高压气瓶用钢34Mn2V连铸坯的生产实践

Production Practice of Steel 34Mn2V Concasting Bloom for High Pressure Bottle

包钢采用 80t转炉 ,83tLF(VD) ,4流弧形连铸机生产断面为 (mm) :2 80× 32 5、2 80× 380、319×4 10高压气瓶用钢 34Mn2V连铸坯 ,LF(VD)后的平均成分为 (% ) :0 34C ,0 2 5Si,1 5 9Mn ,0 0 15P ,0 0 0 4S ,0 10V ,LF(VD)脱硫率为 84 6 2 % ,钢中氢含量为 (0 94～ 1 15 )× 10 -6。叙述了转炉 ,LF(VD) 。

The steel 34Mn2V concasting blooms with section (mm): 280×325, 280×380, 319×410 for high pressure bottle are produced by 80 t converter, 83t LF(VD) and four strand curved concasting machine. The average chemical compositions of steel after LF(VD) treatment are 0.34C, 0.25Si, 1.59Mn, 0.015P, 0.004S, 0.10V, the desulphurization of LF(VD) treatment is 84.62%, and hydrogen content in bloom is (0.94～1.15)×10 -6. The operation practice of converter, LF(VD) and concasting are presented in this paper.