Method for welding of austenitic stainless steel piping

Details Method for welding of austenitic stainless steel piping Method for welding of austenitic stainless steel piping

1978-04-19

1980-08-19

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

228 46, 228222, B23K 3106

Patent

active

042186048

ABSTRACT:
A method for butt welding of austenitic stainless steel piping with forced cooling of the inside by the flow of a cooling medium comprises the steps of initially welding the pipe ends together by a root pass prior to the inflow of the cooling medium so as to prevent leakage of the medium to the outside, introducing an insert for constraining the flow of the cooling medium into the pipe, and welding the junction while forcing the medium to flow through the space between the insert and the surrounding wall of the pipe, the insert constructed so that it increases the flow velocity of the cooling medium to the maximum in the vicinity of the welded joint being formed.

REFERENCES:
patent: 2259367 (1941-10-01), Ely et al.
patent: 2574003 (1951-11-01), Wymer, Jr.
patent: 3802681 (1974-04-01), Pfeifer
patent: 4152568 (1979-05-01), Yamaguchi et al.
Welding Handbook; Section 3A; Sixth Edition; American Welding Society; N.Y. 1970; p. 44.64.

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