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The article presents the FEM-based numerical model of the laser beam welding process. The modelling aimed to identify the effect of technological conditions of the laser welding of elements on the heating dynamics and the maximum temperature of elements being joined. The numerical modelling was performed using the SYSWELD software programme. The elements to be joined were a connector and a ring-like...
The paper presents results of the FEM simulation of FSW process. The object of the research was a heat exchanger used for cooling of electrical components of propulsion systems. The tests enabled the obtainment of the field of temperature, stresses and displacements during the process and residual stresses and displacements of welded elements after cooling. Knowledge of the thermal conditions of the...
The article presents the results concerning the repair welding of a long-operated waterwall using the mechanized TIG method. The tests were focused on determining the effect of a repair performed in order to remove cracks in welded joints located along flat bars opening on the tube wall side on the structure and hardness of the heat affected zone (HAZ) of a repair welded joint in the waterwall. In...
The article presents the results of research on overlay brazing and weldbrazing of hot-dip galvanized sheets carried out in order to determine the influence of shielding gas composition and electrode-negative (EN) ratio on the process and properties of overlay brazes and weldbrazed joints. The parameters analysed included joint geometry, wettability, zinc coating oxidation, spatter and porosity.
The article presents results of the FEM simulation involving friction stir welding (FSW) of check valve ball elements. The tests involved the obtainment of temperature fields, information about stresses and displacements during the process and about residual stresses and strains following the cooling of elements welded. The knowledge obtained concerning process thermal conditions and that concerning...
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