Invention Grant
- Patent Title: Glass forming hardbanding material
- Patent Title (中): 玻璃成型加固材料
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Application No.: US12917343Application Date: 2010-11-01
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Publication No.: US08474541B2Publication Date: 2013-07-02
- Inventor: Daniel James Branagan , Brian E. Meacham , William D. Kiilunen , James N. Milloway , Brian D. Merkle
- Applicant: Daniel James Branagan , Brian E. Meacham , William D. Kiilunen , James N. Milloway , Brian D. Merkle
- Applicant Address: US RI Providence
- Assignee: The NanoSteel Company, Inc.
- Current Assignee: The NanoSteel Company, Inc.
- Current Assignee Address: US RI Providence
- Agency: Grossman, Tucker, Perreault & Pfleger, PLLC
- Main IPC: E21B19/16
- IPC: E21B19/16

Abstract:
A drill pipe and a method of applying hardbanding thereto. A hardbanding alloy comprising iron and manganese present in the range of 67 to 87 weight percent (wt. %), niobium and chromium present in the range of 9 to 29 wt. %, and boron, carbon and silicon present in the range of 3 to 6.5 wt. % may be welded around at least a portion of a tool joint circumference. The hardbanding alloy may exhibit a hardness of 45 Rc to 70 Rc and a wear rate in the range of 0.08 grams to 1.60 grams of mass loss after 6,000 cycles as measured using ASTM G65-04, Procedure A.
Public/Granted literature
- US20110100720A1 Glass Forming Hardbanding Material Public/Granted day:2011-05-05
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