真空感应炉冶炼含氮不锈钢的合金增氮工艺  被引量:4

Adding Nitrogen Process by Alloy for Melting Nitrogenous Stainless Steels in Vacuum Induction Furnace

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作  者:赵鸿燕[1] 

机构地区:[1]太原钢铁(集团)公司技术中心,太原030003

出  处:《特殊钢》2008年第1期43-44,共2页Special Steel

摘  要:摘要试验研究了200kg真空感应炉冶炼含氮不锈钢Crl3(0.04%~0.06%N)、Cr23Nil9(0.22%-0.28%N)和Cr22Ni9(0.15%-0.19%N)时,在(0.1-0.6)×10’Pa氩气或氮气下加氮4gfh(56.2%Cr、7.33%N)增氮工艺。结果表明,在氮气保护下加氮化合金,氮回收率为80%以上;在氩气保护下加氮化合金,氮回收率仅为10%。提高炉内氮气压力,控制合适的加入温度,加入小粒度氮化铬,氮的回收率可达100%。The adding nitrogen processes by added nitrided ferrochrome (56. 2%Cr, 7.33%N) with (0. 1 -0. 6) × 10^5 Pa argon or nitrogen atmosphere in 200 kg vacuum induction furnace for melting nitrogenous stainless steel Crl3 (0. 04% -0. 06%N) , Cr23Ni19 (0. 22% -0. 28%N) and Cr22Ni9 (0. 15% -0. 19%N) have been tested and studied. Results showed that with added nitride alloy in nitrogen atmosphere the yield of nitrogen was more than 80%, while with added nitride alloy in argon atmosphere the yield of nitrogen only 10%. With increasing nitrogen pressure in furnace, controlling suitable adding temperature and adding smaller size nitride ferrochrome, the yield of nitrogen was up to 100%.

关 键 词:真空感应炉 含氮不锈钢 氮气保护 氮化铬 氮回收率 

分 类 号:TF764.1[冶金工程—钢铁冶金]

 

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