Method for fixing stopper ring to pipe spigot

Details Method for fixing stopper ring to pipe spigot Method for fixing stopper ring to pipe spigot

1994-11-21

1996-05-07

Heinrich, Samuel M.

Metal fusion bonding

Process

Critical work component, temperature, or pressure

22826242, 228169, 228135, 148529, 29890141, B23K 3102, B23K10306

Patent

active

055137946

ABSTRACT:
A method for fixing a stopper ring to the outer periphery of the spigot of a cast iron pipe for preventing separation of the pipe from another pipe. A single or plural annular grooves are formed on the inner periphery of the stopper ring, and a brazing filler material is fitted in the annular groove. The stopper ring with the annular groove in which is fitted the brazing filler material is fitted on the spigot of the pipe. Subsequently, the pipe is ferritically annealed and the stopper ring is simultaneously brazed to the spigot by the heat of annealing.

REFERENCES:
patent: 4815947 (1989-03-01), Okoma et al.
patent: 4902358 (1990-02-01), Napier et al.

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