C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
117/118, 32/82
C23C 2/06 (2006.01) B05C 19/02 (2006.01) C23C 2/00 (2006.01)
Patent
CA 1325559
ABSTRACT A method and an apparatus for avoiding, in hot-dip galvanizing of an object, the eventuality that a coating formed on the object in the galvanizing process contains undesirable impurities from the bath. To this end, one or more flows of molten and pure zinc are, in a container, provided which are directed towards a surface region, i.e. the working surface, where the object passes on being immersed in and raised from the bath, respectively. A surface flow is caused to pass from the one edge region of the container, to its other edge region, any possible impurities located on the surface of the bath being displaced from the working surface. The apparatus comprises a pump which, via a discharge pipe supplies molten zinc to a gutter in the upper region of a container. Opposing the gutter, the container is provided with a channel. The gutter and channel, respectively, mutually oppose an upper defining edge over which molten zinc passes. The upper defining edge of the gutter is, as a rule, located higher than the defining edge of the channel.
607184
Evensen Torstein
Lindblom Lars
Autorevir Ab
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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