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内燃机的耐久性、可靠性及其效率在很大程度上取决于气缸套和活塞环工作表面的质量。除了占40％～60％机械零件的摩擦损失外,内燃机工作时,在缸套-活塞环接触中还发生高温条件下燃油、滑油特性的复杂物理-化学过程。在发动机开始工作时,由于缸套表面质量不佳,镀铬压缩环会产生划痕。这会导致在活塞环表面产生碳化铬。由于具有脆性碳化铬容易被砸掉,于是便在气缸内壁像磨料那样工作。因而导致缸套磨损加剧,发动机的使用寿命缩短,效率降低。所以,所要求的缸套-活塞环副的摩擦技术特性的工艺保证是现代发动机制造业的一项迫切任务。
The durability, reliability and efficiency of the internal combustion engine depend to a large extent on the quality of the working surfaces of the cylinder liner and piston ring. In addition to 40% to 60% of mechanical parts of the friction loss, the internal combustion engine work, the cylinder liner - piston ring contact also occurred under high temperature fuel oil, lubricating oil complex characteristics of the complex physical - chemical process. The chrome-plated compression ring scratches as the engine starts to work, due to the poor quality of the cylinder liner surface. This can lead to chromium carbides on the piston ring surface. As a result of brittle chromium carbide easily smashed, so they work in the cylinder wall like abrasive. As a result, the wear of the cylinder liner is aggravated, the service life of the engine is shortened and the efficiency is reduced. Therefore, the required process assurance of the frictional technical characteristics of the cylinder liner-piston ring pair is an urgent task for the modern engine industry.