Method of cooling weld in steel piping and apparatus therefor

Details Method of cooling weld in steel piping and apparatus therefor Method of cooling weld in steel piping and apparatus therefor

1978-04-18

1980-09-16

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

228 46, 228222, B23K 3106

Patent

active

042231973

ABSTRACT:
A method for cooling a weld in steel piping during butt welding with cooling of the inside comprises, after joining of pipe ends by a root pass on the inside, cooling the junction being welded by subsequent passes with injection of a liquid medium at room temperature from the center of the pipe against the surrounding wall, in a direction between radial and tangential directions relative to the inner pipe surface. An apparatus for practicing the cooling method comprises a rotatable multi-nozzle assembly having a radius of rotation corresponding to the inside diameter of the pipe and is capable of injecting the cooling medium against the inner surface of the pipe, a duct for conducting the cooling medium to the nozzles, and a pumping device for forcing the cooling medium under pressure into the nozzles.

REFERENCES:
patent: 1594321 (1926-07-01), Norman
patent: 2259367 (1941-10-01), Ely et al.
patent: 3125297 (1964-03-01), Copeland et al.
patent: 4152568 (1979-05-01), Yamaguchi et al.
Welding Handbook, Section 3A, Sixth Edition, American Welding Society, N.Y., 1970, TS227, A5hC.3, pp. 44-64.

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