Method for welding tubular members of stainless steel

Details Method for welding tubular members of stainless steel Method for welding tubular members of stainless steel

1979-07-10

1981-01-27

Lazarus, Richard B.

Metal fusion bonding

Process

With pretreating other than heating or cooling of work part...

148127, 228239, B23K 3102

Patent

active

042470374

ABSTRACT:
In welding tubular members of stainless steel, metal is deposited by build-up welding on a portion of the inner surface of each tubular member adjacent an edge thereof where welding gives a heat affection and exposed to a corrosive fluid when in service, and melting a portion of the inner surface of each tubular member in a zone adjacent to the metal deposited by build-up welding and affected by the heat of the build-up welding, said portion being exposed to the corrosive fluid when in service. Following the completion of these two steps, the tubular members of stainless steel are welded at the edges thereof to be joined. The method has the effect of preventing the occurrence of stress corrosion cracking at the inner surface of the piping which is near the joint and exposed to the corrosive fluid.

REFERENCES:
patent: 2249723 (1941-07-01), Orr, Jr.
patent: 2588700 (1952-03-01), Carpenter
patent: 2834097 (1958-05-01), Eickenberg et al.

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