STEEL BASE SINTERING ALLOY HAVING HIGH WEAR-RESISTANCE FOR VALVE SEAT OF ENGINE AND MANUFACTURING METHOD THEREOF, AND VALVE SEAT OF ENGINE

摘要

PURPOSE: A steel base sintering alloy having high wear-resistance for valve seat of engine, a manufacturing method thereof and a valve seat of engine are provided to maximumly reduce the abrasion of product by having a good wear resistance and improve the self-wear resistance. CONSTITUTION: A steel base sintering alloy having high wear-resistance for valve seat of engine and a valve seat of engine comprise the iron is a main component. The carbon 0.6~1.2wt%, nickel 1.0~3.0wt%, cobalt 15.0~25.0wt%, chrome 3.0~9.0wt%, molybdenum 8.0~15.0wt%, tungsten 1.0~4.0wt%, manganese 0.5~2.0wt%, calcium 0.1~0.5wt%. The base tissue is mixed with chrome 0.8~1.2wt%, molybdenum 0.4~0.6wt%, manganese 0.5~0.9wt%, carbon 1.0~1.4wt% and remnant is mixed with the alloy portion, carbon 0.2~0.3wt%, nickel 1.0~3.0wt%, cobalt 1.0~3.0wt% this consisting of the iron.