CYLINDER LINER WITH HIGH STRENGTH AND WEAR RESISTANCE AND MANUFACTURING METHOD THEREOF

摘要

A cylinder liner with high strength and wear resistance and a manufacturing method thereof are provided. The composition of the cylinder liner is (wt%) as following: C 3.0-3.3%,Si 2.0-2.3%,P 0.3-0.6%,S<0.1%,Mn 0.3-0.6%,Mo 0.1-0.3%,Nb 0.08-0.15%,and the balance Fe. The buildup of the cylinder liner is phosphorus-containing acicular ferrite and carbon-rich austenite, wherein the phosphorus eutectic is no less than 3%. The cylinder liner with hardness of HRC 38-43, Rm>400MPa, high strength and good wear resistance, solves the problem of pearlite cylinder liner with low wear resistance and cast bainite with bad corrosion resistance.