在水模试验的基础上改变了天津钢管集团有限公司第一炼钢厂150 t钢包的吹氩工艺，通过示踪剂追踪、金相分析、大样电解、扫描电镜（SEM）、电子探针（EDS）等手段比较分析了改进后的工艺与原工艺对石油套管用钢39Mn2V非金属夹杂物的去除效果。结果表明，原工艺精炼前后氧的质量分数降低率为35.42%，微观夹杂物和大颗粒夹杂物的去除率分别为59.85%、93.43%，而改进后的工艺精炼前后对应值为44.31%、64.29%、95.88%。由此可见，改进后的工艺在降低氧含量和去除夹杂物方面均优于原工艺。
Based on the water model experimental results, 150 t ladle argon blowing process at No.1 Steelmaking Plant, Tianjin Pipe Corporation Ltd. was improved. Analytical techniques such as tracers, metallographic examination, electrolysis, SEM and EDS were applied to compare the effect of inclusion removal for casing steel treated by two different argon blowing processes during LF refining. The results show that the reduction rate of total oxygen,with microinclusions and largesized inclusions was 35.42%, 59.85% and 93.43% respectively after ladle refining before improvement.The corresponding values of improved process were 44.31%, 64.29% and 95.88%.
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