Patent ID: 8703241
Filing Date: 2014-04-22
Classification: C23C

Abstract:
1. A method of batch hot-dip galvanizing steel parts, wherein the steel parts are a) degreased into an acidic aqueous 10 wt % solution, at room temperature for 10 minutes; b) rinsed into tap-water; c) pickled into HCl 10 wt %, at room temperature for 15 minutes; d) rinsed into tap-water; e) immersed into an aqueous flux solution, based on chlorides and containing bismuth chloride, said aqueous flux solution containing 50-300 g/L ZnCl f) dried in warm air at 60-120° C. and g) hot-dip galvanized into an alloy containing mainly zinc and 0.01 wt %-0.1 wt % of aluminium.