Smelting process of Mn18Cr18N high nitrogen austenitic stainless steel
CAO Cheng-xiang1, CUI Huai-zhou2, LIANG Qiang2, WU Lin3, NING Xiao-zhi3
1. Institute for Special Steels, Central Iron and Steel Research Institute, Beijing 100081, China; 2. Technology Research Institute, Central Iron and Steel Research Institute, Beijing 100081, China; 3. Engineering Steel Research Institute, Central Iron and Steel Research Institute, Beijing 100081, China
Abstract：In order to study the smelting process of Mn18Cr18N high-nitrogen austenitic stainless steel, smelting technology on Mn18Cr18N 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.
曹呈祥, 崔怀周, 梁强, 吴林, 宁小智. Mn18Cr18N高氮奥氏体不锈钢的冶炼工艺[J]. 中国冶金, 2021, 31(5): 98-103.
CAO Cheng-xiang, CUI Huai-zhou, LIANG Qiang, WU Lin, NING Xiao-zhi. Smelting process of Mn18Cr18N high nitrogen austenitic stainless steel[J]. China Metallurgy, 2021, 31(5): 98-103.
JIANG Zhou-hua, LI Hua-bing, CHEN Zhao-ping, et al. The nitrogen solubility in molten stainless steel [J]. Steel Research International, 2005, 76(10): 740.
2021, Vol. 31 
