High interface friction is a primary cause for adhesive pickup in cold forging and extrusion of aluminum alloys and of wear of sliding surfaces in thrust bearings and seals. This paper describes investigations of femtosecond laser texturing for reduction of interface friction on sliding surfaces. Direct-write femtosecond pulsed laser micromachining is used to create microgroove patterns with varying size and density on metal forming dies. Ablation of patterned textures using a Digital Light Processor (DLP) programmable mask and a homogenized femtosecond laser beam is also studied. The achievable resolution and depth profiles and material removal rate for laser micromachining of lubrication-enhancing features is characterized. In metal forming tests, the effectiveness of various laser–machined patterns for enhancing interface lubrication is determined.
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ICALEO 2007: 26th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing
October 29–November 1, 2007
Orlando, Florida, USA
ISBN:
978-0-912035-88-8
PROCEEDINGS PAPER
Femtosecond laser micromachining of metal surfaces for lubrication enhancement
Hae Woon Choi;
Hae Woon Choi
Department of Industrial, Welding and Systems Engineering, The Ohio State University
, 1971 Neil Ave, Columbus OH 43210, USA
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Yong Chae Lim;
Yong Chae Lim
Department of Industrial, Welding and Systems Engineering, The Ohio State University
, 1971 Neil Ave, Columbus OH 43210, USA
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Dave F. Farson;
Dave F. Farson
Department of Industrial, Welding and Systems Engineering, The Ohio State University
, 1971 Neil Ave, Columbus OH 43210, USA
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Yuanjie Wu;
Yuanjie Wu
Department of Industrial, Welding and Systems Engineering, The Ohio State University
, 1971 Neil Ave, Columbus OH 43210, USA
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Rajiv Shivpuri
Rajiv Shivpuri
Department of Industrial, Welding and Systems Engineering, The Ohio State University
, 1971 Neil Ave, Columbus OH 43210, USA
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Published Online:
October 01 2007
Citation
Hae Woon Choi, Yong Chae Lim, Dave F. Farson, Yuanjie Wu, Rajiv Shivpuri; October 29–November 1, 2007. "Femtosecond laser micromachining of metal surfaces for lubrication enhancement." Proceedings of the ICALEO 2007: 26th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. ICALEO 2007: 26th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Orlando, Florida, USA. (pp. M901). ASME. https://doi.org/10.2351/1.5061159
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