Abstract
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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
T.N. Cetinkale and M. Fishenden, “Thermal Conductance of Metal Surfaces in Contact,” General Discussion on Heat Transfer,Proceedings International Heat Transfer Conference (London Institute of Mechanical Engineers) (ASME, New York, 1951), p. 271.
N.D. Weills and E.A. Ryder, “Thermal Resistance Measurement of Joints Formed Between Stationary Metal Surfaces,” Trans. ASME71(3), p. 259 (1949).
M.E. Barzelay, K.N. Tong, and G.F. Holloway, “Effects of Pressure on Thermal Contact Conductance of Contact Joints,” NACA TN 3295 (1955).
H. Fenech and W.M. Rohsenow, “Prediction of Thermal Conductance of Metallic Surfaces in Contact,”J. Heat Trans. 85, p. 15 (1963).
M.A. Kellow, A.N. Bramley, and F.K. Bannister, “A Measurement of Temperatures in Forging Dies,”Int. J. Mach. Tool Design Res. 9, p. 239 (1969).
S.L. Semiatin, E.W. Collings, V.E. Wood, and T. Altan, “Determination of the Interface Heat Transfer Coefficient for Non-isothermal Bulk-Forming Processes,”J. Eng. Ind., Trans. ASME,109, p. 49 (1987).
P.R. Burte, “Measurement and Analysis of Heat Transfer and Friction During Hot Forging,” M.S. Thesis (The Ohio State University, Columbus, Ohio, 1989).
T. Wanheim and N. Bay, “Friction and Tool,”Design of Tools for Deformation Processes, T.Z. Blazynski (ed.), Elsevier, New York (1985).
K.L. Johnson,Contact Mechanics, Cambridge University Press, New York (1987).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jain, V.K. Determination of heat transfer coefficient for forging applications. J. Materials Shaping Technology 8, 193–202 (1990). https://doi.org/10.1007/BF02833814
Issue Date:
DOI: https://doi.org/10.1007/BF02833814