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一、前言在国民经济调整期间,利用我国各钢厂现有生产条件,在不增加设备、保证钢的质量前提下,充分挖掘企业内部潜力,提高初轧成坯率,是钢铁企业当前增产节约、开辟财源、增加盈利的一种有效的途径。我厂于1974年开始在沸腾钢上小下大模型内衬上挂绝热板进行浇注镇静钢试验,推广后初轧成坯率提高3％左右。但由于钢锭产生二次缩孔,所以只能在少数钢种上推广应用,而大部分碳钢、合金钢以及军工钢等钢种尚不能推广采用,从而
I. Introduction During the period of national economic readjustment, the existing production conditions of all steel mills in our country are utilized to fully tap the internal potential of the enterprise and increase the billet blanking rate without increasing the equipment and ensuring the quality of the steel. , To open up financial resources and increase profitability as an effective way. I plant began in 1974 on the boiling steel on the next big model lined with insulation panels for casting static steel test, after the promotion of the initial bloom into blanks increased by about 3%. However, due to secondary shrinkage of steel ingot, it can only be applied in a few types of steel, and most of the carbon steel, alloy steel and steel, such as steel can not be promoted to use