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研究了不同回火工艺的Cr12Mo V钢对磨盘对H13钢在25和600℃下干滑动磨损行为的影响,采用XRD、SEM、显微硬度计等对磨损表面、亚表面的结构和形貌进行分析,并探讨其磨损机制。结果表明,不同回火工艺的Cr12Mo V钢对磨盘显著影响H13钢的磨损行为:对磨Cr12Mo V(55 HRC)时,磨损率在25℃下随载荷增加而缓慢增长,600℃下急剧增加。对磨Cr12Mo V(42 HRC)时,磨损率在25℃下增长较快,而在600℃下增长缓慢。25℃下,无论对磨盘硬度高低,主要磨损机制均为粘着磨损和磨粒磨损;而高温下,对磨低硬度盘时为氧化轻微磨损,对磨高硬度盘时为氧化磨损和严重塑性挤出磨损。
The effects of different tempering Cr12Mo V steel on the wear behavior of H13 steel at 25 and 600 ℃ were investigated. The structure and morphology of wear surface and subsurface were investigated by XRD, SEM and microhardness tester Analysis, and explore its wear mechanism. The results show that the wear behavior of Cr12Mo V steel with different tempering process on the wear plate significantly affects the wear behavior of H13 steel. The wear rate increases slowly with the increase of load at 25 ℃ for Cr12Mo V (55 HRC) and sharply increases at 600 ℃. On Cr12Mo V (42 HRC), the wear rate increased rapidly at 25 ° C and slowly at 600 ° C. At 25 ℃, no matter the hardness of the disc, the main wear mechanisms are adhesive wear and abrasive wear; while the high temperature, the wear of the low hardness of the disc is slightly oxidized wear, the wear of the high hardness disc oxidative wear and severe plastic extrusion Out of wear.