Cemented carbide cutting tool
US6238148A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Feb 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/27
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a cemented carbide cutting tool made of a tungsten carbide-based alloy comprising 8 to 13 percent by weight of Co and 0.1 to 3 percent by weight of Cr as constituents for forming a binding phase, the balance being tungsten carbide as a constituent for forming a dispersing phase and incidental impurities, the rate of the dispersing phase to the total of the dispersing phase and the binding phase being in a range of 72 to 90 percent by area and the average particle diameter being 1 .mu.m or less according to measurement of an electron microscopic texture; the dispersing phase of the cemented carbide cutting tool made of a tungsten carbide-based alloy comprises a dispersing phase composed of ultra-fine particles dispersed in a matrix and having a particle diameter of 100 nm or less, and the ultra-fine particles comprise a Co based alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.