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沙漠车用发动机采用陶瓷涂层活塞环，以提高在高温和高密度尘砂恶劣工作条件下的耐磨性。图1所示的陶瓷徐层活塞环具有中凸的工作型面，如沿用普通磷铸铁活塞环的加工方法，使用修成凹型面的氧化铝砂轮作成形磨削，由于氧化铝砂轮磨削陶瓷表面损耗很大，砂轮凹面形状保持性很差
Desert car engine with ceramic coated piston rings to improve wear resistance under harsh operating conditions of high temperature and high density dust sand. Figure 1 shows the ceramic Xu layer piston ring has a convex working surface, such as the use of ordinary phosphorus cast iron piston ring processing method, the use of concave into the concave surface of the alumina grinding wheel for forming grinding, as the alumina grinding wheel grinding ceramic surface Large loss, wheel concave shape retention is poor