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半冷硬球墨铸鉄軋輥是将鉄水用镁进行球化处理后,浇入衬砂冷型內制成。由于进行球化处理,使鑄铁內部石墨碳由片状变为球状,消除了由于片状石墨存在而引起的石墨尖端应力集中現象,使其强度显著提高,与铸鋼轧辊相接近,而其耐磨性則此鑄鋼軋輥高得多,接近冷铸轧辊。由于它具有上述优点,在軋钢生产上正被用来代替铸鋼和鍛鋼軋輥。 1955年我们学习了鞍鋼球墨軋輥試制成功之经驗后,在我厂馬上进行了試驗,并于同年12月获得成功,随后就开始正式投入生产。
Semi-chilled ductile iron casting 鉄 roll is the water after the ball with magnesium, poured into the gypsum cold made. Due to the ball treatment, the internal graphite carbon from flake to spherical, eliminating the flake graphite tip stress concentration caused by the presence of flake graphite, so that the strength was significantly increased, and the cast steel roll close, and its The wear resistance of this cast steel roll is much higher, close to the chilled roll. Because of its advantages, it is being used in the production of steel to replace cast steel and forged steel rolls. In 1955, after learning the successful trial of Ansteel nodular roll, we successfully conducted the test in our factory and succeeded in December of the same year, and then started to put into production formally.