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在自行设计的销-盘式摩擦磨损试验机上进行了不同法向载荷下不锈钢/浸金属碳载流摩擦磨损试验,分析了法向载荷对其摩擦磨损性能的影响,并用SEM观察了其磨损形貌。结果表明:摩擦因数随着法向载荷的增大而减小,160 N后基本趋向稳定;10 A电流时,浸金属碳销试样的磨损率很低,且增加趋势不明显,30～50 A电流时,磨损率显著提高,且浸金属碳销试样磨损率随着法向载荷的增大而减小,最后趋于平缓;此外,放电强度随着法向载荷的增大而减弱;在低法向载荷下,磨损类型以电弧烧蚀和氧化磨损为主,在高法向载荷下,磨损类型以磨粒磨损和粘着磨损为主,且都伴随有材料的转移。
In a self-designed pin-disc friction and wear testing machine, the stainless steel / immersion metal carbon current-carrying friction and wear tests under different normal loads were carried out. The effect of normal load on the friction and wear properties was analyzed. appearance. The results show that the friction coefficient decreases with the increase of the normal load and basically stabilizes after 160 N. The wear rate of the metal immersed carbon pin specimen is very low at 10 A and the increasing tendency is not obvious. A current, the wear rate increased significantly, and the wear rate of the metal-impregnated carbon pin specimen decreased with the increase of the normal load and finally tended to be gentle. In addition, the discharge intensity decreased with the increase of the normal load. Under low normal load, the wear types are mainly arc ablation and oxidative wear. Under the high normal load, the wear types are mainly abrasive wear and adhesive wear, accompanied by material transfer.