Question

Why do we prefer DC welding for Non ferrous metals?

Answer 1

Answer:

DC polarity is used in most welding applications. It produces a smoother welding output compared to AC. It creates a more stable arc, easier welding and less spatter. You can also either use DC negative for faster deposition rates when welding thin sheet metal or use DC positive for more penetration into the steel.Today, nonferrous metals are used in various welding constructions for diverse industrial applications. However, their weldability is quite different from that of steel, due to specific physical and metallurgical characteristics.