Silver copper phosphorus brazing welding electrode and a copper tube with no flux? Which one, or not?
Can not use, but the use of flux, the effect will certainly be better, simple use of flux, usually borax. But the welding copper and silver copper sand is not the same.
The copper tube and the copper tube do not need welding flux when welding the copper tube and the brass piece
The copper phosphorus brazing welding without flux, phosphorus is a reducing agent, reducing the generation of oxidative cuprous oxide, floating on the surface of weld, phosphorus copper electrode with good fluidity, with self fluxing effect. The other to a silver brazing flux.