随着我国内燃机工业的迅速发展,使用单位对发动机要求尽可能的延长大修期和使用寿命,关键就在于提高发动机基础另件和主要零件的使用寿命。发动机气缸套、活塞及活塞环是发动机上的主要另件。而在这三个另件中,气缸套的磨损是主要的,一台发动机是否有必要进行修理,首先是根据气缸套的磨损程度来决定的,所以气缸套的耐久性和可靠性问题是试验用发动机使用寿命的主要指标,也关 With the rapid development of China’s internal combustion engine industry, the use of units to extend the overhaul period and service life of the engine as much as possible, the key is to improve the life of the engine parts and other parts. The engine cylinder liner, piston and piston ring are the main components on the engine. In these three parts, the wear of the cylinder liner is the main one. Whether an engine needs to be repaired is first determined by the wear degree of the cylinder liner. Therefore, the durability and reliability of the cylinder liner are tested With the main indicators of engine life, but also off