Using Pyramidal Three-Roll Bending Process to Improve the Quality of Seamed Cylinders

Mecano-welding can efficiently produce cylinders used in various industries. The pyramidal three-roll bending process is commonly used to produce a cylinder with non-seamed gap. However, there is a planar zone near the front and rear ends. This planar zone can be seamed with a welding process. In this paper, a numerical model is proposed to simulate the roll bending process and the welding process so that the geometrical quality of the bent cylinders can be improved. Explicit and implicit solvers are applied to the numerical modeling by using ANSYS/LS-DYNA software. The numerical model can provide a useful tool for design and optimization of the Mecano-welding process.