Research on a Low-Cost, Low-Waste Method for Surface Flatness Improvement of WAAM Components Based on Tungsten Inert Gas Arc Remelting (TIGAR).

Wire-arc additive manufacturing (WAAM) has fully empowered the design and manufacturing of metals with its unparalleled efficiency and flexibility. However, the process has relatively poor shape control capabilities, often requiring machining post-processing. This study explores a tungsten inert gas arc remelting (TIGAR) process to improve the surface flatness of WAAM components at a low cost and significantly reduce machining waste (up to 76%), which is crucial for the sustainable development of the process.