Direct energy deposition processes that utilize wire feedstock have been deployed to deposit and fabricate near net shape functional metal parts at high deposition rates. Is this just multi-pass welding or is there more to it? Should the material requirements for additive be the same as those defined for welding? Is weld quality the same as part quality? A large metal additive part fabricated using a robotic wire arc additive system will be used to demonstrate the similarities and identify critical differences between essential variables for welding and additive manufacturing. The opportunities for both welding and additive manufacturing to learn and leverage one another to develop unique and novel materials, process controls and further fundamental understanding of metal deposition processes will be outlined.

Subject
Industrial metals, Materials, Optimization, Additives, Welding, Walls, Wiring, Beads, Additive manufacturing, Metals, Heat, Lasers, Deposit corrosion
Keywords:
DED, WAAM, ARC welding, GMAW, CAD, Path planning, Steel, Nickel, Additive manufacturing, 3D printing
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2019
Association for Materials Protection and Performance (AMPP)
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