Experimental Verification of Dieless-Drawing Theories

  • Oskar Pawelski
  • Wolfgang Rasp
  • Walter Wengenroth
Conference paper

Abstract

The dieless-drawing method is described briefly. Because of the strong thermo-mechanical coupling it is difficult to solve the underlying differential equations. Therefore several assumptions have been made to obtain simplified but nevertheless realistic models of the process. For an axi-symmetric cylindrical model the heat-conduction equation can be solved analytically and the radial dependency can be studied. For thin specimens a one-dimensional model is capable of predicting the most important parameters like axial temperature distribution and the final shape of the deformation zone. In contrast to conventional drawing the dieless-drawing method provides the possibility of producing variable cross-sections. The necessary control function is given for an example of a linearly varying final shape.

Keywords

Sine 

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References

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Copyright information

© Springer-Verlag London Limited 2000

Authors and Affiliations

  • Oskar Pawelski
    • 1
  • Wolfgang Rasp
    • 1
  • Walter Wengenroth
    • 1
  1. 1.Max-Planck-Institut für Eisenforschung GmbHDüsseldorfGermany

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