ALUMINIUM ALLOY AND MANUFACTURING METHOD FOR CYLINDER LINER OF VEHICLE

摘要

PURPOSE: An aluminum alloy for a vehicle cylinder liner and a manufacturing method thereof are provided to improve the oil storage performance and abrasion resistance of a cylinder liner since silicon is minutely spread on the base material. CONSTITUTION: An aluminum alloy for a vehicle cylinder liner comprises silicon 16~22 weight%, copper 2~6 weight%, magnesium 0.2~2.0 weight%, iron maximum 1 weight%, manganese, zinc maximum 0.1 weight%, and nickel maximum 0.1 weight%. A manufacturing method of a vehicle cylinder liner comprises following steps. The temperature of melted alloy liquid(100) is maintained at 700~800°C in an insulation furnace(110). Phosphorus 50~500ppm is put into the melted alloy liquid, and then the melted alloy liquid is stabilized for 30-60 minutes. A round rod-shaped liner is made through a hot forging process.