Coating of a metal sheet or strip
AssigneeHydro Aluminium Rolled Products GmbH
InventorsSimon Miller-Jupp, Günter Schubert
Life of this patent
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Abstract
A coating of a metal sheet or strip comprising a lubricant and a protective base material is provided. The lubricant is contained in the protective base material, and the protective base material is at least in part selectively removable. There is also provided a metal sheet or strip capable of forming, in particular of superplastic forming, and having a coating according to the invention at least partially on one or on both sides of the metal sheet and a method for manufacturing a metal sheet or strip according to the invention comprising the steps of providing a metal sheet or strip capable of forming, in particular of superplastic forming, and applying a coating according to the invention.
Claims19
A metal sheet or strip made of aluminum or an aluminium alloy and capable of hot forming or superplastic forming, and having a coating at least partially on one or on both sides of the metal sheet or strip, wherein the coating comprises:
- a lubricant;
- and
- a protective base material;
- wherein the lubricant is contained in the protective base material;
- wherein the protective base material is at least in part selectively removable substantially without removing the lubricant;
- wherein the lubricant comprises graphite, boron nitride, brucite, montmorillonite, mica, muscovite, molybdenum sulfide, polytetrafluoroethylene (PTFE) and/or talcum;
- and
- wherein the protective base material is a polymer matrix comprising polymers of propylene, ethylene, styrene, isobutylene, tetrahydrofurane, methylmethacrylate and/or alphamethylstyrene.
Dependencies are inferred from the claim text.