Silver copper welding rod and phosphor copper welding rod welding copper tube with or without flux?

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20/05

Silver copper welding rod and phosphor copper welding rod welding copper tube with or without flux?

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Can do not use, but use flux if the effect will be better, simple use of flux, generally borax.But phosphorous copper and silver copper are different.

Phosphorous copper welding rod welding red copper tube without flux, phosphorus is a reducing agent, can reduce and oxidize cuprous, generate phosphorus oxide floating on the surface of the weld, phosphorous copper welding rod fluidity is good, with self-brazing effect.All other silver and copper electrodes should use flux.

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