关键词: 表面质量, 磨削, 预应力

Abstract: The biggest problem in grinding is the generation of residual tensile stresses after the grinding operation which reduces the fatigue resistance of the component. By applying pre-tensile stress to the workplace during grinding, it is found that the residual stressed produced after grinding re compressive rather than tensile, Experiments with different grinding conditions and wheel conditions all confirm the fact that pre-tensile stressed workplaces produce residual compressive stresses irrespective of grinding, conditions. For a workpiece subject to a pre-compressive stress, however, the residual stress produced is tensile in nature, of which the magnitude is bigger than that obtained in un-stressed workpieces. The pre-compressive stressing of workpieces should therefore be avoided in grinding operations.

Key words: 表面质量, 磨削, 预应力