结果表明：名义尺寸相同而实际尺寸相差较大的磨球所磨出的粉体粒度大且分布不均匀，烧结体硬质相颗粒粗大且等轴性差，抗弯强度和硬度均较低。
It is found that the grain size of the powders milled by balls with different diameters is big, the hard phase is big too and not uniform, the hardness and bending strength are also lower.
本文重点研究了碳化钨与粘结金属的配合比例、碳化物颗粒的粒度、粘结金属的组织成分及其硬度等因素对喷焊层耐磨性的影响，并初步得出某些因素对喷焊层耐磨性的影响规律。
The mixing proportion of WC and matrix metal, the grain size of WC, the composition and hardness of the matrix and other factors on wearability of the spray welding coating are discussed in the paper.
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