The results show that the plastic flow of the metal material nearby contact arc area towards free surface of workpiece becomes the burr under the coupling actions of the thermal and mechanics.

• 结果表明，在磨削淬硬加工中的热和机械复合作用下，磨削弧区附近金属向工件两侧无约束自由表面塑性流动形成了两侧方向毛刺；