Method for preparing pre-coated ferrous-alloy components and components prepared thereby
AssigneeBoeing North American, Inc.
InventorsSteven G. Keener, Kevin T. Ruth
Life of this patent
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Abstract
A ferrous-alloy aircraft structural component such as a fastener is prepared by providing a ferrous-alloy component precursor that is not in its final heat-treated state, and coating with an aluminum-containing, curable organic coating material having a non-volatile portion that is predominantly organic and is curable at about the ferrous-alloy component's tempering temperature. The coated, ferrous-alloy is then tempered to concurrently impart predetermined metallurgical properties to the finished, ferrous-alloy material, and cure the organic, aluminum-containing coating.
Claims14
A method for coating a ferrous-alloy aircraft structural component comprising the steps of:
- providing an aircraft structural component made from a ferrous-alloy precursor having a predetermined heat-treatment temperature;
- subjecting the component to a hardening treatment;
- providing a curable organic coating material having a non-volatile portion that is curable at about the predetermined ferrous-alloy heat-treatment temperature;
- applying the coating material to the component;
- and
- simultaneously curing the coating and the component by heat-treating the ferrous-alloy precursor to a temperature of from about 800 to about 850° F. for a duration of from about 45 to about 75 minutes.
Dependencies are inferred from the claim text.