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| 20Cr13 Stainless Steel Smelted by VOD Furnace Under Silicon Deoxidation Process |
| WANG Xin-chao1, YOU Zhi-min1, CHENG Guo-guang1, KOU Yu-shan2, ZUO Hui2, CHEN Lie2 |
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Xining Special Steel Co., Xining 810000, Qinghai, China |
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Abstract Under the background 20Cr13 stainless steel smelted by 30 t EAF-VOD-LF-IC process, through thermodynamic calculation, effects of basicity, alloy content and steel temperature under the process of re-slag on the equilibrium oxygen content of liquid steel were studied after silicon deoxidation treatment in VOD refining process. The results show that the oxygen content is significantly decreased with the basicity of the slag increasing, the slag basicity should be in more than 2 in actual production. In order to ensure the smelting effect of adding alloy for deoxidation of liquid steel, It should ensure that the silicon content of 0.3% or more. With the temperature decrease, the equilibrium oxygen content in steel will decrease. Effects of slag basicity on the content of dissolved equilibrium oxygen content and the total oxygen content of actual production is basically in the same. A linear relationship between the content of dissolved equilibrium oxygen content and the total oxygen content of actual production was fitted.
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Received: 22 August 2013
Published: 05 August 2014
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2014, Vol. 49 
