Surface pre-treatment method for pre-coated heat-treatable,...

Details Surface pre-treatment method for pre-coated heat-treatable,... Surface pre-treatment method for pre-coated heat-treatable,...

2004-11-05

2010-02-02

Zimmerman, John J (Department: 1794)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C428S457000, C427S384000, C148S537000

Reexamination Certificate

active

07655320

ABSTRACT:
The present invention relates to the use, in a pre-coating process, of a flash plating, without a subsequent chromate seal, as a surface pre-treatment for a ferrous-alloy substrate prior to applying a corrosion-inhibiting coating to improve the overall corrosion protection of the pre-treatment component. Preferably the ferrous alloy is a heat-treatable, precipitation-hardenable stainless steel and the pre-treatement is a cadmium flash plate or a zinc-nickel alloy flash plate.

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