Abstract
The forming of coated sheet steel products is performed for a wide range of processing conditions. This article examines the effects of die history on the frictional nature of the sheet-die interface. It has been found that as successive tests are performed on a die from the as-lapped condition to the “run-in” condition, the die surface morphology changes significantly and the coefficient of friction, μ, decreases. Changes in surface roughness as well as scratch formation on the die are believed to affect the nature of the die-workpiece, lubricant interaction. The findings in this study suggest that the extensive polishing procedures used in the manufacture of new stamping dies should be carefully reevaluated.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
K.C. Ludema, Friction, Wear Lubrication: A Textbook in Tribology, CRC Press, New York, 1996
F.P. Bowden and D. Tabor, The Friction and Lubrication of Solids, Parts I and II, Oxford University Press, 1964
H. Czichos, Basic Tribological Parameters, Metals Handbook, Vol 18, Friction, Lubrication, and Wear, ASM International, 1992, p 473–479
D.W. Vallance and D.K. Matlock, Applications of the Bending-Under-Tension Friction Test to Coated Sheet Steels, J. Mater. Eng. Perform., Vol 1, 1992, p 685–693
T.A. Hylton, “Frictional Behavior of Electrogalvanized Sheet Steels,” Ph.D. thesis, T-4521, Colorado School of Mines, Golden, CO, 1994
H.D. Nine, Draw Bead Forces in Sheet Metal Forming, Mechanics of Sheet Metal Forming, D.P Koistein and N.M. Wang, Ed., Plenum Press, 1978, p 179–211
J.A. Schey, “Solid-Film Lubrication of Galvanized Sheets,” SAE Technical Paper No. 950697, 1995
N. Bay and T. Wanheim, Real Area of Contact and Friction Stress at High Pressure Sliding Contact, Wear, Vol 38, 1976, p 201–209
J. M. Challen and P.L.B. Oxley, A Slip Line Field Analysis of the Transition from Local Asperity Contact to Full Contact in Metallic Sliding Friction, Wear, Vol 100, 1984, p 171–183
K. Miura, T. Hira, O. Furukimi, and T. Obara, Zinc Coated Steel Sheets with Superior Press Formability and Image Clarity, Proceedings of the 37th Mechanical Working and Steel Processing Conference, Vol 33, Iron and Steel Society/AIME, 1996, p 173–178
T. Mizuno and K. Hasegawa, Effects of Die Surface Roughness on Lubrication Conditions in the Sheet Metal Compression-Friction Test, J. Lubr. Technol. (Trans. ASME), Vol 104, 1982, p 3–11
G.M. Dalton and J.A. Schey, “Effect of Bead Finish on Friction and Galling in the Drawbead Test,” SAE Technical Paper No. 920632, 1992
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wichern, C.M., Van Tyne, C.J. Frictional behavior of the sliding interface between an A2 steel die and zinc-coated steel sheet. J. of Materi Eng and Perform 8, 571–576 (1999). https://doi.org/10.1007/s11665-999-0011-9
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/s11665-999-0011-9