The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9909395 B1

Date of Patent:

Mar. 06, 2018

Filed:

Sep. 21, 2015

Wellsite hardfacing with distributed hard phase and method of using same

Applicant:

National Oilwell Dht, L.p., Houston, TX (US);

Inventors:

Ying Wang, The Woodlands, TX (US);

Jiinjen Albert Sue, The Woodlands, TX (US);

Assignee:

NATIONAL OILWELL DHT, L.P., Houston, TX (US);

Attorney:

Conley Rose, P.C.

Primary Examiner:

Archene Turner

Int. Cl.

CPC ...

E21B 41/00 (2006.01); B23K 10/02 (2006.01); B23K 26/34 (2014.01); B23K 26/00 (2014.01); C23C 4/129 (2016.01); C22C 38/40 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/44 (2006.01); C22C 38/50 (2006.01); C22C 38/48 (2006.01); C22C 38/32 (2006.01); C22C 38/00 (2006.01); C22C 19/07 (2006.01); B23K 35/32 (2006.01); C23C 4/06 (2016.01); C22C 29/06 (2006.01); E21B 10/46 (2006.01); B23K 103/04 (2006.01); B23K 103/16 (2006.01); B23K 103/00 (2006.01);

U.S. Cl.

CPC ...

E21B 41/00 (2013.01); B23K 10/027 (2013.01); B23K 26/0006 (2013.01); B23K 26/34 (2013.01); B23K 35/327 (2013.01); C22C 19/07 (2013.01); C22C 29/06 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/32 (2013.01); C22C 38/40 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C23C 4/06 (2013.01); C23C 4/129 (2016.01); E21B 10/46 (2013.01); B23K 2203/05 (2015.10); B23K 2203/16 (2013.01); B23K 2203/52 (2015.10);

Abstract

A hardfacing disposable on a surface of a component, such as a wellsite component, is disclosed. The hardfacing comprises a surface portion and a bottom portion with a segregation line defined therebetween. The surface portion and the bottom portion each include a matrix phase including a matrix composition made of a metal alloy and a hard phase distributed in the matrix phase. The hard phase may include an abrasion-resistant composition made of a hard material (e.g., vanadium carbide). The surface portion has a first concentration of the abrasion-resistant composition and the bottom portion has a second concentration of the abrasion-resistant composition with the first concentration being greater than the second concentration such that a wear resistant surface is defined on the surface of the component.

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