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由于使用助沸剂,钢锭的坚壳带厚度增加了1—1.5倍,蜂窝气泡带的高度降低到500～800毫米,从而使有可能加速沸腾钢大钢锭的浇注。在马钢,由于铸锭工段铸锭能力不够,限制了平炉生产率的提高。为了消除这种不相适应的状况,必须提高铸速1～2倍。然而用大直径(50～100毫米)水口浇铸沸腾钢是有困难的,因为快速浇注沸腾钢时,钢锭坚壳带厚度急剧下降,从而在轧制过程中因表面缺陷而
Due to the use of a boil-up agent, the thickness of the solid shell of the ingot is increased by 1-1.5 times and the height of the honeycomb bubble band is reduced to 500-800 mm, making it possible to accelerate the pouring of the ingot of the ebullated steel. In Masteel, due to ingot ingot ingot capacity is not enough, limiting the improvement of open hearth productivity. In order to eliminate this incompatible situation, we must increase the casting speed of 1 to 2 times. However, it is difficult to cast a boiled steel with a large diameter (50 to 100 mm) nozzle since the thickness of the solidified hard steel ingot decreases sharply during the rapid pouring of the boiled steel so that due to the surface defects in the rolling process