研制了以微量Ｖ、Ｔｉ取代Ｍｏ、Ｃｕ等贵金属材料的高铬白口铸铁磨球，用稀土进行变质处理可以进一步提高磨球的韧性和耐磨性，在金矿石中磨耗小于０．７ｋｇ／ｔ，破碎率小于０．３％，无剥皮、变形等缺陷，磨损均匀。以铸后堆冷加回火代替传统的淬火加回火的热处理工艺，使生产成本大幅度下降。 The high-chromium white cast iron balls with noble metals such as Mo and Cu were developed with trace amounts of V and Ti. The modification of rare earth with the rare earth can further improve the toughness and wear resistance of the balls. The wear of gold balls is less than 0.7kg / t, broken less than 0.3%, no peeling, deformation and other defects, wear uniform. After the cast heap cold plus tempering instead of the traditional quenching and tempering heat treatment process, so that production costs dropped significantly.