Effect of Slag Composition on Al Content During Electroslag Remelting Process of Low-Al Steel
Author of the article:ZHAO Hongyan;LIU Chengzhi;DU Xiaojian
Author's Workplace：State Key Laboratory of Advanced Stainless Steel Materials,Taiyuan Iron and Steel(Group)Co.,Ltd.,Taiyuan 030003,China;Institute of Special Metal Materials and Equipment Research,North University of China,Taiyuan 030051,China;School of Mechanical Engineering,North University of China,Taiyuan 030051,China
Key Words：electroslag remelting low-Al steel slag composition Al content
Abstract：The control of low-Al content is difficult in the process of electroslag remelting.The control of Al content in low-Al wire steel ER90S,TT65-G and low-Al stainless steel 1Cr21Ni5Ti was studied.Low-Al wire steel and low-Al stainless steel were smelted by CaF2-Al2O3-CaO-SiO2 slag system and CaF2-Al2O3-CaO-MgO-TiO2 slag system respectively in 500 kg electroslag remelting furnace.The results show that Al content in ingot of high Si,high Mn and low-Al wire steel smelted by CaF2-Al2O3-CaO-SiO2(57∶20∶20∶3)slag system is less than 0.015%.The increase of Al in the ingot head and tail of high Ti and low-Al stainless steel smelted by CaF2-Al2O3-CaO-MgO-TiO2(51∶20∶20∶3∶6)slag system is less than 0.02%.
