Invention Grant
- Patent Title: Wellsite hardfacing with distributed hard phase and method of using same
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Application No.: US14860506Application Date: 2015-09-21
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Publication No.: US09909395B2Publication Date: 2018-03-06
- Inventor: Ying Wang , Jiinjen Albert Sue
- Applicant: National Oilwell DHT, L.P.
- Applicant Address: US TX Houston
- Assignee: NATIONAL OILWELL DHT, L.P.
- Current Assignee: NATIONAL OILWELL DHT, L.P.
- Current Assignee Address: US TX Houston
- Agency: Conley Rose, P.C.
- Main IPC: E21B41/00
- IPC: E21B41/00 ; B23K10/02 ; B23K26/34 ; B23K26/00 ; C23C4/129 ; C22C38/40 ; C22C38/02 ; C22C38/04 ; C22C38/44 ; C22C38/50 ; C22C38/48 ; C22C38/32 ; C22C38/00 ; C22C19/07 ; B23K35/32 ; C23C4/06 ; C22C29/06 ; E21B10/46 ; B23K103/04 ; B23K103/16 ; B23K103/00

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.
Public/Granted literature
- US20170081944A1 WELLSITE HARDFACING WITH DISTRIBUTED HARD PHASE AND METHOD OF USING SAME Public/Granted day:2017-03-23
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