Electrode coated a low emission of fumes and hexavalent chromium for the welding of stainless steels

摘要

Electrode coated with a low emission of fumes and hexavalent chromium be used for the welding of the stainless steels. The coated electrode is formed of a metal central core made of steel or stainless steel, coated with a coating solid forms a coating on said core, said coating containing at least one compound based on lithium and being free of the compound based on sodium and potassium, such as the alumino - silicates.selon the invention, the coating comprises from 5 to 45% by weight of at least one compound based on lithium or of 0.2 to 3% of lithium coming from at least one compound based on lithium, at least one agent for the spinning is free of na or / and k, at least one binder containing lithium, approximately 10 to 55% by weight of one or more metallic elements in the form of a ferroelectric - alloys or elements alone, and a total proportion in the coating of na and k is between 0 and 1 by weight, the% by weight of each compound in question being expressed with respect to the total weight of coating of the electrode.