滚压对碳钢微动磨损性能的影响
发布时间：2019-02-08 17:40
【摘要】：为了提高碳钢的微动磨损特性,采用不同参数的滚压工艺对45号钢试样进行表面处理,通过表面形貌测量仪、维氏显微硬度计和扫描电镜(SEM)考察在不同参数下,滚压工艺对钢的表面粗糙度、显微硬度、硬化层的厚度等的影响,然后在SRV IV摩擦磨损试验机上对比研究各工艺处理试样的微动磨损特性。研究结果表明:滚压工艺使试样表面形成一定厚度的硬化层,可以降低试样表面的粗糙度,提高表层显微硬度;滚压工艺使试样的磨损量和摩擦因数显著减小;未处理试样的磨损形式主要为黏着磨损和疲劳磨损,滚压后试样以磨粒磨损为主,并伴随轻微的疲劳剥落;不同的滚压参数对45号钢表面性能和微动性能影响较大,滚压工艺使45号钢试样的抗微动磨损性能更加优异。
[Abstract]:In order to improve the fretting wear characteristics of carbon steel, the surface of 45 steel was treated by rolling technology with different parameters. The surface morphology of 45 steel was investigated by means of surface topography measuring instrument, Vickers microhardness meter and scanning electron microscope (SEM). The effect of rolling technology on the surface roughness, microhardness and the thickness of hardened layer of steel was studied. The fretting wear characteristics of the treated samples were compared with each other on SRV IV friction and wear tester. The results show that the rolling process can make the specimen surface form a certain thickness of hardening layer, reduce the roughness of the sample surface, improve the microhardness of the surface layer, and the wear and friction coefficient of the specimen can be significantly reduced by the rolling process. The wear patterns of untreated samples are mainly adhesive wear and fatigue wear. After rolling, abrasive wear is the main wear pattern, followed by slight fatigue spalling. Different rolling parameters have great influence on the surface and fretting properties of 45 steel. Rolling process makes the fretting wear resistance of 45 steel more excellent.
【作者单位】： 华南理工大学机械与汽车工程学院;中国地质大学(北京)工程技术学院;
【基金】：国家自然科学基金资助项目(41572362,51375466,51275494)~~
【分类号】：TG142.31;TG306
[Abstract]:In order to improve the fretting wear characteristics of carbon steel, the surface of 45 steel was treated by rolling technology with different parameters. The surface morphology of 45 steel was investigated by means of surface topography measuring instrument, Vickers microhardness meter and scanning electron microscope (SEM). The effect of rolling technology on the surface roughness, microhardness and the thickness of hardened layer of steel was studied. The fretting wear characteristics of the treated samples were compared with each other on SRV IV friction and wear tester. The results show that the rolling process can make the specimen surface form a certain thickness of hardening layer, reduce the roughness of the sample surface, improve the microhardness of the surface layer, and the wear and friction coefficient of the specimen can be significantly reduced by the rolling process. The wear patterns of untreated samples are mainly adhesive wear and fatigue wear. After rolling, abrasive wear is the main wear pattern, followed by slight fatigue spalling. Different rolling parameters have great influence on the surface and fretting properties of 45 steel. Rolling process makes the fretting wear resistance of 45 steel more excellent.
【作者单位】： 华南理工大学机械与汽车工程学院;中国地质大学(北京)工程技术学院;
【基金】：国家自然科学基金资助项目(41572362,51375466,51275494)~~
【分类号】：TG142.31;TG306
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