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The practical aim of the following study was to develop a new roll pass design (RPD) of the channels (UPN) and introduce it into industrial rolling. The necessity of usage of a charge stock with a greater cross section has caused necessity of an application of the new rolling schedule characterized by large deformations. The investigations are based on an explicit–implicit co-simulation techniques applied in the ABAQUS commercial code. A complete production line containing all passes for forming the section including break-down, intermediate and finishing sequences are modelled. The data of exit section from subsequent pass is imported as the entering material for the next pass. The series of the plastometric tests were performed to obtain characteristic data of the rolled steel, which were required for the subsequent computer calculations. The metal flow in the roll grooves in each stand, separation force and roll torque in each pass are also calculated. It can be concluded that the explicit–implicit co-simulation techniques used in the analysis are an efficient and accurate enough application for the roll pass design of the steel sections.

APPLICATION OF EXPLICIT-IMPLICIT CO-SIMULATION TECHNIQES INto THE ROLL PASS DESIGN OF CHANNELS WITH LARGE DEFORMATIONS