Enhanced granular medium-based tube and hollow profile press hardening
Research output: Journal contributions › Journal articles › Research › peer-review
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In: CIRP Annals - Manufacturing Technology, Vol. 65, No. 1, 2016, p. 273-276.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Enhanced granular medium-based tube and hollow profile press hardening
AU - Chen, Hui
AU - Hess, Sigrid
AU - Haeberle, Jan
AU - Pitikaris, Sebastian
AU - Born, Philip
AU - Güner, Alper
AU - Sperl, Matthias
AU - Tekkaya, A. Erman
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
KW - Hot stamping
KW - Hydroforming
KW - Metal forming
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=84971613068&partnerID=8YFLogxK
U2 - 10.1016/j.cirp.2016.04.010
DO - 10.1016/j.cirp.2016.04.010
M3 - Journal articles
AN - SCOPUS:84971613068
VL - 65
SP - 273
EP - 276
JO - CIRP Annals - Manufacturing Technology
JF - CIRP Annals - Manufacturing Technology
SN - 0007-8506
IS - 1
ER -