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制定了在电渣重熔时截取过渡过程金属熔滴的方法。研究了滾珠鋼电渣重熔过程中熔滴形成、通过渣层过渡、处于金属熔池等三个阶段鋼中氧化物夹杂的变化以及工作电压对重熔钢氧化物夹杂評級的影响,結果表明:电渣重熔过程中,氧化物夹杂的大量去除主要是由于强烈的渣鋼作用而非夹杂在金属熔池內的浮升;在一定范围內,提高工作电压导致重熔鋼氧化物夹杂評級降低。另外,作者根据重熔前后夹杂尺寸、成分及数量的显著变化,指出:在一定条件下,自耗电极中原始夹杂可基本去除,重熔鋼中的氧化物夹杂主要是金属熔池冷却結晶过程中新生成的。金属氧化程度及結晶条件对重熔钢純洁度具有决定性作用。
A method of intercepting the metal drop during the transition is established. The effects of droplet formation, slag layer transition, the inclusions of oxides in steel in three stages of molten metal pool and the working voltage on the inclusions in the remelted steel were studied. The results show that : ESR remelting process, a large number of oxide inclusions removed mainly due to the role of a strong slag instead of inclusion in the molten metal pool floating; within a certain range, increasing the operating voltage lead to re-melting oxide inclusions rating reduce. In addition, according to the remarkable changes of inclusions size, composition and quantity before and after remelting, the author points out that under certain conditions, the primary inclusions in consumable electrode can be basically removed, and the inclusions in the remelted steel mainly consist of metal pool cooling crystallization Newly generated during the process. The degree of metal oxidation and the crystallization conditions have a decisive effect on the purity of remelted steel.