摘要
针对深海推进器用机械密封在工况周期波动下磨损失效现象,在机械密封PV试验机上进行拟实工况测试,建立不同材质摩擦副配对在工况周期波动和定工况下的对照性试验,测试摩擦副实时摩擦系数、形貌演变、表面磨损等数据。试验结果表明:工况周期波动下的SSiC-M106K摩擦系数振幅频率高于恒定工况,且表面粗糙度由0.026μm上升至1.08μm,产生的磨粒对M106K表面造成二次磨损;另一方面,在3种不同材质的摩擦副配对中,SSiC-WC在工况周期波动下的摩擦系数最小且始终稳定在0.012~0.027范围。经SEM电镜测试后发现:以SSiC为动环的SSiC-WC摩擦副磨损程度较小,未出现犁沟效应,而SSiC-M106K表面出现明显磨痕,这是由于在滑动接触过程中磨料在石墨表面转移而导致磨损加剧。因此,SSiC-WC的摩擦配副更适应工况周期波动的服役环境。
Aiming at the wear failure phenomenon of mechanical seal for deep-sea propeller under periodic fluctuation,pseudo-real condition tests were carried out on the mechanical seal PV testing machine,and comparative tests of friction pairs of different materials under periodic fluctuation and fixed working condition were conducted to obtain the real-time friction coefficient,morphology evolution,surface wear and other data of the friction pairs.The test results show that the amplitude frequency of the SSiC-M106K pair’s friction coefficient under periodic fluctuation is higher than that under constant condition,the surface roughness increases from 0.026μm to 1.08μm,and the resulting wear particles cause secondary wear on the surface of M106K material.On the other hand,among the friction pairs of three different materials,the friction coefficient of SSiC-WC pair under periodic fluctuation is the smallest and always keeps in the range from 0.012 to 0.027.SEM observation shows that the wear degree of the SSiC-WC friction pair with SSiC as the moving ring is low,and there is no ploughing effect,but there are obvious wear marks on the surface of SSiC-M106K pair,which is due to the transfer of abrasive on the graphite surface in the process of sliding contact.Therefore,the friction pair of SSiC-WC is more suitable for the service environment with periodic fluctuation of working condition.
作者
徐理善
陆俊杰
宋慧
XU Lishan;LU Junjie;SONG Hui(Zhejiang University Ningbo Institute of Technology, Ningbo, Zhejiang 315010, China;Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China)
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2022年第1期104-112,共9页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(51905480)
宁波市自然科学基金资助项目(2019A610161)
固体润滑国家重点实验室基金资助项目(LSL-1912)。
关键词
深海推进器
工况波动
机械密封
材料配副
摩擦
磨损
deep-sea propeller
working condition fluctuation
mechanical seal
material pair
friction
wear
作者简介
徐理善(1996—)男,硕士生;通信作者:陆俊杰,男,讲师。
