B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
350/32, 327/40
B23K 37/02 (2006.01) B23K 5/02 (2006.01) B23K 9/025 (2006.01) B23K 9/127 (2006.01) B23K 11/30 (2006.01)
Patent
CA 1244528
ABSTRACT Apparatus and method for accurately aligning and applying the outside longitudinal weld seam, with the weld seam of a section of large diameter thick gauge steel pipe generally after the inside weld has already been made includ- ing support means for maintaining the pipe section in a sta- tionary position, a plurality of adjustable scanning and tracking assemblies mounted at spaced measured stations along the length of the apparatus, each of which include op- tical scanning means whereby the scanning and tracking as- semblies can be centered with respect to the seam weld of the pipe section at the point of scan, guide means connected to each scanning assembly so that the movement thereof causes said guide means to assume a contour corresponding to the longitudinal weld seam, and a welding machine which follows the path of said guide means to thereby apply the outside weld seam in alignment with the weld seam as the pipe is held stationary and the welding machine travels along the length thereof.
492743
Powers Joseph E.
Williamson Calvin C.
Osler Hoskin & Harcourt Llp
Pacific Transcontinental Corporation
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