Journal of Materials Shaping Technology

, Volume 8, Issue 3, pp 193-202

First online:

Determination of heat transfer coefficient for forging applications

  • Vinod K. JainAffiliated withMechanical and Aerospace Engineering Department, University of Dayton

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


A setup for measuring the contact heat transfer coefficient between a tool steel die and a specimen was designed, developed, and fabricated. A microcomputer was programmed to collect and process the temperature data. Tests were conducted under dry and lubricated conditions at different temperatures and pressures on four aluminum alloys, namely, 2024-T4, 2024-O, 6061-O, and 1100-O. MoS2 was used as the lubricant. Results indicate that the heat transfer coefficient increases with pressure and decreases with specimen yield strength. Variation in heat transfer coefficient with temperature is due to chemical changes which occur in the lubricant at the test temperature. The heat transfer coefficient was an order of magnitude greater at high pressures than at nominally zero pressure.