W-Mo-Cr合金对金刚石砂轮磨块的摩擦化学修整

为解决粗磨粒金刚石砂轮磨块的修整问题，使用W-Mo-Cr合金材料作为修整工具对磨粒粒度尺寸为297~420μm的金刚石砂轮磨块进行修整，修整前后分别测量砂轮表面磨粒的等高性和磨粒的微观形貌，并且分别用修整前后的砂轮磨块进行WC硬质合金的磨削试验。结果表明:W-Mo-Cr合金材料对金刚石砂轮修整效率高，修整后砂轮表面磨粒的等高性提升了60%左右。利用修整后的金刚石砂轮磨削WC硬质合金，工件表面质量得到很大的改善，表面粗糙度达到R_a0.149μm。 

Dynamic friction dressing of the diamond abrasive brick by W-Mo-Cr alloy

In order to solve the problem of dressing course-diamond abrasives, dressing experiments on diamond abrasive bricks with abrasive size 297μm to 420μm were conducted with W-Mo-Cr alloy as dressing material.The abrasive height consistency and the micrographs of the abrasive were measured before and after dressing.Then grinding experiments on WC material were conducted separately.Resultsindicate that the dressing method has high dressing efficiency and the abrasive height consistency of the diamond wheel has been greatly improved by 60%.The surface quality of WC material is evidently improved after dressing and the surface roughness of WC material reaches R_a0.149μm.