不同镀覆工艺金刚石磨料对树脂砂轮磨削性能的影响

Influence of diamonds with different plating parameters on grinding performance of resin bond grinding wheel

在不同条件下镀覆金刚石并以其为磨料制备树脂砂轮,研究镀覆工艺及条件对镀覆金刚石性能的影响,并检测砂轮的平行度、硬度、耐磨性。实验结果表明:以镀覆金刚石为磨料制备的砂轮,与用未镀覆金刚石的砂轮相比,磨损程度最大可降低45.31%。在电镀镍工艺和镀层增重率相近时,用经过真空蒸发镀钛的镀覆磨料制备的砂轮耐磨性更好,磨损程度降低29.77%;使用高电流短时间的电镀工艺制备的镀覆金刚石作为磨料制备的砂轮,其磨损程度下降29.43%。镀层增重率影响镀覆金刚石表面镍刺的生长状态,用镀层增重率过大的镀覆金刚制备的砂轮耐磨性降低。砂轮的平行度、硬度受砂轮磨料镀覆工艺的影响很小。

Different plated-diamonds made at different plating conditions were used as abrasives to fabricate resin grinding wheels to study the effect of plating technology and conditions on the performance of plateddiamond. The parallel, hardness and resistance of grinding wheels were detected as well. The results demonstrate that： the performance of grinding wheels is significantly improved when using plated diamond as abrasives,with the wear degree of grinding wheels remarkably reduced by 45. 31%. When the electroplating process and weight-gaining rate are both similar,the abrasive resistance of grinding wheels that using grinding material made by vacuum evaporation of titanium coating process is better,demonstrated by the abrasion degree of grinding wheel cut down with 29. 77%; the abrasive resistance of grinding wheels whose grinding material is plated-diamonds under high current and short time plating technology is better,the data illustrated a notable reduction by 29. 43% in the abrasion degree of grinding wheels. The coating weight gain rate affects the growth status of Ni splinter coated on diamond surface,and the abrasive resistance of grinding wheels will decrease if the coating weight of plated diamond increases too fast.