Method and apparatus for polishing an aluminum-zinc alloy hot-dip coating and the product therefrom
AssigneeSeverstal Sparrows Point, LLC
InventorsHenry N. Hahn, Ronald J. Dutton, Larry F. Crawford
Life of this patent
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Abstract
The present invention is directed to a method of polishing a minimum spangle aluminum-zinc alloy hot-dip coating applied to sheet steel to provide a polished hot-dip coating having a continuous, consistent surface appearance suitable for use in an unpainted condition.
Claims44
1-35. (canceled)
An intermediate steel sheet article having a textured hot-dip aluminum-zinc alloy coating applied to a non-textured steel substrate, the textured alloy coating having an embossed pattern that provides a continuous consistent stainless steel like appearance when polished.
Apparatus for embossing and polishing a metal alloy coating applied to a steel substrate, the apparatus comprising:
- a) a roll mill comprising at least one roll having a textured workface, said roll mill adapted to apply an effective roll force that causes said textured workface to imprint an embossed texture into only the metal alloy coating so that the steel substrate is not imprinted;
- and
- b) polishing apparatus, comprising at least two abrasive belts, each said at least two abrasive belts rotated in a direction parallel to a pass line direction of the imprinted metal alloy coating, each of said at least two abrasive belts rotated at a belt speed greater than 1500 SFPM.
A sheet steel coil, comprising:
- an embossed hot-dip aluminum-zinc alloy coating applied to a non-embossed steel substrate, the embossed alloy coating polished to a continuous consistent stainless steel like appearance from one end to an opposite end of the sheet steel coil.
(canceled)
78-96. (canceled)
Dependencies are inferred from the claim text.