活塞第一环槽的磨损不仅决定活塞的工作寿命,而且决定整台柴油机的使用寿命。虽然根据其参数情况,活塞使用时间还可能多1～2倍,但大多数活塞是由于磨损而损坏。 众所周知,环—槽组合是在大的循环压力(6～14MPa)和高温(220～280℃)条件下工作。无论是活塞环以较小的冲击能量对环槽壁的冲击作用,还是活塞环在有磨料的腐蚀介质中相对环槽作径向往复移动时的磨损,均会使接触表面发生破坏。图1示出了 The wear of the first ring groove of the piston not only determines the working life of the piston, but also determines the service life of the entire diesel engine. Although piston life may be 1 to 2 times longer depending on its parameters, most pistons are damaged by wear. As we all know, ring - groove combination is under the conditions of large circulating pressure (6 ~ 14MPa) and high temperature (220 ~ 280 ℃). Either the impact of the piston ring on the annular groove wall with less impact energy or the wear of the piston ring in radial reciprocating motion relative to the annular groove in the abrasive corrosive medium will cause the contact surface to be destroyed. Figure 1 shows