Macro-and Microscopic Simulation of Ring Rolling for Aluminum Alloy Thin-walled Special-shaped Section Ring

Ring rolling is an advanced plastic forming technology for seamless ring-shaped components. At present, it is difficult to achieve near-net-shape manufacturing of aluminum alloy thin-walled ribbed cone-shaped components. For 2A14 aluminum alloy thin-walled special-shaped cross-section rings, the establishment of its The finite element model of the macro-micro coupling analysis of the rolling forming, the rectangular cross-section ring is selected as the blank, and the optimized rolling pass is obtained based on the finite element simulation, and the initial temperature of the blank and the core roll feed speed are investigated for the material formability and micro The influence law of the structure evolution, the process parameters of ring rolling with uniform microstructure and good hole filling are obtained. The temperature of the ring blank is 470℃, the feed speed of the core roll is 1.2mm/s, and the rotation speed of the main roll is 30 r/min. The reduction speed of the upper cone roller is 0.6 mm/s as the optimal process parameter, which can meet the requirements of 2A14 aluminum alloy special-shaped cross-section rolling/formability control, and can provide theoretical guidance for actual production.