Multi-pass spinning of thin-walled tubular part with longitudinal inner ribs
(1. Engineering Training Center, Harbin Engineering University, Harbin150001, China;
2. Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China;
3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, China)
2. Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China;
3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, China)
Abstract: Based on the process experiments, micrography analysis was dedicated to advancing the understanding of plastic flow of the metal in backward ball spinning of thin-walled tubular part with longitudinal inner ribs. Micrography analysis reveals that severe plastic deformation leads to grain refinement, grain orientation and grain flow line of the spun part. Based on rigid-plastic finite element method, DEFORME3D finite element code was used to simulate and analyze multi-pass backward ball spinning of thin-walled tubular part with longitudinal inner ribs. Finite element simulation results involve the distributions of the strain, the shape variation of the inner ribs as well as the prediction of the spinning loading.
Key words: finite element method; ball spinning; longitudinal inner ribs; power spinning; micrography