CaF_2-Al_2O_3-CaO渣系电渣重熔过程形成的渣皮结构及成分  

Composition and Structure of Slag Shell during Electroslag Remelting Process with CaF_2-Al_2O_3-CaO Slag Series

作　　者：李永波[1] 赵俊学[1] 唐雯聃[1] 党艳梅[1] 仇圣桃[2] 崔雅茹[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,西安710055 [2]钢铁研究总院国家连铸中心,北京100081

出　　处：《特殊钢》2014年第4期28-30,共3页Special Steel

基　　金：国家自然科学资金资助(51174155)

摘　　要：分析了9.5 t热作模钢H13重熔锭在380 kg 60CaF_2-30Al_2O_3-10CaO三元渣的重熔过程中渣头和渣皮的结构和成分。结果表明,电渣锭生产过程的渣皮呈现明显的分层结构,自外侧向内,依次为急冷层、氧化铝析出层和内部返熔层;渣头中CaF_2含量普遍低于初渣值,而渣皮中CaF_2含量高于初渣值;铝氧化物在渣头外缘比重最高;重熔后渣的氧含量明显高于初渣。The structure and composition of slag shell and final slag during remelting process of 9. 5 t remelting ingot of hot working die steel H13 with 380 kg 60CaF2-30Al2O3-10CaO ternary slag system have been analyzed. Results show that during electroslag remehing process the slag shell presents obvious laminating-structure, from out-side to inner-side in proper order being rapid cooling layer, aluminium oxide precipitating layer and inner remehing layer; the CaF2 content in final slag is generally lower than that in initial slag and the CaF2 content in lag shell is higher than that in initial slag; the aluminium oxide content in outside of final slag is highest; and the oxygen content in remehed slag is obviously higher than that in original slag.

关 键 词：CaF2-Al2O3-CaO渣系电渣重熔(ESR)渣皮结构 

分 类 号：TF142[冶金工程—冶金物理化学]