Hot reduced coil tubing and a method for forming same

Details Hot reduced coil tubing and a method for forming same Hot reduced coil tubing and a method for forming same

B - Operations, Transporting

21

C

B21C 37/08 (2006.01) B21B 17/14 (2006.01)

Patent

CA 2595320

Continuous coil tubing (100) made from shorter lengths of flat metal strip (26) which are spliced end-to end and formed into tubular form (104) and seam welded and thereafter introduced into a forging or hot reduction process (106) . Finished coil tubing is withdrawn from the process at a faster rate than flat metal strip is fed into the process. Welds made to the flat metal strip blend into and substantially disappear from the finished coil tubing.

L'invention concerne un tube en spirale continu (100), fabriqué avec des longueurs plus courtes d'une bande métallique plate (26) épissées de bout en bout, réalisées en une forme tubulaire (104) et soudées en continu préalablement à leur introduction dans un appareil de forgeage ou de réduction à chaud (106). Le tube en spirale fini est retiré de l'appareil plus rapidement que la bande métallique plate n'était alimentée dans l'appareil. Des soudures réalisées sur la bande métallique plate se fondent et disparaissent sensiblement du tube en spirale fini.

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