通过中频炉调整和配制高铬磨球合金成分,采用炉前稀土硅铁变质处理,磨球的冲击韧性可得到明显的改善,再经高温(960℃油淬)调质处理后,磨球韧性和耐磨性显著提高.实践表明,该种磨球单耗低(约58g/t煤),破碎率＜0.5%,使用寿命是低铬磨球的2.3倍.%Impact toughness of grinding ball could be obviously improved with MF furnace adjusting and preparation of high Cr grinding ball alloy and modification with RE ferrosilicon. High temperature adjustment of oil quench at 960℃ can obviously increase both toughness and wear-resistance of grinding balls which have been proved in practice to be with lower energy consumption ( 58g per ton coal ) and break rate ＜0.5％ while service life 2.3 times more than that of lower Cr ones.
展开▼
