

	Welding methods

		Manual Metal Arc Welding - MMA
		Flux Cored Arc Welding - FCAW
		Gas Tungsten Arc Welding - GTAW
		Gas Metal Arc Welding - GMAW
		Submerged Arc Welding - SAW
		Strip welding

Page: Methods / Welding methods / Flux Cored Arc Welding...

Flux Cored Arc Welding - FCAW

Flux cored arc welding is a flexible method that offers high depositions rates, good weldability and excellent weld appearance. FCAW is commonly used for welding thicker sections (>5 mm). The high deposition rate also makes it suitable for overlay welding of mild and low-alloy steel components.

FCA welding is closely related to Gas Metal-Arc Welding (GMAW)

The flux filled wire is automatically fed through the centre of the gun using the same equipment as when GMA-welding. The shielding gas is supplied through the gun and protects the weld pool from oxidation during welding. The flux inside the wire will protect the weld from the atmosphere since it forms a slag which covers the weld.

We recommend a shielding gas of either 75% Ar + 25% C02 or pure C02. The difference between these concerns mainly the weldability, Ar + C02 being the best in horizontal welding and C02 in vertical welding. The FCW process can easily be made automatic or semi-automatic. The method is very economical due to its high weld deposit rate.

Just like any other gas-shielded process FCA welding is sensitive to draughts. Arrangements to avoid draughts should therefore be made when site welding.