Enhanced granular medium-based tube and hollow profile press hardening

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Hui Chen
  • Sigrid Hess
  • Jan Haeberle
  • Sebastian Pitikaris
  • Philip Born
  • Alper Güner
  • Matthias Sperl
  • A. Erman Tekkaya

Active and passive control strategies of internal pressure for hot forming of tubes and hollow profiles with granular media are described. Force transmission and plastic deformation of granular medium is experimentally investigated. Friction between tube, granular medium and die, and the external stress field are shown to be essential for the process understanding. Wrinkling, thinning and insufficient forming of the tube establishes the process window for the active pressure process. By improving the punch geometry and controlling tribological conditions, the process limits are extended. Examples for the passive pressure process reveal new opportunities for hot forming of tubes and hollow profiles.

OriginalspracheEnglisch
ZeitschriftCIRP Annals - Manufacturing Technology
Jahrgang65
Ausgabenummer1
Seiten (von - bis)273-276
Anzahl der Seiten4
ISSN0007-8506
DOIs
PublikationsstatusErschienen - 2016
Extern publiziertJa

DOI

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