Method of providing a corrosion barrier between dissimilar metals with an epoxy insulator

Patent metadata

Field	Value
Publication number	US-9604676-B2
Application number	US-201313967670-A
Country	US
Kind code	B2
Filing date	Aug 15, 2013
Priority date	Aug 15, 2013
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A method for providing a corrosion-resistant barrier between bolted dissimilar metals comprising the steps of disposing epoxy adhesive tape on at least one of a first and second metal member, curing the epoxy adhesive tape, applying a corrosion-resistant layer to the first and second metal members, and bolting the first and second metal members together such that the cured epoxy adhesive tape is positioned between the first and second metal members.

First claim

What is claimed is:

1. A method for providing a corrosion-resistant barrier between bolted dissimilar metals comprising the steps of:
disposing film epoxy adhesive directly on a first metal member, wherein the film epoxy adhesive is an insulator;
curing the film epoxy adhesive to define a cured film epoxy;
applying a corrosion-resistant layer directly to the first metal member and a second metal member, wherein the corrosion-resistant layer is free of deposition over the cured film epoxy, wherein the corrosion-resistant layer applied to the first metal member does not adhere to the cured film epoxy;
exposing the cured film epoxy through portions of the corrosion-resistant layer that are deposited onto the first metal member; and
bolting the first metal and second metal members together such that the cured film epoxy is positioned directly between and separates the first metal and second metal members.

2. The method of claim 1 , wherein the first metal member is aluminum.

3. The method of claim 2 , wherein the second metal member is steel.

4. The method of claim 1 , wherein the corrosion-resistant layer is a cured electro-coat layer.

5. The method of claim 1 , wherein the film epoxy adhesive is cured for approximately 20 minutes at approximately 165° C.

6. The method of claim 1 , wherein the cured film epoxy is an electrical insulation, and wherein the corrosion-resistant layer applied to the first metal member is free of adhesion to the cured film epoxy.

7. The method of claim 1 , wherein the cured film epoxy has a thickness of approximately 0.15 mm-0.4 mm.

Assignees

• Ford Global Tech Llc

Inventors

• Kelley Elaine C
• Starbowski Robert G
• Woodall Robert William
• Danyo Michael William
• Drobnich Duane
• Grima Anthony J
• Lazarz Kimberly Ann

Classifications

• F16B5/02 Primary

  by means of fastening members using screw-thread ({F16B5/0004 takes precedence}; construction of screw-threaded connections F16B25/00 - F16B39/00) · CPC title

• B32B2305/72

  Cured, e.g. vulcanised, cross-linked · CPC title

• B32B2307/206

  Insulating · CPC title

• B32B2038/0076

  Curing, vulcanising, cross-linking · CPC title

• Y10T403/47

  Molded joint · CPC title