前言十几年来,镇静钢锭浇注帽口的 V 形增碳(帽口纵断面经腐蚀和分析显现的 V 形碳偏析区,钢坯、材横断面则呈现所谓“黑心”)取代了缩孔,成为不少钢厂普遍关注的重大质量问题。它的存生,不仅极大地限制了钢锭成材率的提高,而且直接影响了出厂钢材的使用质量。为此,许多钢厂以及研究机关、高等院校,一直都在研究探讨,采 Preface For more than a decade, V-shaped carbonation of the seated steel ingot hatches (the V-shaped carbon segregation zone that appears as a result of corrosion and analysis on the longitudinal profile of the hat section), the billet and the cross-section of the material present the so-called “black heart” Many steel mills generally concerned about the major quality issues. Its survival, not only greatly limits the ingot rate of increase, but also directly affects the quality of the use of steel factory. To this end, many mills and research institutes and institutions of higher learning have been studying and adopting mining methods