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Method of electrodepositing onto stainless steel

Assignee: Kewanee Oil Co
•
Filing: 1970-09-08
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Granted: 1972-06-13
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Expires: 1990-09-08
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Abstract

Abstract A process by which a metal may be plated on a stainless steel metal substrate whereby the final electro-plated composite possesses greatly improved adherence. Said process involves the electrodeposition of a chromium strike layer on the stainless steel base metal which is then followed by a nickel strike layer prior to plating of said metal. The chromium strike layer may be deposited from any standard chromium electrodeposition plating baths. The nickel strike layer may be deposited from a ''''Woods strike'''' nickel electroplating bath which can be either bromide or chloride. The bromide type is preferred and the composition and operating conditions of said bath comprise: NiBR2 100-800 g./1. HBr 0.1-20% by weight Current Density 5-200 a.s.f. Bath Temperature 60-115* F.

Inventors

  • 👤 Bruce J Garvey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 02:43
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/10; C25D5/12; C25D5/14; C25D3/00; C25D3/02; C25D3/12; C25D5/34; C25D5/36; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 18 words
The method according to claim 1 wherein the stainless steel substrate comprises a high chromium content stainless steel.
Claim 2
Dependent Claim 13 words
The method according to claim 2 wherein the stainless steel substrate is tubular.
Claim 3
Dependent Claim 31 words
The method of claim 1 wherein the nickel electroplating bath comprises approximately 500 g/l of nickel bromide or nickel chloride and approximately 0.4 percent by weight of hydrobromic or hydrochloric acid.

References Cited (Backward Citations)

US2726200A Cited
US2871550A Cited
US3003933A Cited
US2929766A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-06-13 1975-12-13 1976-06-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-06-13 1979-12-13 1980-06-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-06-13 1983-12-13 1984-06-13 $7700.00 Window Closed / Lapsed

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