Effects of Lubricant Viscosity at Pressure and Sliding Velocity on Lubricating Conditions in the Compression-Friction Test on Sheet Metals

[+] Author and Article Information
T. Mizuno

Department of Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Japan

M. Okamoto

Teikoku Piston Ring Co., Ltd., Okaya, Japan

J. of Lubrication Tech 104(1), 53-59 (Jan 01, 1982) (7 pages) doi:10.1115/1.3253164 History: Received September 15, 1980; Online November 13, 2009


To measure friction on the die-workpiece interface, sheet specimens of soft copper were first subjected to plastic compression in plane strain, and then one of the platens was slid in the direction of sheet width. With lower viscosity lubricants and lower sliding speeds, depressed flat portions and discrete oil pits were evident on the worked surfaces. With lubricants of higher viscosity under pressure and higher sliding speeds, “microscopic plasto-hydrodynamic interactions” operated to diminish oil pits and to increase the thickness of boundary films on the flat portions. The frictional stress increased almost logarithmically with the product of viscosity under pressure and sliding speed.

Copyright © 1982 by ASME
Your Session has timed out. Please sign back in to continue.





Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In