为研究不同滑板材料40CrNiMo、H13钢的耐磨性能,利用立式万能摩擦磨损试验机,将SiC硬质球做摩擦副试验材料进行干摩擦试验,磨损后表面形貌通过扫描电子显微镜进行分析.结果显示:H13材料明显比40CrNiMo耐磨性好;磨损形式主要表现为金属的塑性流动变形和剥层磨损.对于40CrNiMo组织中残余奥氏体强度、硬度低,塑性变形能力好,局部严重塑性变形导致在摩擦路径边缘产生金属挤出现象;摩擦过程中转变为脆性组织导致磨损失重增加.对于H13钢,合金元素含量高,热处理后碳化物弥散分布,残余奥氏体含量低,显著改善了钢的耐磨性能. In order to study the wear resistance of 40CrNiMo and H13 steel with different skateboard materials, the dry universal friction test of SiC hard balls was made by using the universal universal friction and wear testing machine. The surface morphology after wear was analyzed by scanning electron microscopy. The results show that the wear resistance of H13 material is better than that of 40CrNiMo, and the wear forms are mainly plastic flow deformation and delamination wear. The residual austenite in 40CrNiMo shows low hardness, good plastic deformation and severe local plastic deformation Resulting in the phenomenon of metal extrusion at the edge of the friction path; during the process of friction, the brittle structure turns into brittle structure, which leads to the increase of wear loss.For H13 steel, the content of alloying elements is high, the carbide distribution and the retained austenite content after heat treatment are low, Wear resistance.