含硫汽车齿轮钢纯净度控制  

Purity control of sulfur-bearing gear steels for automobiles

作　　者：李润霞[1] 顾文涛[1] 胡喜军[1] 

机构地区：[1]抚顺特殊钢股份有限公司技术处,辽宁抚顺113001

出　　处：《物理测试》2016年第4期17-21,共5页Physics Examination and Testing

摘　　要：通过优化电炉出钢喷炭粉、调整脱氧制度、选择合适时机的钙处理、采用合理的调硫工艺和浇注前净搅拌操作等一系列措施,经"超高功率电弧炉冶炼+炉外精炼+真空脱气+连铸"工艺流程,批量生产出全氧含量不大于20×10-6、硫化物夹杂级别不大于2.0级的汽车用含硫齿轮钢,确定了含硫钢最佳的钙处理工艺,解决了连铸水口堵塞问题。The sulfur-bearing gear steel for automobiles with total content of oxygen less than 20×10-6and sulfide inclusion less than class 2.0 was produced through＂ultra high power electric-arc furnace smelt＋secondary refining vessel＋vacuum degassing＋continuous casting＂process by taking a series of measures,such as spraying carbon powder during EAF tapping,adjusting de- oxidation process,calcium treatment at appropriate stage,reasonable sulfur adjustment process and static stirring before casting. Moreover,the optimal calcium treatment process for sulfur-bearing gear steel was obtained. The problem of nozzle blocking in continuous casting was solved.

关 键 词：含硫齿轮钢 纯净度 夹杂物 

分 类 号：TF76[冶金工程—钢铁冶金]