Abstract
Corrosion-electrochemical investigations into bimetals are conventionally carried out on samples with the carrying layer preliminarily removed. In this work, the liability of welded joints to HSC without removal of the carrying layer is investigated, which has considerably enhanced the information content of the results. A possibility is demonstrated of the application of ANV-70B electrodes and Sv-07Kh25N13 welding wire, developed at the Paton Electric Welding Institute, in the process of welding in an Ar + O2 gas mixture for repairing equipment manufactured from bimetal equipped with a cladding layer of 08Kh13 steel. It is established that the preliminary heating of the bimetal up to 350°C in the welding process with the application of both ANV-70B electrodes and Sv-07Kh25N13 welding wire enhances the resistance of the metal to hydrogen sulfide corrosion cracking.
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