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一、前言汽车发动机性能的提高、燃料消耗的降低及不需保养等是近年来的重大课题。寻求一般用铸铁制造的凸轮轴耐磨性的增加和减轻重量是其中的一环。解决途径之一是研制采用烧结合金的凸轮以增加耐磨性、轴部采用钢管以减轻重量并通过烧结使两者连接成
I. INTRODUCTION The improvement of automobile engine performance, the reduction of fuel consumption and maintenance-free are major issues in recent years. Seeking the general use of cast iron camshaft wear resistance increases and reduce weight is one of the rings. One of the solutions is to develop a cam using a sintered alloy to increase the wear resistance, the shaft portion to use a steel pipe to reduce the weight and to connect both by sintering