POSITIONING DEVICE FOR WELDING, WELDING EQUIPMENT AND WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a positioning device for welding, welding equipment and a welding method, by which a flange and a pipe are welded quickly without performing tooling change during welding work regardless of the size of piping with the flange joint.;SOLUTION: The positioning device 2 for welding includes: a table 8 that supports the flange 18, at the center of which a circular through-hole is formed and which is welded to the end of a pipe 17, and that rotates the flange 18 about the center axis; and pawls 10 that are provided on the table 8 to fix the flange 18 to the table 8. The table 8 has an opening part 11 formed in accordance with the through-hole of the flange 18 fixed with the pawls 10. Then, a welding torch 7, for welding the inner surface of the though hole of the flange 18 and the end of the pipe 17, is inserted into the opening part 11.;COPYRIGHT: (C)2013,JPO&INPIT