Abstract: The  test   and   study   on   dephosphorization   of  0.12～0.40C,10.06～18.89Cr,0.60～11.00Ni  molten stainless steel at refining temperature between 1853 K and 1893 K has been carried out in a 5 kg medium frequency induction furnace with MgO crucible by using 45~65BaO,35～55BaF₂,3~7 Cr₂O₃ slag series. The test results showed that the phosphorus content in molten high chromium stainless steel in refining period decreased to 0.013% from 0.029% by using the test slag series,the dephosphoriing ratio was more than 20%;and as(BaO)/(BaF₂)was 60/40,initial silicon content  in   steel   ≤0.08%,refining   temperature   ≤1600℃ (1873K) and   initial   [Cr]%≤15%,the   beter   dephosphorization effect of molten high chromium stainless steel could be obtained.

Key words: High Chromium Stainless Steel,BaO-BaF?-Cr?O?Slag Series,Refining,Dephosphorization

摘要： 在5 kg MgO坩埚中频感应炉中,用成分(%)为45~65BaO、35~55BaF₂、3~7Cr₂O₃渣系对成分(%)为0.12~0.40C、10.06~18.89Cr、0.60~11.00Ni,精炼温度1 853~1 893 K的不锈钢水进行脱磷试验和研究。实验结果表明,该试验渣系能在精炼期将高铬不锈钢水中的磷从0.029%降至0.013%,平均脱磷率超过20%;当(BaO)/(BaF₂)为60/40、初始硅含量≤0.08%、精炼温度≤1 600℃(1 873 K)、初始[Cr]≤15%时,可取得较好的高铬不锈钢水脱磷效果。

关键词: 高铬不锈钢, BaO-BaF?-Cr?O? 渣系, 精 炼, 脱 磷