Abstract
In an automotive engine valve forging process, the billet is cold sheared, induction heated, and fed to a mechanical press for a two-stage forging operation with the first stage being extrusion. The main limiting factor in this operation is the wear of the dies during the first stage, extrusion. In this study. abrasive wear was identified as the primary mode of wear, and computer simulation was used to investigate the effect of process variables, such as press speed, initial billet temperature, and die preheat temperature upon abrasive wear. The result generated by this study should be applicable to other part geometry and not limited just to exhaust valves.
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S.M. Ali, B.W. Rooks, and S.A. Tobias, The Effect of Dwell Time on Die Wear in High Speed Hot Forging,Proc. Inst. Mech. Eng., Vol 185, 1971, p 1171–1186
B.W. Rooks, A.K. Singh, and S.A. Tobias, Temperature Effects in Hot Forging Dies,Met. Technol, 1974, p 449-455
B.W. Rooks, The Effect of Die Temperature on Metal Flow and Die Wear During High-Speed Hot Forging,Proc. of the 15th International MTDR Conference (Birmingham, England), 1974, p 487–494
A.K. Singh, and B.W. Rooks, and S.A. Tobias, Factors Affecting Die Wear,Wear, Vol 25, 1973, p 271–279
E. Felder and J.L. Montagut, Friction and Wear During the Hot Forging of Steels,Tribol. Int., 1980, p 61–68
J. Renaudin, G. Batit, Y. Thore, and E. Felder, A Way to Build a Computer Program for Forecasting the Abrasive Wear of Hot Forging Dies,11th International Drop Forging Conference (National Forging Industry Association, Germany), Koln, Germany, 1983
O.C. Vardan, A. Bagchi, and T. Altan, Investigation of Die Wear in Upsetting Using FEM code ALPID,Proc. of NAMRC-XV (Bethlehem, PA), Society of Manufacturing Engineers, 1987
Private communication between Mitsubishi Heavy Industries and T. Altan (Batteile Memorial Lab., Columbus, OH 43210), 1976
W.E.J. Cross,Metal Treatment, Vol 16, 1949, p 141–145
E. Schlomach,Werkstatt und Betrieb (German), Vol 107, 1974, p 145–148
R. Shivpuri and S.L. Semiatin, Friction of Wear of Dies and Die Materials,ASM Handbook, Vol 14, 1992, p 621–648
E. Robinowicz,Friction and Wear of Materials, John Wiley & Sons, 1965
J.M. Larson, L.F. Jenkins, S.L. Narasimhan, and J.E. Belmore, Engine Valves - Design and Materials Evolution,J. Eng. Gas Turbines Power (Trans. ASME), Vol 109, 1987, p 355–361
G.D. Lahoti, V. Nagpal., and T. Altan, Selection of Lubricants in Hot forging and Extrusion, IITRI (Chicago, IL), Illinois Institute of Technology Research Institute, 1978
M. Knoerr, H. Krueger, C. Rentsh, and T. Altan, “A Technique to Avoid Failure of Forging Dies,” Report ERC/NSM-B-D-92-18, Engineering Research Center for Net Shape Manufacturing, The Ohio State University, 1992
A. Kannappan, Wear in Forging Dies,Met. Form., Vol 36, 1969, p 335–34
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R. Thlsyan, Department of Industrial and Systems Engineering, The Ohio State University, Columbus, OH 43210, USA
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Tulsyan, R., Shivpuri, R. Computer modeling of wear in extrusion and forging of automotive exhaust valves. JMEP 4, 161–165 (1995). https://doi.org/10.1007/BF02664109
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DOI: https://doi.org/10.1007/BF02664109