C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 2/28 (2006.01)
Patent
CA 2270897
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.
L'invention concerne un procédé de traitement thermique de tôle fine recouverte de zinc et/ou d'aluminium par galvanisation à chaud. L'invention se caractérise en ce qu'immédiatement après durcissement du revêtement appliqué sur sa surface dans le bain de galvanisation à chaud, la tôle fine est portée pendant 2 à 10 secondes à une température comprise entre 20 et 100 ·C au-dessus de la température dite "Liquidus" du matériau de recouvrement et est ensuite refroidie pour parvenir à la température ambiante.
Durr Wilhelm
Heiler Hans-Joachim
Hobelheinrich Gunther
Warnecke Wilhelm
Kirby Eades Gale Baker
Thyssen Stahl Ag
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