The effect of the drawbead dimensions on the weld-line movements in the deep drawing of tailor-welded blanks

Citation
Ym. Heo et al., The effect of the drawbead dimensions on the weld-line movements in the deep drawing of tailor-welded blanks, J MATER PR, 113(1-3), 2001, pp. 686-691
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
ISSN journal
0924-0136 → ACNP
Volume
113
Issue
1-3
Year of publication
2001
Pages
686 - 691
Database
ISI
SICI code
0924-0136(20010615)113:1-3<686:TEOTDD>2.0.ZU;2-L
Abstract
Tailor-welded blanks made by the laser welding process with different thick ness combinations were applied in the deep drawing process without drawbead s to investigate their forming behavior. The purpose of this study is to in vestigate quantitatively the effects of the drawbead dimensions on the weld -line movements in the deep drawing of the tailor-welded blanks. Square bla nks have been used and five different circular drawbeads of 0.0, 1.5, 2.0, 3.0, 4.0, 5.0 mm radius and also no drawbead were installed in the blank ho lder in the experimental apparatus. The differences in the weld-line moveme nts and the tendencies of the thickness strain distributions were investiga ted by experimental and numerical methods. The results of the weld-line mov ement show that the smaller the radius of the drawbead installed, the large r are the values of the movements. Also it is shown that for thickness stra in along the central and diagonal direction that the larger is the dimensio n of the drawbead, the larger are the values of maximum thickness strain. T he drawbead adds additional restraining forces to the blank, hence the move ment of the weld line could be controlled by adequate drawbead installation . (C) 2001 Published by Elsevier Science B.V.