Process and gaseous mixture for arc welding of aluminium compone

Details Process and gaseous mixture for arc welding of aluminium compone Process and gaseous mixture for arc welding of aluminium compone

1996-09-05

1997-09-16

Shaw, Clifford C.

Electric heating

Metal heating

Nonatmospheric environment at hot spot

219137WM, B23K 9167

Patent

active

056677030

ABSTRACT:
The arc welding, with a refractory electrode, using alternating current, is performed with a gaseous protective mixture including at the location of the weld, at least 50%, typically between 60 and 80% of helium and at least 300 vpm, typically between 400 and 800 vpm, of nitrogen, the remainder being argon.
Application to manual or automatic welding of aluminium components.

REFERENCES:
patent: 5210388 (1993-05-01), Farwer
patent: 5210389 (1993-05-01), Farwer
M.M. Nerodenko et al., "Niobium Alloys Welded in Helium with Nitrogen Added", Automatic Welding, vol. 31, No. 10, Oct. 1978, pp. 3-6.
Taiichiro Mantani et al., "Addition of nitrogen to the shield gas (argon- helium) in MIG [metal inert gas]welding of aluminum alloys", Chemical Abstracts, vol. 72, No. 12, Mar. 1970, Abstract No. 58440.

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