SUBMERGED ARC-WELDING METHOD IN MANUFACTURE OF UOE PIPE, AND METHOD FOR MANUFACTURING THE UOE PIPE BY USING THE SAME WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To restrain the occurrence of welding defects such as incomplete penetration and slag inclusion by achieving uniform weld penetration over the whole length of a pipe.;SOLUTION: A distance between a welding electrode and the pipe is measured during welding, and the inclination of the welding electrode is adjusted so as to make the angle of the welding electrode to the pipe constant.;COPYRIGHT: (C)2006,JPO&NCIPI