Flux-cored wire
Flux-cored wire consists of a tubular steel wall filled with powder. It protects during welding and increases deposition rate.
Physical-Chemical Mechanism of Action
The flux-cored wire consists of a tubular steel wall filled with powder. During welding, the powder forms a protective layer and absorbs oxygen, which helps reduce porosity. The powder also increases the deposition rate through improved heat conduction.
Metallurgical Relevance & Welding Risks
The flux-cored wire prevents oxygen from entering the weld, which reduces porosity and increases strength. However, incorrect selection or handling can lead to uneven deposition, resulting in cracks or irregularities in the weld.
Workshop Practice & Instructions
Use flux-cored wire for welding processes with high oxygen content. Choose the right powder type and content according to the steel to be welded. Make sure it is applied correctly and avoid overdoing the powder, as this can lead to uneven deposition.