TWO-ELECTRODE HORIZONTAL FILLET WELDING SUBMERGED ARC WELDING METHOD FOR T-JOINT

摘要

PURPOSE: To provide a two-electrode horizontal fillet welding submerged arc welding method of a T-joint to manufacture a welded wide flange shape with excellent efficiency by achieving the fillet welding under the prescribed welding conditions with a web in the horizontal position. ;CONSTITUTION: In a single layer fillet welding of a T-joint where a web is a thick steel prattle, a web 1 is in the horizontal position, and the fillet welding is achieved under the conditions where the diameter of L-pole wire: 3.2-6.4mm, the diameter of T-pole wire: 3.2-7.0mm, the ratio of the L-pole current to the T-pole current: 0.6-1.0, the voltage of L-pole: VL≤45V, the voltage of T-pole: VT≤50V, the angle of tiltation (a) of l,pole electrode: 3-30°, the angle of tiltation (b) of T-pole: 3-35°, the angle (c) of L-pole electrode: -10 to +10°, the angle (d) of tiltation of T-pole electrode: 0-30°, the distance between L-pole and T-pole: 10-120mm, the shortest distance between the L-pole and the flange: 0-10mm, and the shortest distance between the T-pole and the flange: 1-13mm. The web 1 is the thick steel plate exceeding 16mm and up to 32mm in thickness, and the fillet welding is achieved by the partial penetration method without groove.;COPYRIGHT: (C)1996,JPO