一种新型的耐磨材料稀土中锰球墨铸铁磨球于1987年4月底在河南省郑州通过省级新产品鉴定,现已投入批量生产。这种磨球是由河南省建材厂和省冶金研究所合作经过近一年的努力研制成功的。过去水泥厂家使用的普碳钢锻球抗磨性能 A new type of rare earth wear-resistant materials, manganese nodular cast iron ball in the end of April 1987 in Zhengzhou, Henan Province, through the provincial-level new product identification, has now been put into mass production. This grinding ball by the Henan Provincial Building Materials Factory and the Institute of Metallurgy after nearly a year of hard work developed. Anti-wear performance of carbon steel forged ball used by cement manufacturers in the past