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Effect of roller leveling on the bending behaviour of aged steel strip

conference contribution
posted on 2012-01-01, 00:00 authored by Jascha Marnette, Bernard RolfeBernard Rolfe, Peter HodgsonPeter Hodgson, Matthias WeissMatthias Weiss
The common grades of steel used in roll forming are: hot rolled carbon steel, high strength low alloy and recovery annealed cold rolled sheet. These steels are prone to ageing and are often skin passed and/or roller leveled to eliminate ageing as it can lead to problems in forming. In roll forming, shape defects such as bow, twist and camber are considered to be related to very small plastic strains in the longitudinal direction and hence knowledge of the material properties in the elastic plastic transition range is necessary if the process is to be modelled accurately. Previous studies with aluminium have indicated that skin pass rolling can lead to residual stresses in the strip. In this work, the study was extended to aged carbon steel and to the effect of roller leveling on both aged material and strip that had been given a light cold rolling to simulate a skin pass treatment. The results suggest that roller leveling reduced the magnitude of residual stresses resulting from skin pass rolling.

The significant differences observed between tensile and bending test results, at and near, the elastic plastic transition reinforces the need to consider bending properties when assessing the effect of prior processing on strip for roll forming.

History

Event

International Conference on Metal Forming (14th : 2012 : Krakow, Poland)

Pagination

699 - 702

Publisher

Wiley-VCH

Location

Krakow, Poland

Place of publication

[Krakow, Poland]

Start date

2012-09-16

End date

2012-09-19

Language

eng

Publication classification

E1 Full written paper - refereed

Copyright notice

2012, Wiley

Editor/Contributor(s)

K Mori, M Pietrzyk, J Kusiak, J Majta, P Hartley, J Lin

Title of proceedings

Metal Forming 2012 : Proceedings of the 14th International Conference on Metal Forming

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