AQUEOUS FLUX FOR HOT DIP METALLIZING PROCESS

摘要

A flux bath and its use in treating ferrous articles prior to their being dipped in a molten aluminum-zinc alloy is disclosed. The flux may be molten bath or used as an aqueous solution which contains from 200 to 750 g/l dissolved solids. The dissolved solids are 91 to 98.5 wt. % zinc chloride, 1.5 to 9 wt. % ammonium chloride and, based on zinc chloride and ammonium chloride, from 0.6 to 3 wt. % fluoride ions.