摘要
本钢采用优质铁水预处理-120 t转炉冶炼、硅铝钡锶钙复合脱氧-钢包精炼喷Si-Ca粉+RH-TB真空脱气-5 t铸锭-轧制工艺生产230 mm×230 mm×1 350 mm LZ50轴坯钢.生产结果表明,由于控制C 0.47%～0.50%,Si 0.20%～0.35%,Mn 0.71%～0.85%,且钢中P、S≤0.02%,平均[H]=1.77×10-6,平均[O]=12.22×10-6,使轴坯钢具有良好的低倍组织和稳定的机械性能,产品质量达到TB/T2945-1999标准要求.
The 230 mm×230 mm×1350 mm LZ50 steel billet for vehicle axle is produced by quality hot metal pretreatment -120t converter melting and SiAlBaSrCa combined deoxidizing - ladle refining with Si-Ca powder injection ＋ RHTB vacuum degassing -5t ingot casting - rolling process. The production results showed that due to controlling C content between 0.47%～0.50%, Si 0.20%～0.35%, Mn 0.71%～0.85%, both P, S in steel ≤0.02%, average [H] = 1.77×10^-6, average [O] = 12.22×10^-6, the LZ50 steel billet had excellent macro structure and constant mechanical properties, and the quality of products was up to the requirement of TB/T2945 standard.
出处
《特殊钢》
北大核心
2005年第6期61-62,共2页
Special Steel
