Process and installation for coating a metallic strip continuously with a covering layer
AssigneePhenix Works Societe Anonyme
InventorsAlbert Piedboeuf, Victor Polard, Andre Cornez
Life of this patent
Estimating the term…
Abstract
The metallic strip is displaced in a non-oxidizing gaseous atmosphere above and at a small distance from the surface of the coating bath and in contact with a coating cylinder driven to rotate in a direction opposite the direction of travel of the strip, so as to transfer onto the lower surface of the strip a thick layer of the coating material. Apparatus is arranged downstream of the coating cylinder to produce a jet of non-oxidizing gas directed to extend over the entire width of the strip, so as to adjust to a predetermined value the thickness of the coating layer.
Claims6
A process for coating a metallic strip continuously with a coating layer, in which the strip is displaced in a non-oxidizing gaseous atmosphere above and at a small distance from the surface of the coating bath and in contact with a rotatable coating device, rotating said coating device at a predetermined speed in a direction such that its top moves in a direction opposite to the direction of travel of the strip to apply in one step a thick layer of coating material, adjusting the thickness of the coating layer carried along by the strip downstream of the coating device by applying a jet of a non-oxidizing gas to the strip over the entire width of the strip, and deflecting the strip upwardly about said rotatable coating device.
An installation for coating a metallic strip continuously with a coating layer, comprising a sealed enclosure for containing a coating bath surmounted by a gaseous phase, means to displace the strip in a direction above and at a small distance from the surface of the bath, a coating cylinder adapted to be partially immersed in the bath, such that it contacts and deflects the strip at the point of tangency by a defined distance, said coating cylinder being driven to rotate in a direction such that its top moves in a direction opposite to the direction of travel of the strip, so as to transfer in one step onto the lower surface of the strip a thick layer of the covering material, and means downstream of the coating cylinder to produce a jet of non-oxidizing gas directed to extend over the entire width of the strip, so as to adjust to a predetermined value the thickness of the covering layer.
Dependencies are inferred from the claim text.