用于柴油打桩锤上下活塞上的活塞环与普通内燃机用的活塞环一样,起着密封、导热、导向和调节润滑油的作用。所不同的是:柴油打桩锤上的活塞环润滑条件较差,易磨损,承受着较大的冲击负荷,工作条件恶劣。普通内燃机上广泛采用的是合金铸铁活塞环,这种材料的活塞环是否适用于柴油打桩锤呢?实践证明,合金铸铁活塞环用于柴油打桩锤中是不够理想的,不仅寿命短,易拉毛缸体,至使打桩无力,有时还会出现活塞环折断,造成事故。所以,选择理想的活塞环材料已成为柴油打桩机生产厂和用户 The piston rings used on the upper and lower pistons of the diesel hammers act like a piston ring for an internal combustion engine, functioning as a seal, a heat conduction, a guide and an adjustment of the lubricating oil. The difference is that the piston ring on the diesel pile hammer has poor lubrication conditions, is easy to wear, suffers from large shock loads, and has poor working conditions. Alloy cast iron piston rings are widely used on ordinary internal combustion engines. Does the piston ring of this material apply to diesel pile hammers? Practice has proved that alloy cast iron piston rings are not ideal for diesel pile hammers. They not only have short life span, but are easy to pull. Cylinder, so that the piling can not afford, sometimes there will be piston rings broken, causing accidents. Therefore, choosing the ideal piston ring material has become a diesel pile driver manufacturer and user