Steel Armor Wire Coatings

Patent metadata

Field	Value
Publication number	US-2017001415-A1
Application number	US-201615264859-A
Country	US
Kind code	A1
Filing date	Sep 14, 2016
Priority date	Aug 27, 2014
Publication date	Jan 5, 2017
Grant date	—

Abstract

A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core.

First claim

What is claimed is:

1 . A process of forming a wire comprising:
coating a ferrous wire core with an interface layer of nickel, molybdenum or a nickel alloy, wherein the interface layer circumferentially surrounds the ferrous wire core; and coating the interface layer with an outer layer.

2 . The process of claim 1 , wherein the ferrous wire core is steel.

3 . The process of claim 1 , wherein the interface layer has a thickness of between 2 and 60 microns.

4 . The process of claim 1 , wherein outer layer has a thickness of between 1 and 50 microns.

5 . The process of claim 1 , wherein the outer layer comprises a zinc alloy, and wherein the zinc allow comprises:
binary Zn—Ni or Zn—Co alloy; or ternary Zn—Ni—Co, Zn—Ni—Mo or Zn—Co—Mo alloy.

6 . The process of claim 1 , further comprising an Fe layer, wherein the Fe layer circumferentially surrounds the interface layer and is circumferentially surrounded by the outer layer.

7 . The process of claim 6 , wherein the Fe layer has a thickness of between 2 and 20 microns.

8 . The process of claim 1 , further comprising a galvanized zinc coating.

Assignees

• Schlumberger Technology Corp

Inventors

• Hughes Trevor
• Varkey Joseph
• Protasov Vadim
• Barmatov Evgeny
• Wanjau Paul

Classifications

• C23C2/38

  Wires; Tubes · CPC title

• B32B15/013

  one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium · CPC title

• C23C16/06

  characterised by the deposition of metallic material · CPC title

• C23C28/021

  including at least one metal alloy layer · CPC title

• B32B15/015 Primary

  the said other metal being copper or nickel or an alloy thereof · CPC title