真空感应炉冶炼含氮316L不锈钢的控氮工艺研究  

Research on Nitrogen-controlling Process for Melting Nitrogen-contained 316L Stainless Steel in VIM Furnace

作　　者：王明波[1,2] 刘海定[1,2] 黄国平[1,2] 罗维凡[1,2] 万红[1,2] 寇涛[1,2] 

机构地区：[1]重庆材料研究院有限公司,重庆400707 [2]国家仪表功能材料工程技术研究中心,重庆400707

出　　处：《材料导报（纳米与新材料专辑）》2013年第2期359-361,共3页

基　　金：重庆市国际科技合作项目(CSTC2012gg-gjhz0020)

摘　　要：通过试验研究了氮分压与316L不锈钢中氮溶解度的关系,研究表明钢中氮的溶解度随着氮分压的增大而增大.500 kg真空感应炉内冶炼含氮316L奥氏体不锈钢（N：0.1％～0.2％）,在充氮至（0.2～0.8）＆#215;105 Pa时加入FeCrN（Cr：60％,N：6％）.结果表明,在氮气保护环境中加入FeCrN,在充氮至（0.2～0.3）＆#215;l05 Pa时氮的收得率为65％～80％;在充氮至（0.5～0.6）＆#215;105 Pa时氮的收得率为80％～90％;进一步提升炉内氮气压力至0.8＆#215;105Pa,控制合适的钢液温度,氮的收得率可达100％.The influence of nitrogen partial pressure on the nitrogen solubility in nitrogen-contained 316L stainless steel was studied.Results showed that the nitrogen solubility increased with increasing the nitrogen partial pressure.The controlling nitrogen process was investigated by adding FeCrN （Cr：60 %,N：6 %） with （0.2-0.8）× 105 Pa nitrogen atmosphere in 500 kg vacuum induction furnace for melting nitrogen-contained 316L stainless steel （N：0.1%-0.2 %）.Results showed that with the nitrogen pressure （0.2-0.3）× 105 Pa the yield of nitrogen was 65 %-80%.And when the nitrogen pressure was to （0.5-0.6） × 105 Pa,the yield of nitrogen was 80%-90%.With increasing nitrogen pressure to 0.8× 105 Pa the yield of nitrogen was up to 100%.

关 键 词：真空感应熔炼 含氮316L不锈钢 氮溶解度 氮收得率 

分 类 号：TF133[冶金工程—冶金物理化学]