Flux-cored wire core
The flux core is the inner core of the flux-cored wire, made up of powder mixtures. It affects arc stability and slag formation.
Physical-Chemical Mechanism of Action
The flux core consists of a mixture of metals and compounds that are converted to liquid during welding. This liquid forms a slag that stabilizes the arc and supports the welding process.
Metallurgical Relevance & Welding Risks
A missing or poorly developed flux core can lead to arc instability, resulting in voltage fluctuations and possibly irregular weld quality. Additionally, a missing core can hinder slag formation, making welding more difficult and increasing the risk of porosity.
Workshop Practice & Instructions
Make sure the flux core is properly developed. This can be achieved by appropriate voltage settings and a suitable welding speed. Monitor slag formation and ensure stable arc development.