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为了改善内燃机活塞的磨合性能和排除它们的卡滞现象,常常应用各种不同组份和各种形式的磨合抗磨涂层。其中最为广泛使用的是镀锡和涂石墨,且涂石墨不仅比较经挤而且整个过程清洁卫生,因而更具优越性。在世界发动机制造业中,主要采用以醇溶酚树脂为基的石墨化处理法(西德“马勒”公司研制)。但这种涂层成形工艺的主要缺点是:必须用乙醇作为溶剂对活塞筒体表面作预先磷化处理。此外,这种涂层仅仅是一种磨合徐层。因为实际上经过50～100h工作之后,在活塞筒部与缸套接触区的涂层就剥落了。
In order to improve the running-in behavior of the pistons of the internal combustion engine and to eliminate their jamming, a wide variety of different compositions and various forms of wear-resistant abrasion-resistant coatings are often used. One of the most widely used is tin and graphite coating, and coated graphite is not only more crowded but also the whole process of cleaning and hygiene, and therefore more advantages. In the world of engine manufacturing, the main use of alcohol-based phenolic resin based graphitization (West Germany “MAHLE” company). However, the main disadvantage of this coating forming process is that the surface of the piston barrel must be pre-phosphated with ethanol as a solvent. In addition, this coating is only a kind of run-in Xu layer. Because in fact after 50 ~ 100h work, in the piston cylinder and cylinder liner contact area of the peeled off.