ARC WELDING METHOD Russian patent published in 1996 - IPC

FIELD: process of two-arc welding by non-consumable electrodes with feeding of an addition wire in gas shield medium, that may be used in different industry branches. SUBSTANCE: method comprises steps of placing two non-consumable electrodes with bent working ends along a narrow dressing, realizing their synchronous rotation oscillations at welding process and tracking a length of an arc of one of these electrodes, arranging the electrodes with mutual spacing, equal to 1.5-4 of a width of the dressing; arranging the working end of the front electrode higher, than a level of a working end of a rear electrode with spacing, equal to 4-7 length values of the arc of the rear electrode; upon welding process setting a current of the front electrode, being equal to 0.3-0.5 of a current value of the rear electrode. The method provides welding with the narrow dressing of thick-wall steel products, having width, equal to 6-12 mm, from steels and titanium alloys. EFFECT: enhanced quality of welded seams due to stabilization of the arc of the front electrode. 1 cl, 6 dwg