Under different last impacting velocity,the stress and strain of the piston are analyzed. 风动冲击器活塞的冲击末速度决定了冲击器的工作性能。
The loading characteristics and destruction pattern of DTH hammer pistons are examined.On the basis of this,Some measures are put forward to prolong the Service life of the piston. 本文从分析潜孔冲击器活塞的载荷及破坏情况入手，介绍了一些提高活塞寿命的措施。
