低铝Cr5支承辊用钢锭的开发  

Development of Low Aluminum Cr5 Steel Ingot Used for Backup Roll

作　　者：魏巍 李虹 张玉亭 黄凤泽 张志强 WEI Wei;LI Hong;ZHANG Yuting;HUANG Fengze;ZHANG Zhiqiang(Shigang Jingcheng Equipment Development and Manufacuring Co.,Ltd,Yingkou 115100,China)

机构地区：[1]石钢京诚装备技术有限公司,辽宁营口115100

出　　处：《铸造技术》2021年第3期168-171,共4页Foundry Technology

摘　　要：通过调整合金成分、渣料,优化LF精炼渣系,清理钢包残钢残渣,严格控制转炉出钢下渣。LF精炼渣系成分为:52%~56%CaO、15%~20%Al_(2)O_(3)、13%~18%SiO_(2)、5%~10%MgO、(TFe+MnO)≤0.5%、R 3.2~3.6。控制模温50~80 C,锭身浇铸速度1.2~1.5 t/min,冒口浇铸速度0.3~0.7 t/min,保证钢液面平稳上升,浇铸过程氩气保护。结果表明,可实现Cr5支承辊用钢锭成品[P]≤0.012%、[S]≤0.005%[AI]≤0.010%和[Ti]≤0.005%。By adjusting the alloy composition and slag materials,optimizing the slag system of LF refining,cleaning up the ladle residual steel residue,and strictly controlling the slag from the converter.The composition range of LF refining slag was 52%~56%CaO、15%~20%AlO,、13%~18%SiO_(2)、5%~10%MgO、(TFe+MnO)≤0.5%,R 3.2~3.6.The mold temperature was controlled from 50 C to 80 C,the pouring speed of ingot was 1.2~1.5 t/min,and the pouring speed of riser was 0.3-0.7 t/min,so as to ensure the smooth rise of molten steel level and the argon protection during the casting process.The results show that can realize Cr5 backup roll with ingot products[P]≤0.012%,[S]≤0.005%,[AI]≤0.010%and[Ti]≤0.005%.

关 键 词：CR5 钢锭 [Al]≤0.010% 

分 类 号：TF762[冶金工程—钢铁冶金]