EXTENSION STRIP FOR WELDING BY MEANS OF NON-CONSUMABLE ELECTRODE Russian patent published in 2000 - IPC

FIELD: manufacture of structures with mean and large thickness values. SUBSTANCE: extension strip includes pack of plates arranged on end of welded joint. Pack of plates is enclosed by water-cooled or ceramic casing that may be monolithic or detachable and it is placed on changeable gaskets. Width of plates corresponds to thickness of welded butt. At welding by means of submersible electrode, width of central-zone plates is more than width of other plates of pack. At welding with use of additive, plate arranged along axis of butt is made of additive material. EFFECT: possibility of welding parts with different thickness values, high-quality protection of back side of welded joint, identical chemical composition of welded joint along its length. 5 cl, 5 dwg