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软磨料对电积钴表面油污去除机制研究 预览

Removal Mechanism of Oil Contamination on Electrodeposited Cobalt Surface By Different Abrasives
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摘要 为清除成型电积钴块表面油污染并了解其去油机制,在滚筒摩擦磨损试验机上考察不同转速下不同体积比例磨料对油污染钴块表面的清洗效果以及磨损行为,采用扫描电子显微镜对钴块磨损表面形貌进行观察并分析磨损机制。结果表明:影响钴表面油污染去除效果的影响因素由大到小依次为转速、磨料类型和磨料与油污染钴块的体积比例;相同磨料体积比例下,转速越小则去油时间越短;相同转速与磨料体积比例条件下,稻壳对钴表面油污去除效果好于锯末。在文中试验条件下,转速为17r/min、磨料与油污染钴块的体积比例为4∶1时,钴表面油污染清洗效果最佳。锯末对钴表面油污的去除以多周期重复疲劳机制为主,并伴随有显微切削机制;而稻壳对钴表面油污的去除是显微切削机制为主,伴有疲劳磨损机制。 In order to remove the oil contamination on the surface of the electrodeposited cobalt block and to understand its deoiling mechanism,the influence of different abrasives on the wear properties of cobalt block with oil contamination was studied by friction contrast tests in the roller friction and wear testing machine.The wear behavior and cleaning effect between different rotating speed and abrasive proportion were discussed,and the wear surface morphology of cobalt was observed and analyzed by scanning electron microscope (SEM).The results show that the external factors effecting the removal of oil contamination on cobalt surface are rotation speed,abrasive type and volume ratio between abrasive and oil contaminated cobalt block.Under the same abrasive proportion condition,the smaller the rotating speed,the shorter the removal time;Under the same rotation speed and abrasive proportion,the decontamination effect of rice husk for cobalt is more obvious than that of sawdust.The optimum parameter for the removal of oil contamination on the cobalt surface is rotation speed of 17 r/min with the volume ratio between abrasive and cobalt bulk of 4∶1 under the experimental conditions in this paper.The removal mechanism of the oil contamination on the cobalt surface by sawdust is multi-cycle repeat fatigue wear with micro cutting wear,while the removal mechanism by rice husk is mainly micro cutting wear with multi-cycle repeat fatigue wear.
作者 王希靖 杨超 王博士 刘骁 WANG Xijing;YANG Chao;WANG Boshi;LIU Xiao(State Key Laboratory of Advanced Processing and Recycling of Non.ferrous Metals,Lanzhou University of Technology,Lanzhou Gansu 730050,China)
出处 《润滑与密封》 CAS CSCD 北大核心 2019年第1期98-102,共5页 Lubrication Engineering
关键词 磨损性能 稻壳 钴块 摩擦磨损 wear behavior rice hull cobalt bulk friction and wear
作者简介 王希靖(1956-),教授,主要研究方向为焊接设备及其自动化、搅拌摩擦焊技术及焊接质量控制和检测.E-mail:wangxj@lut.cn
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