激光技术
激光技術
격광기술
LASER TECHNOLOGY
2015年
4期
506-509
,共4页
激光技术%抗磨减摩%表面织构%端面密封
激光技術%抗磨減摩%錶麵織構%耑麵密封
격광기술%항마감마%표면직구%단면밀봉
laser technique%antiwear and friction%surface texturing%face seal
为了研究表面织构化对端面密封材料摩擦性能的影响，采用Nd∶YAG固体脉冲激光对GCr15钢盘表面进行了织构化处理，形成了微孔型和凹槽型两种表面形貌。在摩擦试验机上模拟端面密封形式对聚四氟乙烯环／GCr15盘进行摩擦学性能测试，并对试样表面的磨损形貌进行了分析。结果表明，在油润滑条件下，织构化试样的摩擦因数和磨损量均低于光滑试样的，且微孔型织构的耐磨性优于凹槽形的，因为凹槽型织构排列使油膜厚度不均匀，摩擦因数波动大；在干摩擦条件下，适当的织构形貌对转移膜的保持有利，同时可以捕获磨屑，减少磨粒磨损的作用。与光滑配副相比，表面织构降低了配副双方的磨损率。
為瞭研究錶麵織構化對耑麵密封材料摩抆性能的影響，採用Nd∶YAG固體脈遲激光對GCr15鋼盤錶麵進行瞭織構化處理，形成瞭微孔型和凹槽型兩種錶麵形貌。在摩抆試驗機上模擬耑麵密封形式對聚四氟乙烯環／GCr15盤進行摩抆學性能測試，併對試樣錶麵的磨損形貌進行瞭分析。結果錶明，在油潤滑條件下，織構化試樣的摩抆因數和磨損量均低于光滑試樣的，且微孔型織構的耐磨性優于凹槽形的，因為凹槽型織構排列使油膜厚度不均勻，摩抆因數波動大；在榦摩抆條件下，適噹的織構形貌對轉移膜的保持有利，同時可以捕穫磨屑，減少磨粒磨損的作用。與光滑配副相比，錶麵織構降低瞭配副雙方的磨損率。
위료연구표면직구화대단면밀봉재료마찰성능적영향，채용Nd∶YAG고체맥충격광대GCr15강반표면진행료직구화처리，형성료미공형화요조형량충표면형모。재마찰시험궤상모의단면밀봉형식대취사불을희배／GCr15반진행마찰학성능측시，병대시양표면적마손형모진행료분석。결과표명，재유윤활조건하，직구화시양적마찰인수화마손량균저우광활시양적，차미공형직구적내마성우우요조형적，인위요조형직구배렬사유막후도불균균，마찰인수파동대；재간마찰조건하，괄당적직구형모대전이막적보지유리，동시가이포획마설，감소마립마손적작용。여광활배부상비，표면직구강저료배부쌍방적마손솔。
In order to study effect of laser surface texturing on tribological properties of face seal materials , GCr15 steel disc was textured by Nd∶YAG solid-state pulsed laser to form two surface morphologies of dimple and groove .The tribological performance for polytetrafluoroethylene ring /GCr15 disc ( simulating face seal ) was tested on the friction tester and the worn surface morphologies were analyzed .The results show that friction coefficient and wear loss of textured samples are lower than the smooth in the oil lubrication condition .And the wear resistance of dimple-textured sample was better than the groove because the groove-textured arrangement caused the oil film thickness uneven and the friction coefficient fluctuated .Under the dry friction condition , the existence of the favorable texturing can maintain the transfer film, capture wear debris and reduce abrasive wear .Compared with the smooth sample , the wear rate of the pair can be reduced .
