Sealed laminated structure

Patent metadata

Field	Value
Publication number	US-9963798-B2
Application number	US-201514797700-A
Country	US
Kind code	B2
Filing date	Jul 13, 2015
Priority date	Aug 10, 2012
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

Various embodiments include a sealed laminated metal structure. This laminated metal structure has a metal layer, where the metal layer has a first surface and an opposite second surface. A material is laminated on each of the first and second surfaces of the metal layer. In some cases, the laminated metal structure is removed from a larger laminated sheet of metal. The laminated metal structure is subjected to alternating current electrolytic deburring and cleaning to remove any burrs along the perimeter edge. After deburring and cleaning, a sealer, which is a phosphate compound, is deposited on the perimeter edge of the laminated metal structure where the metal is exposed using alternating current.

First claim

What is claimed is:

1. A sealed laminated metal structure comprising:
a lamination including a metal layer, the metal layer having a first surface and an opposite second surface;
a material laminated on each of the first and second surfaces of the metal layer, wherein the lamination is removed from a larger laminated sheet of metal, the lamination having a perimeter edge with an exposed portion of the metal layer positioned at least partially along the perimeter edge, and the lamination being subjected to alternating current electrolytic deburring and cleaning to remove any burrs along the perimeter edge; and
a sealer comprising a phosphate compound deposited on an exposed portion of the metal layer, wherein the phosphate compound comprises one of zinc phosphate or manganese phosphate.

2. The sealed laminated metal structure according to claim 1 , wherein the material laminated to each of the first surface and the second surface of the metal layer comprises an insulation coating, and the sealer is further applied to the exposed portion of the metal layer of the laminated metal structure through the insulation coating as a result of the alternating current electrolytic deburring and cleaning.

3. The sealed laminated metal structure of claim 1 , wherein the sealer further includes a product yielded from one of an alternating current electrolytic deposition or an alternating current electrolytic conversion.

4. The sealed laminated metal structure of claim 1 , wherein the zinc phosphate or manganese phosphate of the sealer is applied by an alternating current electrolytic deposition.

5. A sealed laminated metal structure comprising:
a lamination comprising a metal layer, the metal layer having a first surface and an opposite second surface;
a first electrically insulative coating laminated onto the first surface of the metal layer;
a second electrically insulative coating laminated onto the second surface of the metal layer, the lamination having a perimeter edge with an exposed portion of the metal layer positioned at least partially along the perimeter edge, wherein the lamination is subject to alternating current electrolytic deburring and cleaning to remove burrs from the perimeter edge thereof; and
a sealer comprising a zinc phosphate or a manganese phosphate compound deposited on the perimeter edge and the exposed portion of the metal layer.

6. The sealed laminated metal structure of claim 5 , wherein the first electrically insulative coating entirely covers the first surface of the metal layer, the second electrically insulative coating entirely covers the second surface of the metal layer, and wherein the sealer entirely covers the perimeter edge and the exposed portion of the metal layer therein.

7. The sealed laminated metal structure of claim 5 , wherein one of the first or second electrically insulative coatings includes one of a C3 coating material or a C5 coating material.

8. The sealed laminated metal structure of claim 5 , wherein each of the first and second electrically insulative coatings includes a multi-layer coating material.

9. The sealed laminated metal structure of claim 5 , wherein the sealer contacts the exposed portion of the metal layer, the exposed portion of the metal layer having been exposed by application of alternating current electrolytic deburring and cleaning.

10. The sealed laminated metal structure of claim 5 , wherein the perimeter edge of the metal layer is free of burrs thereon.

11. The sealed laminated metal structure of claim 5 , further comprising a transient electrode separated from the lamination by an electrolyte.

Assignees

• Gen Electric

Inventors

• Luo Yuefeng
• Adis William Edward
• Jones Michael Lewis

Classifications

• C25F3/06

  of iron or steel · CPC title

• C25F3/02

  Etching · CPC title

• C25D11/36

  Phosphatising · CPC title

• C25D9/08

  by cathodic processes · CPC title

• B23H9/02 Primary

  Trimming or deburring {(B23H9/003 takes precedence)} · CPC title