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对电渣重熔过程中氧化物夹杂去除机理进行了探讨。试验结果指出,三氧化二铝夹杂能够有效地从金属液转入含30%Al_2O_3和7%SiO_2的CaF_2-Al_2O_3-SiO_2渣液内。渣钢界面上(SiO_2)对[Al]的氧化不导致钢中氧化物夹杂增加。大气中的氧对去除氧化物夹杂不利。作者认为界面能变化对电渣重熔过程中氧化物夹杂的行为具有重要的影响。渣钢作用去除氧化物夹杂的热力学条件应为: ΔF=(σ_(渣-夹杂)-σ(钢-夹杂))2πRh+σ_(钢-渣)πr~2<0 从界面能的观点出发,也许可以解释为什么当夹杂物团迁移到金属自由表面或耐火材料金属界面时会倾向保留于该处。
The removal mechanism of oxide inclusions in ESR process was discussed. The experimental results show that the inclusion of aluminum oxide can be effectively transferred from the molten metal into the CaF 2 -Al 2 O 3 -SiO 2 slag liquid containing 30% Al 2 O 3 and 7% SiO 2. Oxidation of [Al] on the slag interface (SiO 2) does not lead to an increase in oxide inclusions in the steel. Oxygen in the atmosphere is detrimental to oxide inclusions. The authors believe that the change of interface has an important influence on the behavior of oxide inclusions in ESR process. The thermodynamic conditions for slag inclusion to remove oxide inclusions should be: ΔF = (σ_ (slag-inclusion) -σ (steel-inclusion)) 2πRh + σ_ (steel- slag) πr ~ 2 <0 From the viewpoint of interfacial energy, It may be possible to explain why the inclusions tend to remain there as they migrate to metal free surfaces or refractory metal interfaces.