Flexible extendable backing shield for welding reactive metals

Details Flexible extendable backing shield for welding reactive metals Flexible extendable backing shield for welding reactive metals

1988-04-20

1989-09-12

Shaw, Clifford C.

Electric heating

Metal heating

Nonatmospheric environment at hot spot

219136, 21913742, B23K 916

Patent

active

048662364

ABSTRACT:
A flexible extendable backing shield for use with the welding of reactive metals such as titanium. The backing shield provides a means for selectively distributing the inert gas along the length of the shield and then diffusing the inert gas to the root side of the weld to prevent oxidation and embrittlement of the weld root. The backing shield is of modular configuration so that a plurality of the devices can be readily connected together to shield a variety of complex shapes.

REFERENCES:
patent: 2918563 (1959-12-01), Ternisien et al.
patent: 3450857 (1967-01-01), Webb
patent: 3875364 (1975-04-01), Boyett
patent: 4599505 (1986-07-01), Lukens et al.
Welding Handbook, 7th Edition, vol. 4, pp. 451, 452, American Welding Socy, Miami, Fla. 33126.

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