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根据兴澄钢铁公司生产初期出现的合金钢180 mm方和300 mm方连铸坯表面缺陷攻关研究情况，分析了合金钢大方坯容易产生表面缺陷的主要原因，提出防止产生表面缺陷的主要工艺措施。
According to the researches on surface defects of 180 mm square and 300 mm square continuous casting slabs appearing in the initial stage of the production of Xingcheng Iron and Steel Company, the main causes for surface defects of alloy steel bloom are analyzed and the main technical measures to prevent surface defects are proposed.