Can use flame brazing, good welding I always dry, brass wire + borax

Copper can be welded, and there are many welding methods that can be used:

1, can use carbon electrode argon arc welding for welding, carbon electrode argon arc welding can ensure the welding quality.

2, if the welding piece is not large, can use oxygen-acetylene gas flame welding, with borax and other protective agent, welding is relatively simple and easy, but also can ensure the quality.

Weldment larger oxygen - acetylene flame welding, welding heating when some difficulties, the other as much raw copper to copper zinc alloy, copper, tin, zinc and tin are susceptible to oxidation film in the process of welding repair, stir welding rod can be used to destroy the oxide film, but, still can produce a large number of new oxide film, it will affect the welding quality, cause weld defects, If it is welding on the processing surface, the requirements are more strict, it is not allowed to exist a spot welding defect.

3, the operation of ordinary arc welding is simple, it depends on arc flux to protect the molten pool, produce a large number of welding slag, prevent air intrusion into the molten pool to produce metal oxidation, the current is too large to produce microcracks, the current is too small is easy to produce welding impervious, porosity, slag inclusion.

The main difficulty in welding steel with copper and copper alloys is the tendency to crack in the weld and fusion zone. Practice has proved that in order to guarantee the high crack resistance of the weld, the iron content in the weld should be controlled in the range of 10% ~ 43%.

(1) Welding method and welding material low carbon steel and copper and copper alloy welding, can be respectively used by hand arc welding, submerged arc welding and tungsten argon arc welding. When welding low carbon steel and pure copper, pure copper is used as filler metal material, such as welding rod TCu (T107); Silicon manganese bronze QSI3-1 welding wire is used for tiG welding. When welding low carbon steel with silicon bronze and aluminum bronze, aluminum bronze can be used as filler metal. When stainless steel and copper are welded, nickel or nickel base alloy is used as filling metal material.