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纵裂纹是钢锭的主要缺陷之一，是浇注工作的重点和难点。尽管纵裂纹的形成机理至今还没有最后统一的定论，但在钢锭废品中占相当大的比例是众所周知的事实。在过去的生产中，马钢一直受圆钢锭纵裂纹的困扰，虽多年来一直在探索其解决的方法，但收效甚微。自从１９９８年９月开
Longitudinal cracks are one of the main defects of steel ingot, pouring work is the focus and difficulty. Although the mechanism of the formation of longitudinal cracks has so far not been conclusive, it is a well-known fact that a significant proportion of the steel ingot was produced. In the past production, Masteel has been troubled by the longitudinal crack of round ingot. Although it has been exploring its solution for many years, it has had little success. Opened since September 1998