Experimental Validation of a Numerical Method that Predicts the Size of the Heat Affected Zone. Optimization of the Welding Parameters by the Taguchi’s Method
| Autor: | Antonio Portoles, M. Estrems, J. Serna, Eusebio J. Martínez-Conesa, José L. Meseguer-Valdenebro, Valentín Miguel |
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| Rok vydání: | 2015 |
| Předmět: |
0209 industrial biotechnology
Heat-affected zone Materials science business.industry Gas tungsten arc welding Numerical analysis Metallurgy 02 engineering and technology Welding Mechanics 020501 mining & metallurgy Gas metal arc welding law.invention Taguchi methods 020901 industrial engineering & automation 0205 materials engineering law Arc welding business Thermal energy |
| Zdroj: | Transactions of the Indian Institute of Metals. 69:783-791 |
| ISSN: | 0975-1645 0972-2815 |
| DOI: | 10.1007/s12666-015-0554-4 |
| Popis: | This work outlines the experimental validation of a numerical method which determines the size of the heat affected zone (HAZ) in a low carbon steel plate using the gas metal arc welding technique. The welding parameters match between the experimental and numerical simulations. The later allows the calculation of the weld beads and temperature fields from which the size of the HAZ can be inferred. This size from numerical simulations compares quite well with the experimentally measured HAZ from the metal grain macrostructure. A relationship between the bead size and the thermal energy source parameters, defined by the Goldak’s double ellipsoid, is found. Finally, the size of the HAZ is optimized by Taguchi’s method, which make use of the signal-to-noise ratio and the analysis of variance to obtain the influence of the parameters on the size of HAZ. The numerical code can be used for other electric arc welding techniques as GTAW or FCAW. |
| Databáze: | OpenAIRE |
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