Method and device for coating metal strips

摘要

Method and device for coating a continuously moving metal strip, according to which said strip, after having received its coating, is heated in a heating section, especially for evaporating solvents and for drying or curing the coating, and then cooled in water. A continuous series of sheet-metal elements is provided between the inlet of the tunnel furnace and the outlet of the water cooler so as to make the whole assembly gas-tight, and a device for atmosphere separation by injection of a gas at a temperature above the dew point of the solvents is placed between the outlet of the tunnel furnace and the inlet of the water cooler.

主权项

1. A device for coating a continuously moving metal strip, comprising in succession, in the run direction of the strip, a coating section for depositing a coating on the strip, a heating section for evaporating elements, the elements including a solvent, and for drying or baking the coating, and a cooling section, wherein:
a casing is continuous between the entrance of the heating section and the exit of the cooling section, the casing being gas-tight; and an atmosphere-separating device is placed between the exit of the heating section and the entrance of the cooling section, wherein the atmosphere-separating device is configured to inject a gas into the casing, between the exit of the heating section and the entrance of the cooling section, at a temperature above the dew point of the elements to be evaporated.