"FOIL
AND THIN STRIP ROLLING MODEL"
Abstract: A
rollgap model is presented which is suitable for the analysis of foil and thin strip
rolling cases where the ratio of roll flattening to strip thickness is high. This new,
non-circular arc model uses the Jortner influence function for roll deformations and draws
on the work of Fleck et al to achieve similar results with approximately one percent of
the computation time. A simplified model is described for predicting roll force, torque
and slip in mill automation applications.
The investigation describes
typical roll pressure distributions and deformed roll shapes for a wide range of thin
strip applications, including tinplate rolling, tinplate temper rolling, double reduction
rolling and aluminium foil rolling. These results are compared with those predicted by
conventional circular arc rolling theory and measured data. The impact of different
friction laws is demonstrated as part of an investigation into speed dependent effects.
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