Aluminum alloy workpieces of different roughness, lubricated with graphite, P.T.F.E., lead or polyethylene, were upset between overhanging dies. Measurements of the width of the unlubricated zone formed at the workpiece edge indicated that the rates of outward transport of the lubricants were increased by roughening the workpiece. This was in agreement with a simple analytical model of the lubrication process.
The Transport and Breakdown of Solid Lubricants in a Simple Forging Operation
W. R. D. Wilson,
W. R. D. Wilson
Department of Mechanical Engineering, University of Massachusetts, Amherst, Mass.
Department of Machine and Tool Design, Springfield Technical Community College, Armory Square, Springfield, Mass.
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Wilson, W. R. D., and Lak, S. (April 1, 1977). "The Transport and Breakdown of Solid Lubricants in a Simple Forging Operation." ASME. J. of Lubrication Tech. April 1977; 99(2): 230–234. https://doi.org/10.1115/1.3453030
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