Numerical simulation on backward deformation of MIG multi-layer and multi-pass welding of thick Invar alloy
| Autor: | Yanhong Wei, Hongbing Liu, Jie Chen, Xiaohong Zhan, Xiangbo Liu, Wenmin Ou |
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| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Work (thermodynamics) Materials science Computer simulation Mechanical Engineering Metallurgy 02 engineering and technology Welding Deformation (meteorology) 021001 nanoscience & nanotechnology medicine.disease_cause Industrial and Manufacturing Engineering Computer Science Applications law.invention 020901 industrial engineering & automation Control and Systems Engineering law Residual stress Distortion Mold Invar alloy medicine Composite material 0210 nano-technology Software |
| Zdroj: | The International Journal of Advanced Manufacturing Technology. 92:1001-1012 |
| ISSN: | 1433-3015 0268-3768 |
| Popis: | Severe distortion often occurs during the production of thick Invar alloy mold using the multi-layer and multi-pass welding method. However, welding angular distortion and residual stress can be reduced greatly with the backward deformation method. The present paper is aimed at researching the appropriate backward deformation for thick Invar alloy welding, using commercial finite element software, MSC.Marc. The transition density grid meshing method was applied in this work. Besides, the double-ellipsoid distribution was employed as the heat source model. Welding process with different backward deformation was simulated. And the simulated angular distortion was compared with actual residual deformation. Both the simulated and experimental results indicated that the welding deformation of Invar alloy samples was efficiently controlled with reserved angle of two degrees. Furthermore, it was proven that the numerical simulation results were in good agreement with the experimental results. |
| Databáze: | OpenAIRE |
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