Summary
The effectiveness of lubricant conditions on the hot forging of steel has been investigated using four machines with ram speeds ranging from 0.4 in/s to 62 ft/s. Four conditions of lubrication have been used, namely Copaslip, colloidal graphite in water, clean dry dies and lightly oxidised billets and clean dry dies with heavily oxidised billets.
Ring tests were employed to determine the frictional restraints at the billet—die interface, during metal flow. Subsequently a cavity die was used to measure gas pressures in the unfilled portion of the die cavity, resulting from each deformation speed and condition of lubrication.
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References
E. Siebel and W. Lueg, 1933. ‘Untersuchungen über die Spannungsverteilung im Waltzspalt’, Mitt. K. W. Inst. Eisenforschung, Dusseldorf, 15, 1–14.
C. L. Smith, F. H. Scott and W. Sylwestrowiz, 1952. ‘Pressure distribution between stock and rolls in hot and cold flat rolling’, J. Iron Steel Inst., 170, 347–59.
G. T. Van Rooyen and W. A. Backofen, 1957. ‘Friction in cold forging’, J. Iron Steel Inst., 186, 235–43.
I. M. Cole and D. H. Sansome, 1968. ‘A review of the application of pin load cell pressure measurement techniques to metal deformation processes’, Proc. 9th Intern. M.T.D.R. Conf., pp. 271–86.
M. B. Peterson and F. F. Ling. ‘Friction and Lubrication in Hot Metal Deformation’. Mechanical Technology Incorporated, Luttam, New York, AD 630–204 March 20: 1966.
O. Pawelski, G. Grave and D. Lohr, 1969. ‘Coefficient of friction and temperature distribution during hot forming of steel with different lubricants’, Proc. Iron Steel Inst. and Inst. Mech. Engrs. Tribol. Conf.
M. Kunogi, 1954. ‘On the plastic deformation of the hollow cylinder under axial load’, J. Sci. Res. Inst. Japan, 30, No. 2, 63–92.
H. Kudo, 1955. ‘An analysis of plastic compression deformation of a lamella between rough plates by the energy method’, Proc. 5th Japan Natl. Congr. Appl. Mech., Vol. 5, pp. 75–8.
A. T. Male and M. G. Cockroft, 1964. ‘A method for the determination of the coefficient of friction of metals under conditions of bulk plastic deformation’, J. Inst. Metals, 93, 38–46.
A. T. Male, 1964. The effect of temperature on the frictional behaviour of various metals during metal working’, J. Inst. Metals, 93, 489–94.
S. C. Jain and A. N. Bramley, 1967–8. ‘Speed and frictional effects in hot forging’, Proc. Inst. Mech. Engrs. 182 pt. 1, 783–95.
H. Tolkien, 1961. ‘Lubricant effects in drop forging dies’, Werkstattstechnik,51, No. 2, 102–5.
S. A. Tobias, 1970. The Petro-Forge forming system’, A.S.M.E. Tech. Paper, No. MF-70–184.
A. D. Sheikh, M. K. Das and S. A. Tobias, 1971. The development of the slow-speed Petro-Forge machine’, Intern. J. Machine Tool Design Res., 11, 13–29.
T. A. Dean, 1970. ‘A preliminary warm forging essay’, Proc. 11th Intern. M.T.D.R. Conf, pp. 779–801.
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© 1973 Macmillan Publishers Limited
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Sheikh, A.D., Dean, T.A., Das, M.K., Tobias, S.A. (1973). The Effect of Impact Speed and Lubricant in Hot Forging: Part 1. Interface Friction and Die Cavity Pressure. In: Tobias, S.A., Koenigsberger, F. (eds) Proceedings of the Thirteenth International Machine Tool Design and Research Conference. Palgrave, London. https://doi.org/10.1007/978-1-349-01857-4_50
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DOI: https://doi.org/10.1007/978-1-349-01857-4_50
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