METHOD OF HEAT-TREATING THIN SHEET COATED WITH ZNAL BY HOT DIP GALVANIZATION

摘要

The invention concerns a method of heat-treating thin sheet which has been coated with zinc and/or aluminium by hot dip galvanization. The invention is characterized in that, immediately after the coating applied to its surfaces in the hot dip bath has hardened, the thin sheet is heated for between 2 and 10 seconds to a temperature which is between 20 and 100~C above the liquidus temperature of the coating material and is then cooled to ambient temperature.