为了用高强度铸铁代替45~#锻钢(化学成分%和组织特征列于表中)凸轮轴,用СМЦ-2机器和试验台架装置,在与青铜配合作滑动摩擦的条件下,对高强度铸铁试样的耐磨性进行了研究(图1,代号见表)。由图可见,各条曲图线的特征是:在磨合期都有强烈磨损部分,在稳定磨损期曲线几乎平行于横坐标轴的部分。45~#钢与高强度铸铁的耐磨 In order to replace the camshafts of 45 to # forged steels (% chemical composition and texture characteristics are listed in the table) with high-strength cast iron, using the СМЦ-2 machine and the test bench apparatus, with sliding friction with bronze, The strength of cast iron samples were studied (Figure 1, code table). It can be seen from the figure that the characteristics of each curve are that there is a strong wear part during the running-in period, and the curve is almost parallel to the part of the abscissa axis during the steady wear period. 45 ~ # steel and high-strength cast iron wear