Electrolytic coating for aluminum components with weld joints
AssigneeHamilton Sundstrand Corporation
InventorsBlair A. Smith, Sophie Lubin
Life of this patent
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Abstract
A coated component includes a metallic body defining an inner volume configured to retain a fluid therein. The metallic body includes a plurality of segments, at least one weld joint attaching the plurality of segments, an outer surface, and an inner surface facing and defining the inner volume. The component further includes a chrome-free protective coating disposed on each of the outer surface and the inner surface. The coating includes an epoxy layer, and an oxide layer disposed between the epoxy layer and the respective outer surface and inner surface.
Claims20
A coated component comprising:
- a metallic body defining an inner volume configured to retain a fluid therein, the metallic body comprising:
- a plurality of segments;
- at least one weld joint attaching the plurality of segments;
- an outer surface;
- and
- an inner surface facing and defining the inner volume;
- and
- a chrome-free protective coating disposed on each of the outer surface and the inner surface, the coating comprising:
- an epoxy layer;
- and
- an oxide layer disposed between the epoxy layer and the respective outer surface and inner surface.
A coated component comprising:
- a metallic body defining an inner volume configured to retain a fluid therein, the metallic body comprising:
- a bracket;
- a weld joint attaching the bracket to the metallic body;
- an outer surface;
- and
- an inner surface facing and defining the inner volume;
- and
- a chrome-free protective coating disposed on each of the outer surface and the inner surface, the coating comprising:
- an epoxy layer;
- and
- an oxide layer disposed between the epoxy layer and the respective outer surface and inner surface.
A method of electrodepositing a protective coating on an aluminum component comprising at least one weld joint, the method comprising:
- immersing the component in an electrodeposition bath;
- configuring the component as a positively-charged anode;
- applying voltage across the component to allow for deposition of the protective coating to form a coated component;
- rinsing the coated component;
- and
- curing the coated component.
Dependencies are inferred from the claim text.