由于铸铁的物创特性和成本低等因素,多年来铸铁被认为是最佳的气缸套材料。但是当今发动机市场一直在给发动机制造厂家施加压力,要求发动机在不增大外形尺寸的前提下增加输出功率。达到这一目的的有效措施之一是增加气缸直径,即增大气缸套内径。但如果发动机外形尺寸不变,要增大气缸套直径会受到铸铁材料性能的很大限制。采用适当的涂层保护的钢质材料,是解决这一问题的一个途径。用钢取代铸铁,气 Cast iron is considered to be the best material for cylinder liners over the years due to its material-creating properties and low costs. However, the engine market today has been putting pressure on the engine manufacturers to require the engine to increase output without increasing the overall size. One of the effective measures to achieve this goal is to increase the cylinder diameter, that is to increase the cylinder liner inner diameter. However, if the engine dimensions remain the same, increasing the diameter of the liner will be severely limited by the performance of the cast iron material. Using properly coated steel materials is one way to solve this problem. Steel instead of cast iron, gas