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Effect of forming sequence on product straightness and springback in roll forming
conference contribution
posted on 2014-01-01, 00:00 authored by Buddhika Abeyrathna, Bernard RolfeBernard Rolfe, Peter HodgsonPeter Hodgson, Matthias WeissMatthias WeissIn roll forming a given profile, it is well-know that the selection of increments in deformation
in each pass can influence shape defects in the final product. In this work, the forming of a simple vee-channel
in a dual phase steel sample was studied. Four different roll pass designs were used and the distribution of
edge strain in the flange measured using electrical resistance strain gauges. Bow and springback were
measured for each setting.
It was found that, as expected, the greatest peak strain at the edge of the flange occurred where the bend angle
increment was greatest. For uniform bend angle increment, bow was least, while for springback, the setting
that gave the greatest increment in strain in the last two passes resulted in the least springback. In this work,
those settings that had the highest strain gradients at the start and the end of the process resulted in the greatest
bow.
in each pass can influence shape defects in the final product. In this work, the forming of a simple vee-channel
in a dual phase steel sample was studied. Four different roll pass designs were used and the distribution of
edge strain in the flange measured using electrical resistance strain gauges. Bow and springback were
measured for each setting.
It was found that, as expected, the greatest peak strain at the edge of the flange occurred where the bend angle
increment was greatest. For uniform bend angle increment, bow was least, while for springback, the setting
that gave the greatest increment in strain in the last two passes resulted in the least springback. In this work,
those settings that had the highest strain gradients at the start and the end of the process resulted in the greatest
bow.
History
Event
International Deep Drawing Research Group. Conference (2014 : Paris, France)Series
International Deep Drawing Research Group ConferencePagination
153 - 158Publisher
CetimLocation
Paris, FrancePlace of publication
[Lyon, France]Start date
2014-06-01End date
2014-06-04Language
engPublication classification
E Conference publication; E1 Full written paper - refereedCopyright notice
[2014, Cetim]Title of proceedings
IDDRG 2014 : Innovations for the sheet metal industry : Proceedings of the International Deep Drawing Research Group Conference 2014Usage metrics
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