Process for preheating and preparing ferrous metal for...

Details Process for preheating and preparing ferrous metal for... Process for preheating and preparing ferrous metal for...

C - Chemistry, Metallurgy

23

C

117/93

C23C 2/30 (2006.01)

Patent

CA 1072831

SPECIFICATION ABSTRACT OF THE DISCLOSURE A process for simultaneously preheating and preparing a ferrous surface, prior to the depositing thereon of galvanized zinc coatings, replaces conventional fluxing techniques with the step of immersing a ferrous object in a bath of a molten salt or salts. The salts are chosen so that they are liquid at a temperature below that of the zinc coating step. The liquid acts as a non-fuming flux and preheat for the surface. Particular salts include metallic hydroxides and halides.

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