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设计了结晶器可旋转的电渣炉,并研究了不同的结晶器旋转速度对电渣钢锭中氧化铝夹杂物去除的能力。结果表明,当结晶器旋转速度为0~28 r/min时,随着结晶器旋转速率的增加,电渣钢锭中的氧化铝夹杂尺寸逐渐变小。其主要原因是结晶器的旋转促进了金属液滴尺寸的细化,扩大了金属液滴与渣池的接触面积,改善了渣-钢反应的动力学条件;同时渣池的运动也会带动金属液滴在渣池的运动,使金属液滴在渣池中运动路线更长,停留时间更长,能充分与熔渣反应,动力学条件更好。但是当结晶器旋转速度进一步增加至35 r/min,夹杂物的尺寸反而进一步增加,主要原因是过高的运动速度导致金属液滴及金属熔池的激烈运动,反而将熔渣带入钢液中,降低电渣重熔的精炼能力。
A mold-rotatable electroslag furnace was designed and the ability of different mold rotation rates to remove alumina inclusions in the electroslag ingot was studied. The results show that when the mold rotation speed is 0 ~ 28 r / min, the size of inclusions in the ingot steel ingot becomes smaller with the increasing of the mold rotation rate. The main reason is that the rotation of the mold promotes the refinement of the size of the metal droplets, enlarges the contact area between the metal droplets and the slag pool, and improves the kinetic conditions of the slag-steel reaction. At the same time, the movement of the slag pool drives the metal The movement of the droplets in the slag pool makes the movement of the metal droplets in the slag pool longer and the residence time longer, which can fully react with the slag with better kinetic conditions. However, when the mold rotation speed is further increased to 35 r / min, the size of inclusions will increase further. The main reason is that too high moving speed leads to intense movement of metal droplets and molten metal pool, In order to reduce the refining capacity of ESR.