基于铸辗复合成形的42CrMo钢环件摩擦磨损性能的试验研究  

Experiment Study on Friction and Wear Properties of 42CrMo Ring Based on Casting-rolling Compound Forming

作　　者：秦芳诚[1] 杜诗文[1] 李永堂[1] 齐会萍[1] 

机构地区：[1]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《热加工工艺》2013年第18期76-80,共5页Hot Working Technology

基　　金：国家自然科学基金重点项目(51135007);国家自然科学基金资助项目(51075290);国家自然科学基金青年资助项目(51205270);山西省自然科学基金资助项目(2011011025-1);山西省科技攻关项目(20100321083);校博士科研启动项目(20122053)

摘　　要：采用MMW-1A万能摩擦磨损试验机对基于铸辗复合成形的42CrMo钢环件摩擦磨损性能进行研究,分析了载荷、滑动速度等工况条件对其摩擦磨损性能的影响,并利用扫描电镜观察磨损表面形貌,对其摩擦磨损机理进行探讨。结果表明,其体积磨损量随滑动距离的延长不断增加,磨损量随载荷、滑动速度的增大而增加;摩擦系数随滑动速度的提高而降低,随载荷的增大先减小后增大;在载荷为100N、滑动速度为0.78m/s时,42CrMo钢环件的耐磨性能较好。该钢的摩擦磨损机理主要是磨粒磨损和粘着磨损;在大载荷、高滑动速度下,发生严重塑性变形,降低了42CrMo钢环件的耐磨性。Friction and wear properties of 42CrMo tings based on the casting-rolling compound forming were investigated by MMW-IA universal friction and abrasion tester. The effects of load and sliding speed on the friction and wear performance were analyzed and the mechanism was also discussed through observing the wear surface using scanning electron microscopy. The results show that the wear volume of 42CrMo rings increases with the increase of sliding distance and the wear mass loss increases with the increase of load and the sliding speed. The friction coefficient decreases with the increase of sliding speed. But with the increase of the load, the friction coefficient increases after decreasing to a minimum value. This material shows good wear resistance at a load of 100 N and a sliding speed of 0.78 m/s. By observing with SEM, it is found that the abrasive particle wear and adhesive wear are the mainly wear mechanism of 42CrMo rings. The severe plastic deformation often happens, which can reduce the abrasive resistance of the alloy when the load and sliding speed is large.

关 键 词：铸辗复合成形 42CrMo钢环件 摩擦磨损试验 摩擦系数 摩擦磨损机理 

分 类 号：TG142[一般工业技术—材料科学与工程]