氧化铝增韧陶瓷的高效ELID精密磨削实验研究

High efficiency ELID precision grinding of Al_2O_3 toughened ceramics

氧化物增韧陶瓷是一种高技术陶瓷材料，具有高强度、高韧性以及良好的耐磨、耐腐蚀性能。在一般的加工过程中，采用普通树脂砂轮对硬度较高的氧化铝增韧陶瓷材料进行磨削时，磨料的消耗比较快，磨削比较低，仅为8，10左右。通过ELID磨削对氧化铝陶瓷进行高效磨削实验，从砂轮速度、进给速度、砂轮粒度和砂轮电解活化钝化趋势等因素中，找到合适的加工工艺参数，使效率和精度达到最优。实验表明，砂轮速度和进给速度对磨削比影响较大；砂轮粒度和砂轮电解活化钝化趋势对表面质量影响较多。使用优化后的ELID磨削工艺使氧化铝陶瓷材料的加工效率提高了50％。磨削比增大到60～100。

Oxide toughened ceramics is a high technology ceramic material, which has high strength, high toughness, and high wear and corrosion resistance. The resin bond diamond grinding wheel is widely used in machining Al2O3 ceramic, but the grinding ratio of this kind of grinding wheel is very low , only about 8 to 10. Through analyzing the electrolytic in - process dress （ELID） grinding experiment data, some laws about the effect of different parameters such as wheel speed, feed rate, grain size and electrolytic current on surface roughness are found and the optimizing parameters combination to improve the efficiency is obtained. According to the experiment data, wheel speed and feed rate mostly affects the grinding ratio, while the grain size and electrolytic current affects the surface roughness. By using the optimizing parameters combination, the grinding efficiency improved by 50%, and the grinding ratio augmented to 60～ 100.