Abstract
Upsetting experiments were conducted on aluminum alloy workpieces with a variety of lubricants. Measurements of the width of the unlubricated zone with a mineral oil were in good agreement with Wilson and Carpenter's theory. The addition of surface active materials to the oil did not affect the extent of the unlubricated zone but did reduce the forming load. The breakdown process was also observed with solid lubricant coatings.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Paper version not known
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
