Size and speed effects from lubricant breakdown in plastic compression

Size dependence of average pressure for reducing thin, geometrically similar, lubricated disks of aluminum is associated with development of lubricant film breakdown at periphery; greater amount of interface sliding of larger disks led to earlier breakdown and higher stresses; however, with certain liquid lubricants size effect reversed with increasing reduction, larger disks requiring smaller stress; this is related to presence of lubricant reservoir, that increases with sample size, supplying peripheral region and controlling progress of breakdown. (see also ASME -- Trans J Eng Industry v 85 n 4 Nov 1963 p 329-34)

Duke Authors

Cited Authors

  • Pearsall, GW; Backofen, WA

Published Date

  • 1962

Published In

  • American Society of Mechanical Engineers -- Papers

Start / End Page

  • 6 -