用钇基重稀土镁复合球化剂生产的铬钼无限冷硬(铬钼半冷硬)球墨铸铁轧辊,在上辊颈(上梅花头)取样分析,抗拉强度及冲击值、球化级别,均比轻稀土镁球化剂(或纯镁球化剂)生产的铬钼无限冷硬球墨铸铁轧辊好。从1993年9月开始试产到1995年底已生产近1000吨轧辊,经我(集团)公司中型轧钢厂两年使用结果表明,轧辊质量稳定。 Chromium-molybdenum infinity chromate chrome-molybdenum semi-chilled ductile iron roll produced with yttrium-based heavy rare earth magnesium composite nodulizer was sampled and analyzed on the upper roll neck (upper plum head), tensile strength and impact value, spheroidizing grade , Are better than the light rare earth magnesium nodulizer (or pure nodulizer) produced chrome molybdenum unlimited chilled ductile iron roll good. Trial production started in September 1993 and nearly 1,000 tons of rolls were produced by the end of 1995. The results of two years of use by the mid-sized rolling mill of our (Group) Co., Ltd. show that the quality of the rolls is stable.