Robust model-based multicriterial optimization strategies for electron beam welding of Steel 45
Elena G. Koleva, Lilyana S. Koleva
In this paper an experimental study of the geometrical characteristics of the cross-sections of the thermally affected areas obtained by electron beam welding joints of carbon steel grade 45 is made. The thermally affected and the molten zones of the welds of non-stainless steels correspond to the areas where the physical-mechanical properties and the microstructure of the processed material are changed after the processing. The influence of the following welding process parameters: the welding speed, the electron beam current and the focus position, was investigated during the experiments. The geometry of the welds in the cases of a deep penetrating electron beam and narrow thermally affected zone is investigated. Electron beam welding process multicriterial parameter optimization is performed, based on the estimation of regression models and applying the robust engineering approach for production conditions. Thus, the electron beam welding equipment can be tested and specific quality requirements for the welds obtained by electron beam welding can be fulfilled.
Cite this article as:
Koleva E. G., Koleva L. S. Robust model-based multicriterial optimization strategies for electron beam welding of Steel 45. Electrotechnica & Electronica (Е+Е), Vol. 57 (5-8), 2022, pp.72-77, ISSN: 0861-4717 (Print), 2603-5421 (Online)