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1 前言为提高生铁外观质量,增强产品的市场竞争能力,针对我厂原有铸铁工艺存在的质量问题,我们进行了技术攻关和研究,通过改进铸铁模和铸造工艺,使生铁外观质量得到
1 Preface In order to improve the appearance quality of pig iron and enhance the market competitiveness of our products, we conducted technical research and research on the quality problems existing in our original cast iron process. Through the improvement of cast iron mold and casting process, the quality of pig iron appearance