Connecting element for a tubular component overlaid with a metallic composite deposit and method of obtaining such element

Patent metadata

Field	Value
Publication number	US-2016208562-A1
Application number	US-201415023605-A
Country	US
Kind code	A1
Filing date	Sep 11, 2014
Priority date	Oct 2, 2013
Publication date	Jul 21, 2016
Grant date	—

Abstract

A connecting element for a tubular component, the connecting element being overlaid with a coating including a principal layer constituted by a nickel-phosphorus alloy, a tubular component including one or more such connecting elements, and a method for producing such a connecting element.

First claim

1 - 21 . (canceled)

22 . A connecting element for a tubular component, overlaid with a coating comprising a principal layer constituted by a nickel-phosphorus alloy.

23 . A connecting element according to claim 22 , wherein the phosphorus represents 5% to 13% by weight of the total weight of the nickel-phosphorus alloy.

24 . A connecting element according to claim 22 , wherein the thickness of the principal layer constituted by the nickel-phosphorus alloy is in a range of 5 to 10 μm.

25 . A connecting element according to claim 22 , wherein the thickness of the principal layer constituted by the nickel-phosphorus alloy is in a range of 15 to 35 μm.

26 . A connecting element according to claim 22 , wherein the coating further comprises an additional layer constituted by the nickel-phosphorus alloy comprising particles of one or more solid lubricant compounds, the additional layer being disposed on the principal layer.

27 . A connecting element according to claim 26 , wherein the particles of one or more solid lubricant compounds are selected from particles of polytetrafluoroethylene, talc, mica, boron nitride, silicon carbide, tungsten carbide, tungsten sulphide, molybdenum sulphide and mixtures thereof.

28 . A connecting element according to claim 26 , wherein the phosphorus of the nickel-phosphorus alloy comprising the particles of one or more solid lubricant compounds represents 5% to 13% by weight of the total weight of the nickel-phosphorus alloy comprising the particles of one or more solid lubricant compounds.

29 . A connecting element according to claim 26 , wherein the particles of one or more solid lubricant compounds represent 20% to 35% by volume with respect to the total volume of the nickel-phosphorus alloy comprising the particles of one or more solid lubricant compounds.

30 . A connecting element according to claim 26 , wherein the thickness of the additional layer constituted by a nickel-phosphorus alloy comprising the particles of one or more solid lubricant compounds is in a range of 3 to 13 μm.

31 . A connecting element according to claim 26 , wherein the coating comprises a lubricant layer disposed on the principal layer or on the additional layer when the coating comprises the additional layer.

32 . A connecting element according to claim 31 , wherein the lubricant layer is selected from a grease, a semi-solid lubricant layer or a solid, dry lubricant layer comprising one or more solid lubricant particles in a resin.

33 . A connecting element according to claim 22 , which is a threading.

34 . A connecting element according to claim 22 , which is a sealing surface.

35 . A connecting element according to claim 22 , which is an abutment shoulder.

36 . A tubular component comprising one or more connecting elements as defined in claim 22 .

37 . A tubular component according to claim 36 , wherein the one or more connecting elements is a threading.

38 . A tubular component according to claim 26 , wherein the one or more connecting elements is a sealing surface.

39 . A tubular component according to claim 36 , wherein the one or more connecting elements is an abutment shoulder.

40 . A method for obtaining a connecting element as defined in claim 22 , comprising depositing the principal layer and the optional additional layer by autocatalytic deposition.

41 . A method according to claim 40 , further comprising posterior treatment at a temperature in a range of 250° C. to 300° C.

42 . A method according to claim 40 , further comprising posterior treatment at a temperature in a range of 300° C. to 600° C.

Assignees

• Vallourec Oil & Gas France
• Nippon Steel & Sumitomo Metal Corp

Inventors

• Millet Cecile

Classifications

• C10N2050/08

  Solids · CPC title

• C10N2080/00

  Special pretreatment of the material to be lubricated, e.g. phosphatising or chromatising of a metal · CPC title

• C10N2020/06

  Particles of special shape or size · CPC title

• C10N2040/34

  Lubricating-sealants · CPC title

• C10M2201/053

  used as base material · CPC title