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过去,我厂电炉炼钢终脱氧是用加熔铸铝饼进行的。采用这种方法的缺点是:铝饼易漂浮,烧损大,同时还增加了一道熔铸铝饼的工序。最近我们用剁切铝块代替熔铸铝饼,收到了良好效果。具体做法是:先将铝锭剁切成2.5公斤左右的铝块,在出钢前将铝块扔在盛钢桶底部,使其在钢液中熔化,达到终脱氧的目的。由于这一改进,使成品钢中残铝值可保持在0.029
In the past, my factory electric furnace steelmaking final deoxidation is added with cast aluminum cake. The disadvantage of using this method is: aluminum cake easy to float, burning large, but also increased the process of casting aluminum cake. Recently, we used chopped aluminum instead of cast aluminum cake, received good results. The specific approach is: first chopped aluminum ingots into about 2.5 kilograms of aluminum block, aluminum block before tapping thrown at the bottom of the steel drum, making it melt in the molten steel to achieve the ultimate deoxygenation purposes. As a result of this improvement, the residual aluminum value in the finished steel can be kept at 0.029