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    • 4. 发明申请
    • COMBINATION OF A CYLINDER LINER AND A PISTON RING
    • 气缸内衬和活塞环的组合
    • US20080053396A1
    • 2008-03-06
    • US11847442
    • 2007-08-30
    • Iwao HIRAISHIKatsuaki OgawaHiromi IshikawaTsugane HiraseKazuhiro Sameshima
    • Iwao HIRAISHIKatsuaki OgawaHiromi IshikawaTsugane HiraseKazuhiro Sameshima
    • F02F1/00
    • F16J9/00
    • The disclosed is a combination of a cylinder liner and a piston ring which contacts to a inner circumference surface of the cylinder liner at the pressure of 0.03 to 0.2 MPa, wherein the composition of the cylinder liner includes, silicon: 23.0 to 28.0% by weight, magnesium: 0.80 to 2.0% by weight, copper: 3.0 to 4.5% by weight, iron: 0.25% by weight or less, nickel: 0.01% by weight or less, and the rest: unavoidable impurities and aluminum, and wherein surface roughness profile of the inner circumference surface has Rz 0.5 to 1.0 μm, Rk=0.2 to 0.4 μm, Rpk=0.05 to 0.1 μm, Rvk=0.08 to 0.2 μm, meanwhile, wherein the composition of a piston ring includes carbon: 0.6 to 0.7% by weight, chrome: 13 to 14% by weight, molybdenum: 0.2 to 0.4% by weight, silicon: 0.25 to 0.50% by weight, manganese: 0.2 to 0.5% by weight, and the rest: unavoidable impurities and iron, and wherein carbides with the diameter of 5.0 μm and less are contained at the area rate of 4 to 10%, and the surface roughness of an outer circumference sliding surface is Rz=0.8 μm or less, and RPk=0.15 μm or less.
    • 所公开的是气缸套和活塞环的组合,其在0.03至0.2MPa的压力下与气缸套的内周表面接触,其中气缸套的组成包括硅:23.0至28.0重量% ,镁:0.80〜2.0重量%,铜:3.0〜4.5重量%,铁:0.25重量%以下,镍:0.01重量%以下,其余为不可避免的杂质和铝,表面粗糙度 内周面的轮廓Rz为0.5〜1.0μm,Rk = 0.2〜0.4μm,Rpk = 0.05〜0.1μm,Rvk = 0.08〜0.2μm,其中活塞环的组成为碳:0.6〜0.7% 的铬:13〜14重量%,钼:0.2〜0.4重量%,硅:0.25〜0.50重量%,锰:0.2〜0.5重量%,其余:不可避免的杂质和铁,其中 直径5.0μm以下的碳化物的面积率为4〜10%,表面粗糙 外圆滑动面的β为Rz =0.8μm以下,RPk =0.15μm以下。