82B硬线钢中夹杂物热力学分析及控制

Iron Steel Vanadium Titanium(2017)

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Abstract
对82B硬线钢中夹杂物的形成条件进行了热力学理论计算,结果表明:采用低碱度渣时,钢液中[Al]S随着夹杂物中wcao/wsO2比值和Al2O3含量增大而增加,为把CaO-SiO2-Al2O3夹杂物控制在塑性区,钢液中[Al]S应小于6×106.实际控制结果表明,按照热力学计算结果控制精炼炉渣成分(控制顶渣中的Al2O3含量低于10%),同时保证充足的软吹条件(合适的氩气流量和大于15 min的软吹时间),可以达到夹杂物控制目标.
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