WELDING METHOD

摘要

PURPOSE:To perform satisfactorily welding in all attitudes without undercut and overlap by supplying a wire only to the one side of the reference line for oscillated welding according to a groove condition and moving backward a carriage in addition to the forward movement thereof with respect to the oscillation. CONSTITUTION:There is the possibility of generating an undercut 2 or overlap 4 owing to flowing of a bead 3 in three o'clock welding but if a wire is fed only in the stage of up oscillation, the satisfactory beads free from such defects are superposed on each other to assure defectless welding. While the wire is supplied on one side of the oscillation, a carriage is moved partly backward in addition to the forward movement so that the old bead part is reheated and the beads are satisfactorily joined.