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Extrusion

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Abstract

In view of its practical importance, the process of extrusion of metal components has received very wide attention, and much has been written about it. For the purpose of this book, we shall consider a very limited selection of more recent contributions, since these will be sufficient to indicate the range of the available experimental and theoretical methods and techniques, the attendant practical and analytical problems and the final conclusions. Our consideration of the analytical methods of treatment will not contain any detailed derivations but will be again limited to the indication of the basic principles and concepts on which they are based. Although, of course, a variety of shapes are obtained by extrusion, the processes of rod and tube extrusion are of particular interest since they form in effect the basis for considering the forming of other components. Of the two, rod extrusion is both more complicated and much better documented. In many instances the expressions derived, for this case, require only small modifications before they can be applied to thin-walled tubes, and consequently we shall concentrate on the analyses of rod extrusion.

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References

  1. Johnson, W., and Kudo, H. The mechanics of metal extrusion. Manchester University Press (1962).

    Google Scholar 

  2. Rowe, G.W. An introduction to the principles of metal working. Edward Arnold, London (1965).

    Google Scholar 

  3. Hoffman, O., and Sachs, G. Introduction to the theory of plasticity for engineers. McGraw-Hill, New York (1953).

    Google Scholar 

  4. Johnson, W. The pressure for the cold extrusion of lubricated rod through square dies of moderate reduction at slow speeds. J. Inst. Met. (1957), 85, 403.

    Google Scholar 

  5. Johnson, W. Experiments in plane-strain extrusion. J. Mech. Phys. Solids (1956), 4, 269.

    Article  Google Scholar 

  6. Avitzur, B. Analysis of wire drawing and extrusion through conical dies of large cone angles. Trans. A.S.M.E. (1964), paper no. 63-WA-1.

    Google Scholar 

  7. Avitzur, B. Analysis of central bursting defects in extrusion and wire drawing. Trans. A.S.M.E. (1967), paper no. 67-Prod. 5.

    Google Scholar 

  8. Avitzur, B. Study of flow through conical converging dies. University of Lehigh (1970).

    Google Scholar 

  9. Avitzur, B. The production of bi-metal rod and wire. University of Lehigh (1969).

    Google Scholar 

  10. Shabaik, A.H., and Thompsen, E.G. Friction studies by the visioplasticity method. Proc. 9th Int. M.T.D.R. Conf, Pergamon Press, Oxford (1969).

    Google Scholar 

  11. Shabaik, A.H., and Thompsen, E.G. Computer aided visioplasticity solution of some deformation problems. In Problems of plasticity, vol. 1, Noordhoff Int. Publishing, Gröningen (1973).

    Google Scholar 

  12. Medrano, R.E., and Gillis, P.P. Visioplasticity techniques in axisymmetric extrusion. J. Strain Anal. (1972), 7, 170.

    Article  Google Scholar 

  13. Blazynski, T.Z. Optimization of die design in the extrusion of rod using model materials. Int. J. mech. Sci. (1971), 13, 113.

    Article  Google Scholar 

  14. Sheppard, T., and Raybould, D. On load and temperature rise during the extrusion of superpure Al, Al-Zn and Al-Zn-Mg alloys. J. Inst. Met. (1973), 101, 33.

    Google Scholar 

  15. Cole, B.N., and Bakhtar, F. Dynamic effects in very high speed impact extrusion. Int. J. M.T.D.R. (1963), 3, 77.

    Google Scholar 

  16. Parsons, B., Laycock, D.B., and Cole, B.N. Some preliminary investigations of the high-speed impact extrusion of brittle materials. Proc. Inst. mech. Engrs (1965–6), 180 (31).

    Google Scholar 

  17. Bishop, E.D., Avitzur, B., and Hahn, W.C. Impact extrusion: upper-bound analysis of the early stage. Trans. A.S.M.E., J. Eng. Ind. (1972), 1079.

    Google Scholar 

  18. Alexander, J.M., and Lengyel, B. Hydrostatic extrusion. Mills & Boon, London (1971).

    Google Scholar 

  19. Pugh, H.LI.D. Redundant work and friction in the hydrostatic extrusion of pure aluminium and aluminium alloy. J. Mech. Eng. Sci. (1964), 6, 362.

    Article  Google Scholar 

  20. Pugh, H.L.D. Recent developments in cold forming. Bulleid Memorial Lectures, University of Nottingham (1965), vol. 3B.

    Google Scholar 

  21. Osakada, K., Limb, M., and Mellor, P.B. Hydrostatic extrusion of composite rods with hard cores. Int. J. mech. Sci. (1973), 15, 291.

    Article  Google Scholar 

  22. Alexander, J.M., and Hartley, C.S. On the hydrostatic extrusion of copper covered aluminium rods. NEL-AIRAPT Int. Conf. on Hydrostatic Extrusion (1973), NEL East Kilbride, Glasgow.

    Google Scholar 

  23. Thiruvarudchelvan, S. and Alexander, J.M. Hydrodynamic lubrication in hydrostatic extrusion using a double reduction die. Int. J.M.T.D.R. (1971), 11, 251.

    Google Scholar 

  24. Dowson, D., and Parsons, B. An elasto-plasto-hydrodynamic lubrication study of the hydrostatic extrusion process. NEL-AIRAPT Int. Conf. on Hydrostatic Extrusion (1973), NEL East Kilbride, Glasgow.

    Google Scholar 

  25. Parsons, B., Laycock, D.B., and Cole, B.N. Further developments in the high speed impact extrusion of brittle materials. Proc. 8th Int. M.T.D.R. Conf, Pergamon Press, Oxford (1967).

    Google Scholar 

  26. Parsons, B., Bretherton, D., and Cole, B.N. A preliminary investigation of the combined hydrostatic extrusion and drawing process. Proc. 9th Int. M.T.D.R. Conf., Pergamon Press, Oxford (1968).

    Google Scholar 

  27. Parsons, B., Bretherton, D., and Cole, B.N. Further studies of the combined hydrostatic extrusion and drawing process. Proc. 11th Int. M.T.D.R. Conf, Pergamon Press, Oxford (1971).

    Google Scholar 

  28. Dunn, P., and Lengyel, B. Lubrication and friction in hydrostatic extrusion/drawing. J. Inst. Met. (1972), 100, 317.

    Google Scholar 

  29. Shabaik, A.H., and Kobayashi, S. Computer application to the visioplasticity method. Trans. A.S.M.E., J. Eng. Ind. (1967), 339.

    Google Scholar 

  30. Hill, R. The mathematical theory of plasticity. Oxford University Press (1950).

    Google Scholar 

  31. Wilcox, R.J., and Whitton, P.W. The cold extrusion of metals using lubrication at slow speeds. J. Inst. Met. (1959), 87, 289.

    Google Scholar 

  32. Avitzur, B. Metal forming: processes and analysis. McGraw-Hill, New York (1968).

    Google Scholar 

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© 1976 T. Z. Blazynski

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Blazynski, T.Z. (1976). Extrusion. In: Metal Forming. Palgrave, London. https://doi.org/10.1007/978-1-349-02861-0_8

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  • DOI: https://doi.org/10.1007/978-1-349-02861-0_8

  • Publisher Name: Palgrave, London

  • Print ISBN: 978-1-349-02863-4

  • Online ISBN: 978-1-349-02861-0

  • eBook Packages: EngineeringEngineering (R0)

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