Internal laser welder for pipeline

Details Internal laser welder for pipeline Internal laser welder for pipeline

1994-10-11

1997-01-14

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

21912164, 21912177, B23K 2608

Patent

active

055936059

ABSTRACT:
An automatic welder is used in an internal welder unit which travels along the interior of a pipeline and welds the abutting ends of the pipe segments together. The automatic welder has a carriage assembly that contains a laser source for producing a laser beam, first and second line-up clamp assemblies for aligning the respective abutting ends of the pipe segments together, at least one laser beam conductor, or alternatively a reflecting surface positioned between said first and second line-up clamp assemblies along the axis of said beam, for directing said beam to the abutting ends of said first and second pipe segments, and a drive for rotating the reflecting surface around the axis of said beam to direct the beam to the abutting ends of said pipe segments for welding said pipe segments together.

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Lur'e, E. S., et al., "Properties of Welded Joints in High-Strength Pipe Steels Produced by Welding With a Continuous CO.sub.2 Laser," Welding Production, vol. 33, No. 9, Sep., 1986, pp. 28-31.
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Russian article, Nov., 1986, ISSN 0039-2448.

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