Outline algorithms for the calculation of forces, prediction of tube failure, changes in wall thickness variation, and check of the process constraints in roller-type cold rolling of tubes are presented. Roller-type cold rolling was simulated to predict the accuracy of rolling and to improve the rolling schedules. Changes in the wall thickness variation were simulated by the finite-element method. The accuracy of the simulation was evaluated: the calculated forces are different from the observed ones by no more than 15%, which validates the algorithms developed. The rolling schedules are analyzed using a previously developed software. The proposed schedules can be used to produce tubes from corrosion-resistant steel.
Keywords
roller-type cold rolling tube accuracy finite-element method process constraintsReferences
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