Lateral spread during slab rolling

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Abstract
The nature of deformation in the roll gap during single pass rolling was investigated and it was found that the metal flow is complex. It was also found that the edge profile changes from a double barrel profile near the entry to a convex profile near the exit depending upon the deformation conditions. The factors affecting spread in the lateral direction were investigated in two commercial Al–Mg alloys: AA 5056 and AA 5083. The results of over 120 carefully controlled laboratory hot rolling tests were analysed with the help of the main existing spread formulae. In view of the inability of these formulae to predict closely the spread, a new formula has been derived from the experimental results. MST/961

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