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Mathematical model for design of optimized multi component slag for electroslag remelting

《钢铁研究学报:英文版》2020年 第4期 | Shi-jian Li Guo-guang Cheng Yu Huang Wei-xing Dai Zhi-qi Miao   State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 China
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摘 要:Slag is the heart of electroslag remelting(ESR)process.A new mathematical model to design the optimized slag for ESR was developed based on slag–metal equilibrium theory,ion and molecule coexistence theory and modified Butler’s equation.It was assumed that an overall thermodynamic equilibrium did exist at electrode tip–slag interface.With this model,the equilibrium slag and its surface tension could be obtained quantitatively when the initial compositions of consumable electrode were given.An industrial experiment with four types of slags was carried out in a special steel plant in China.The variation of Al,Si and Mn corresponded well with the deviation of corresponding oxide from equilibrium,reflecting the reasonability of the model.Besides that,the effects of Al in electrode as well as CaO,CaF2 and MgO in slag on the equilibrium slag,dissolved oxygen and surface tension were discussed in detail.
【分 类】【工业技术】 > 冶金工业 > 炼钢
【关键词】 Electroslag remelting Model Slag design Ion and molecule coexistence theory Equilibrium slag
【出 处】 《钢铁研究学报:英文版》2020年 第4期 380-391页 共12页
【收 录】 中文科技期刊数据库