Abstract：The composition of electroslag remelting （ESR） slag system is directly related to smelting quality and surface quality of high temperature alloy. This study analyzed basic requirements and composition characteristics of ESR slag system for high temperature alloy. Basic types of ESR slag system for high temperature alloy were determined. Through the research on the influences of ESR slag system for high temperature alloy on metallurgical quality， it can be known that slag system with high alkalinity is beneficial to desulfurization. In order to reduce unstable oxide， fluorite should be purified before using. Changing slag system composition and adding aluminum powder can reduce the burning of Al， Ti and other active elements. The application of slag system with low melting point can reduce or avoid surface slag runners， waist defects and shunt holes in the ESR process for high temperature alloy with Ti. The slag system composition proposed in this article for high temperature alloy with high Ti content and low Al content is that[CaF2]65%～70%、[A12O3]12%-15%、[CaO]12%-15%、[MgO]3%-8%、[TiO2]2%-5%. The slag system composition proposed in this article for high temperature alloy with low Ti content and high Al content is that[CaF2]60%-65%、[A12O3]15%-20%、[CaO]15%-20%、[MgO]0%-5%、[TiO2]0%-2%.
李 星，耿 鑫，姜周华，李花兵，徐芳泓，王立新. 电渣重熔高温合金渣系对冶金质量的影响[J]. 钢铁, 2015, 50(9): 41-46.
LI Xing，GENG Xin，JIANG Zhou-hua，LI Hua-bing，XU Fang-hong，WANG Li-xin. Influences of slag system on metallurgical quality for high temperature alloy by electroslag remelting. Iron and Steel, 2015, 50(9): 41-46.
2015, Vol. 50 
