Wire Arc Additive Manufacturing
Wire arc additive manufacturing uses an arc as a heat source to deposit welding wire layer by layer. It is known for high deposition rates and is well suited for producing large components.
Physical-Chemical Mechanism of Action
The arc generates extreme heat that melts the welding wire. The molten filler metal is transferred to the workpiece and fuses with the base metal. This process is characterized by rapid movement of the wire and torch.
Metallurgical Relevance & Risks in Welding
A too high travel speed can lead to insufficient fusion, while a too low speed can cause overheating and possible cracking. The correct setting is crucial for a high-quality weld.
Workshop Practice & Instructions
Use a travel speed between 1.5 and 3 mm/s. Ensure that the arc is correctly aimed and that the molten droplets hit the workpiece. Always monitor the temperature and the pressure of the shielding gas mixture.