Submerged arc welding flux
Welding flux for submerged arc welding is a granulated auxiliary material that protects the melt from oxidation and influences alloying.
Physical-Chemical Mechanism of Action
The welding powder consists of fine particles that are produced in the air when welding. It covers the arc and the molten pool, prevents oxidation, and contributes to the alloy composition of the structure.
Metallurgical Relevance & Risks in Welding
Without welding powder, the molten pool can oxidize quickly, leading to porosity and poor mechanical strength. The powder also ensures a homogeneous structure and improves resistance properties.
Workshop Practice & Instructions
Use the right amount of welding powder, depending on material and welding process. Regulate the powder flow so that a thin layer falls on the arc. If there is too little or too much powder, you get porosity or irregular structure.