[机] 镀锌

Vapor galvanizing \Va"por gal"va*niz`ing\ (Metal.)
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 600[deg] F.,
which is 188[deg] 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.
[Webster 1913 Suppl.]