Glass forming hardbanding material
US8474541B2 · kind B2 · utility
23Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2010 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Jan 3, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.