Design and experiment of V-shaped variable thickness rolling for rolled profiled strips

Abstract

A novel processing method called V-shaped variable thickness rolling (V-VTR), has proposed to produce rolled profiled strips (RPS) by combining numerical simulation with experiment. Purpose to find a design method for accurately calculating roll parameters, and produce RPS with large thickness ratio. The V-VTR is short-term process includes preforming, decreasing, flattening and final passes. The critical minimum angle of roll and its calculation formula are proposed to ensure that metal only flow in TD, and the correctness of this method is proved by simulation and experiment. The metal flow and stress–strain state of angle below and above the critical minimum angle are discussed. Finally, target RPS with thickness ratio of 2:1 is successfully produced for the first time.

Keywords

• Rolled profile strip
• V-shaped variable thickness rolling
• Plastic forming