钢轨材料高速进给干磨砂轮性能研究

钢轨修磨是修复钢轨损伤的主要方式。相比于普通磨削，钢轨修磨对砂轮的磨削加工性能提出了特殊的要求。依据钢轨铣磨车作业工况，设定磨削参数，对不同砂轮进行试验研究，优选符合作业要求的砂轮。试验结果表明:树脂结合剂混合刚玉磨料砂轮耐磨性较好，砂轮的表面有轻微黏附型堵塞；陶瓷结合剂白刚玉大气孔砂轮的磨削效率和耐磨性综合性能较好，砂轮的表面有轻微黏附型堵塞；陶瓷结合剂微晶刚玉砂轮的自锐性好，干磨削效率高，但耐用度极低。 

Study on the wheel performance in high feed rate dry grinding rail material

Rail grinding is the main technology to maintain the rail.Compared with normal grinding,rail grinding requires special performance on the grinding wheel.Based on the working condition of rail grinding vehicle,we set a group of parameters and test different grinding wheels to select one to meet the requirements.Research results show that resin bond mixed corundum wheel has good durability and slight adhesions on the wheel surface;high porosity vitrified bond corundum wheel has good comprehensive performance of efficiency and durability;vitrified bond microcrystalline corundum wheel has good self-sharpening performance,high efficiency but poor wear resistance.