Mn18Cr18N高氮奥氏体不锈钢的冶炼工艺  

Smelting process of Mn18Cr18N high nitrogen austenitic stainless steel

作　　者：曹呈祥 崔怀周[2] 梁强[2] 吴林[3] 宁小智[3] CAO Cheng-xiang;CUI Huai-zhou;LIANG Qiang;WU Lin;NING Xiao-zhi(Institute for Special Steels,Central Iron and Steel Research Institute,Beijing 100081,China;Technology Research Institute,Central Iron and Steel Research Institute,Beijing 100081,China;Engineering Steel Research Institute,Central Iron and Steel Research Institute,Beijing 100081,China)

机构地区：[1]钢铁研究总院特殊钢研究所,北京100081 [2]钢铁研究总院工艺研究所,北京100081 [3]钢铁研究总院工程用钢研究所,北京100081

出　　处：《中国冶金》2021年第5期98-103,110,共7页China Metallurgy

摘　　要：为了研究Mn18Cr18N高氮奥氏体不锈钢的冶炼工艺,采用加压感应炉+保护气氛电渣重熔工艺进行Mn18Cr18N高氮奥氏体不锈钢的冶炼工艺试验,冶炼过程中采用氮化合金与加压氮气渗入相结合的方法增氮。结果表明,随着氮气分压的增加,钢中氮质量分数随之增大;当冶炼过程中氮气分压提高0.03 MPa时,能够成功抑制皮下气泡的生产;试验钢经保护气氛电渣重熔后,钢中夹杂物会普遍降低,主要为细小的方形TiN夹杂。In order to study the smelting process of Mn18 Cr18 N high-nitrogen austenitic stainless steel, smelting technology on Mn18 Cr18 N high nitrogen austenitic stainless steel was investigated by using turbocharged induction furnace and protective atmosphere electroslag remelting. Alloy nitride and pressurized nitrogen infiltration were used to increase nitrogen in smelting process. The results show that nitrogen content increases with the increasing of nitrogen pressure. Skin blowholes are inhibited when nitrogen pressure increases by 0.03 MPa. The inclusions are generally reduced in the experimental steel after electroslag remelting, and the small square TiN inclusions are the main ones.

关 键 词：高氮奥氏体不锈钢 冶炼 电渣重熔 增氮 夹杂物 

分 类 号：TF764.1[冶金工程—钢铁冶金]