25CrMnSi和22SiMn2低合金钢摩擦磨损性能研究

Study on Friction and Wear Properties of 25CrMnSi and 22SiMn2 Low Alloy Steel

25CrMnSi和22SiMn2是两种低合金耐磨钢,为了研究其耐磨性能,通过滑动磨损与冲击磨损试验,测试并分析了两种材料的磨损形貌和金相组织。结果表明,在滑动磨损条件下,25Cr MnSi的表层和心部均比22Si Mn2耐磨,但二者心部的耐磨性差异更大;而在冲击磨损条件下,25Cr MnSi的耐磨性相对较差;在两种磨损条件下,25Cr MnSi耐磨失重量差异不大,而22Si Mn2在滑动磨损条件下的失重量几乎是冲击磨损的10倍,因而22Si Mn2较适合于冲击磨损情况下使用。

25CrMnSi and 22SiMn2 are two kinds of low alloy wear-resistant steels. In order to study their wear-resistant properties, the wear morphology and microstructure of the two materials were tested and analyzed by sliding wear and impact wear tests. The results show that both the surface and the core of 25CrMnSi are more wear-resistant than 22SiMn2 under the sliding wear condition, but the wear resistance of the core of 25CrMnSi is more different than that of 22SiMn2.Under the condition of impact wear, the wear resistance of 25CrMnSi is relatively poor. Under the two wear conditions, the weight loss of 25CrMnSi is not significantly different, while that of 22SiMn2 under sliding wear conditions is almost 10 times that of impact wear, so 22SiMn2 is more suitable for impact wear conditions.