Category:Vapor galvanizing

Va"por gal"va*niz`ing. (metal.)

Defn: a process for coating metal (usually iron or steel) surfaces With zinc by exposing them to the vapor of zinc instead of, as in Ordinary galvanizing, to molten zinc; -- called also sherardizing. Vapor galvanizing is accomplished by heating the articles to be Galvanized together with zinc dust in an air tight receptacle to a Temperature of about 600º f., which is 188º below the melting point Of zinc, or by exposing the articles to vapor from molten zinc in a Separate receptacle, using hydrogen or other reducing gas to prevent Oxidation.