A method for manufacturing a metal sheet with a ZnAl coating and with optimised drying, corresponding metal sheet, part and vehicle

摘要

The present invention provides a method for manufacturing a metal sheet. In this method, at least one of the following equations is satisfied: Z d + 18   ln  ( Z d ) 8   ln  ( P V ) - 27.52 ( A ) fO 2 2.304 · 10 - 3 ( 27.52 + Z d + 8   ln  ( V P  ( Z d ) 2.25 ) ) 2 ( B ) wherein: Z is the distance between the metal sheet and the nozzle along the main ejection direction (E), Z being expressed in mm, d is the average height of the outlet of the nozzle along with the running direction of the metal sheet in front of the nozzle, d being expressed in mm, V is the running speed of the metal sheet in front of the nozzle, V being expressed in m·s1, P is the pressure of the wiping gas in the nozzle, P being expressed in N·m2, and fO2 is the volume fraction of oxygen in the wiping gas. A metal sheet, part and land motor vehicle are also provided.