Flux is a substance that is used to protect the metal from oxidation and other types of corrosion. The flux also plays an important role in vitalizing or softening the metal before it is further worked. When the metal is heated, it loses some of its ductility which is why it needs an extra measure of strength to be able to work on larger projects
The flux serves as a lubricant that allows the metal to flow more easily during hot forging and other processes. It also helps prevent moisture from building up in the metal, which can cause corrosion. Fluxes vary widely depending on the type of project being done and what materials need protection from corrosion or oxidation.
what is flux in metal forging