The purpose of back-up rolls in a 4-high rolling-mill stand is to provide lateral stiffness to the work rolls to reduce bending and thereby minimize strip shape and profile defects. The maximum and minimum diameters of the work rolls are limited by considerations of roll force and roll wear. However, similar criteria are not availablefor determining the choice of back-up roll diameters. The effect of changing back-up roll diameter on strip shape and related parameters, with the aim of defining a range of possible diameters for any specific mill, is investigated.
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References
1.
EDWARDSW. J. and SPOONERP. D.: ‘Automation of tandem mills’, (ed. BryantG. F.), 176; 1973, London, The Iron and Steel Institute.
