Improved Wear Behavior of Cylindrical Roller Thrust Bearings by Three-Beam Laser Interference

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• 作者：Andreas Rosenkranz ; Andreas Stratmann ; Carsten Gachot ; Gero Burghardt ; Georg Jacobs and Frank Mü ; cklich
• 刊名：Advanced Engineering Materials
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：18
• 期：5
• 页码：854-862
• 全文大小：2046K
• ISSN：1527-2648

文摘

Within this study, the bearing washer surfaces of cylindrical roller thrust bearings (type 81212, SAE 52100) are laser-patterned with a dot-like pattern (periodicity of 6.5 µm and depth of 1 µm). The wear behavior of the patterned bearings is compared to that of bearings with a ground surface finish. The tribological tests are conducted on an adapted FE-8-test rig using a mineral oil with a low concentration of zinc dialkyldithiophosphate (0.025 wt% P). This study demonstrates an 83% reduction in the wear loss of the laser-patterned bearing. The patterns are able to store wear particles in the topographic minima, thus reducing abrasive wear and therefore the wear loss. Additionally, the formation of a wear inhibiting tribo layer is enhanced as the surface pattern acts as secondary source for the deployed additive.