一、喷丸强化原理喷丸强化过程就是将高速运动的弹丸流连续向金属零件表面喷射的过程,弹丸流的喷射如同无数小锤向金属表面锤击,使得金属表面层产生极为强烈的塑性形变,从而产生了冷作硬化层,此层称为表面强化层。从应力状态来看强化层内形成较高的残余压应力;从组织结构来看强化层内形成了更加细小的亚晶粒组织。 First, the principle of shot peening Shot peening process is the high-speed motion of the projectile stream to the continuous spraying of metal parts of the process, projectile flow jet as numerous hammer to the metal surface hammer, making the metal surface layer has a very strong plastic deformation , Resulting in cold hardening layer, this layer is called surface strengthening layer. From the stress point of view, there is a higher residual compressive stress in the strengthened layer. From the microstructure, more fine subgrain is formed in the strengthened layer.