The invention relates to a method for preparing a SiC particle-aluminum
alloy composite material cylinder liner, which can meet the requirement of light-weight manufacturing of engines. The method comprises the following steps of: preparing SiC particle-aluminum
alloy composite material slurry with
volume fraction of between 10 and 20 percent by a stirring
casting method; heating to the temperature of between 700 and 750 DEG C for later use; forming the SiC particle-aluminum
alloy composite material slurry which is heated to the temperature of between 700 and 750 DEG C and serves as a
raw material in a cylindrical mould which is preheated to the temperature of between 350 and 500 DEG C by a centrifugal
casting method under the condition that a G parameter is between 50 and 100g; cooling and solidifying to obtain a cylindrical cast, wherein the cast consists of a SiC particle-aluminum
alloy composite material annular belt which is distributed close to the external
diameter of the cylindrical cast and has an average
volume fraction of between 35 and 55 percent and an aluminum alloy annular belt which is distributed close to the internal
diameter of the cylindrical cast and does not have any SiC particles; removing the aluminum alloy annular belt part which is distributed close to the internal
diameter of the cylindrical cast and does not have the SiC particles by a
machining method to obtain a cylindrical member which is made of a high-size SiC particle-aluminum
alloy composite material; and mechanically turning and thermally
processing the high-size SiC particle-aluminum
alloy composite material cylindrical member and chemically corroding the inner wall of the cylinder liner to prepare a cylinder liner part. The SiC particle-aluminum alloy composite material cylinder liner prepared by the method has the characteristics of low
linear expansion coefficient,
high wear resistance and high thermal performance.