WAAM as additive technology enables manufacturing of complex products made of metals. Raw materials efficiency is significantly higher compared to conventional processes when manufacturing thin-walled products. When using WAAM anisotropic material properties can be obtained in the product. In the thesis we have focused on production and analysis of thin and thick walls. The produced walls were visually inspected and X-ray examined. From walls we made samples to analyze tensile strength, toughness and samples for microstructure analysis. Fractured samples for toughness were examined on a digital microscope. For manufacturing simple cylindrical forms, we analyzed WAAM process and optimized technological parameters. With these parameters, a series of more complex products without stopping the process was produced. We determined anisotropic mechanical properties, which depended on the orientation or direction of construction and the location of the samples cut-out. In the second part of thesis, we determined welding parameters for continuous welding of products with complex shape and overhang. By choosing the right welding parameters, it was possible to eliminate layer waviness. When constructing a wall with an overhang, we determined the limiting angle at which WAAM is not manageable.
|
