stainless steel 0Cr18Cr19 in a 90 t ladle furnace at No2 steelmaking plant, Taiyuan Steel are presented. Operation practice shows that after VOD process, oxygen content in steel is （40 -55 ）×10^-6, then feeding 0. 3 -1.0 kg/t aluminum wire in LF, the oxygen content in steel further decreases to （24 -35） ×10^-6 while the amount of inclusions in steel decreases by more than 40%; followed by feeding 0. 9 - 1.5 kg/t silicon-calcium wire, the inclusions in steel are modified to spheroid, and with 200 - 600 L/rain argon stirring for 10 -20 rain and 50 - 150 L/rain for 15 -20 min, the amount of inclusions in steel further decreases by more than 50% and the inclusions size more than 30 μm are removed from liquid steel.
出处
《特殊钢》
北大核心
2010年第3期33-34,共2页
Special Steel
关键词
90
t
LF
奥氏体不锈钢
精炼
纯净度
90 t LF, Austenite Stainless Steel, Refining, Cleanliness
