Projection welding by finite elements method calculation r inż ygm nt ikno mgr inż Szymon owie ki-Instytut Spawalnictwa, Gliwice, dr inż igniew artnik dr inż ieław erl kiewicz-Politechnika Wrocławska. a tract The article presents the results of the optimisation of projection welding of 1.5 mm thick DX53 steel grade sheets (incomplete projection) carried out with the help of a pneumatic electrode pressure system. The research-related FEM calculations were made using the SORPAS software. Welding process pre-set parameters were changed in a wide range of a) welding current (8kA-12kA), electrode pressure force (110dan-440dan) (from 50% to 200% of the nominal value); welding time being 300ms. The results obtained, depending on the pre-set parameters (welding current, electrode pressure force) are presented in the form of tables as well as the images of temperature distribution and of the weld nugget graphic analysis. The presentation of the results was prepared using the STA-TISTICA data analysis software.
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