Experimental Study on Decarburization of Stainless Steel under Electromagnetic Levitation

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Zheng, W.^1 ; Zhang, G.F.^1,3 ; Yi, B.^1,2 ; Yan, P.^1 ; Shi, B.H.^1 ; Jiang, Q.^1

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan

650093, China^1

Hunan Zhongke Electric Co., Ltd., Yueyang, Hunan

414000, China^2

Key Laboratory of Complex Iron Resources for Clean Metallurgy, Education Department of Yunnan Province, Kunming, Yunnan

650093, China^3

关键词: Alloy element;    Argon oxygen decarburizations;    Carbon content;    Electromagnetic levitation;    High temperature;    Mixture gas;    Molten steel;    Steel refining;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012132/pdf
DOI  :  10.1088/1757-899X/423/1/012132

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The difficult in making stainless steel is decarburization and chromium conservation. Although the traditional AOD (Argon-Oxygen Decarburization) process was proved to be effective on decarburization and loss is minimized, the effect of the refractories on molten steel at high temperature still needs to be taken into account. However, application of CO2 in decarbonization during steel refining is a potential way to retain valuable alloy elements. Nevertheless, there are few reports about CO2 refining Fe-Cr-C alloy under vacuum levitation. In the present work, experimental data was collected for levitated stainless droplets exposed with Ar-CO2 mixture gas. The result shows that: (1) Stainless steel was refined by CO2 under electromagnetic levitation, the carbon content loss to 0.043 wt%; (2) Variation of gas flow rate and CO2 partial pressure has ignorable effect of chromium in the sample, and the effect of chromium conservation is obvious.