The rolling-extrusion technique for the mass production of variable wall thickness cylinder parts was put forward for reducing the machining time and increasing the material utilization. In this process,material was formed by means of three passively rotational tools. A coupled thermal-mechanical rigid-viscoplasticity FEM model for rolling-extrusion of variable thickness cylinder parts was developed based on the Deform-3D software. The distribution of equivalent strain field,equivalent stress field, tempera...
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