导电结晶器电渣重熔中非金属夹杂物的去除

导电结晶器电渣重熔渣池局部发热密度最高值在电极角部和结晶器壁附近,电极端部下方仍存在"高温区",对非金属夹杂物去除提供热力学与动力学条件。电渣重熔过程中非金属夹杂物的去除主要发生在自耗电极端头熔滴形成阶段以及熔滴穿过熔渣层阶段。综合自耗电极端部熔化至熔滴形成过程阶段、熔滴滴落并穿过渣池至金属熔池阶段和金属熔池至铸锭凝固非金属夹杂物的上浮阶段的去除率,导电结晶器电渣重熔去除非金属夹杂物的能力不低于传统电渣重熔。

Removal of Non-Metallic Inclusions in Current-Conductive Mould ESR Process

Maximum local Joule heat generation density values of current-conductive mould ESR slag bath occur in the area which is close to the electrode corner and the slag/mould interface.＂High temperature zone＂ still is under the electrode.Removal of non-metallic inclusion during remelting occurred mainly in the first stage of consumable electrode forming molten drop and the second stage of molten drop passing through the slag bath.Analyzing removal ratio of non-metallic inclusions during the stage of forming molten drop,the stage of molten drop passing through the slag bath and the rising stage of non-metallic inclusion in molten metal bath,the ability of removal of non-metallic inclusion of current-conductive mould ESR is not lower than the traditional ESR.