Tungsten carbide nickel-chromium alloy hard member and tools using the same
US6368377B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2000 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Sep 21, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/188
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hard member for use as a wear part or a hard insert for a point attack style of tool or a rotary style of tool. The hard member having a composition of between about 5 volume percent and about 40 volume percent binder alloy, and between about 60 volume percent and about 95 volume percent tungsten carbide. The tungsten carbide has an average grain size between about 1 micrometer and about 30 micrometers. The binder alloy comprises an alloy of nickel and chromium wherein the nickel ranges between about 70 weight percent and less than 93 weight percent and the chromium ranges between greater than 7 weight percent and about 30 weight percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.