VOD炉冶炼20Cr13不锈钢硅脱氧工艺  

20Cr13 Stainless Steel Smelted by VOD Furnace Under Silicon Deoxidation Process

作　　者：王鑫潮[1] 游志敏[1] 成国光[1] 寇玉山 左辉 陈列 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]西宁特殊钢公司,青海西宁810000

出　　处：《钢铁》2014年第8期31-34,80,共5页Iron and Steel

摘　　要：以实际工艺流程30 t EAF-VOD-LF-模铸冶炼20Cr13不锈钢为背景,通过热力学计算,对VOD精炼硅脱氧处理后,重新造渣过程中炉渣碱度、合金含量以及钢液温度对钢液中平衡氧含量的影响进行了研究。研究结果表明:钢液中的氧含量随炉渣碱度的增加呈现明显的减小趋势,实际生产中炉渣碱度一般应确保在2以上;为了保证添加合金进行脱氧的冶炼效果,应保证钢液中的硅的质量分数在0.3%以上;降低冶炼温度有利于降低钢液平衡氧含量;炉渣碱度对平衡溶解氧含量和实际生产全氧含量的影响规律基本相同,拟合出平衡溶解氧含量与实际全氧含量之间存在线性关系。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.

关 键 词：20Cr13不锈钢 热力学计算 VOD精炼 硅脱氧工艺 氧含量 

分 类 号：TF764.1[冶金工程—钢铁冶金]