METHOD FOR IMPROVING THE RESISTANCE TO EMBRITTLEMENT DUE TO HYDROGEN IN WELDED JOINTS

摘要

ABSTRACT OF THE DISCLOSURE:The invention is concerned with a method of improvingthe resistance to hydrogen embrittlement of welded joints incarbon steels and low-alloy structural carbon steels. Themethod of the invention comprises creating in the weld zone agalvanic couple such that hydrogen ions are discharged ontothe welded seam while the latter is protected from the hydrogenaction, by using for the welding operation a steel welding wirecontaining nickel and a metal selected from the group consistingof chromium and molybdenum, the nickel content of the wire beinglower than the chromium or molybdenum content of the wire buthigher than the nickel content of the steel to be welded.