铸造技术2025，Vol.46Issue(11)：1119-1124,6.DOI:10.16410/j.issn1000-8365.2025.4210
电渣重熔冶炼贝氏体辙叉钢渣系设计研究
Design and Research of Slag System on Bainitic Frog Steel for Electroslag Remelting
摘要
Abstract
On the basis of the composition and liquidus temperature characteristics of bainitic frog steel,the phase diagram of the CaF2-Al2O3-CaO-MgO slag system,as well as physical parameters such as the melting point,viscosity,and conductivity,was calculated via FactSage 7.3 thermodynamic software.Furthermore,a new specialized slag system for bainitic frog steel was optimized.The differences in the metallurgical quality,composition,and microstructure of bainitic frog steel during electroslag remelting between the traditional binary slag system containing 70 wt.％CaF2-30 wt.％Al2O3(slag 1#)and the designed slag system containing 47.5 wt.％CaF2-21.5 wt.％Al2O3-28 wt.％CaO-3 wt.％MgO(slag 2#)were investigated in a 10 kg electroslag remelting furnace.Compared with that of the traditional binary slag system,the desulfurization rate of bainite frog steel smelted by designing slag-based electroslag remelting is greater,reaching 90.91％.However,there is a certain degree of burning loss of silicon in steel,and the increase in hydrogen content is greater during electroslag remelting by slag 2#.The microstructure of the electroslag ingots smelted by the two slag systems is relatively good.The designing slag based remelting electric slag ingot has better surface quality.关键词
贝氏体辙叉钢/电渣重熔/渣系设计/脱硫Key words
bainite frog steel/electroslag remelting/design of slag system/desulfurization分类
矿业与冶金引用本文复制引用
李龙飞,张阳,林腾昌,牛澄洲,周晓舟..电渣重熔冶炼贝氏体辙叉钢渣系设计研究[J].铸造技术,2025,46(11):1119-1124,6.基金项目
中央企业自主投入研发专项重点基金(事23160380Z) （事23160380Z）
国家重点研发计划(2023YFB3710203) （2023YFB3710203）
