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前言 发展高速磨削可以显著地提高磨削效率,延长砂轮寿命,改善加工表面光洁度。但是人们耽心提高砂轮速度后会引起加工表面出现烧伤和裂纹,影响工件的表面质量和使用性能,这是进一步发展、应用高速磨削新工艺的顾虑。 磨削加工时金属表面热损伤的现象是由磨削表面的温度场特征所决定的。磨削过程是在比一般车、铣高10～20倍以上的速度下进行的,磨粒切入工件时,表层金属产生很大的变形和摩擦,消耗的能量使金属表层形成瞬时的热聚集,磨削区的加热速度极快,局部温度很高,
Preface The development of high-speed grinding can significantly improve the grinding efficiency, extend wheel life and improve the surface finish. However, people are worried that increasing the speed of the grinding wheel will cause burns and cracks on the machined surface, affecting the surface quality and serviceability of the workpiece. This is a further development and application of the new high-speed grinding process. The phenomenon of thermal damage to the metal surface during grinding is determined by the temperature field characteristics of the grinding surface. Grinding process is more than the average car, milling 10 to 20 times higher speed, the abrasive into the workpiece, the surface of the metal has a great deformation and friction, the energy consumption of the metal surface to form a transient heat accumulation, Grinding area heating very fast, local temperature is high,