Method of using Si.sub.3 N.sub.4.Y.sub.2 O.sub.3.SiO.sub.2 ceramic system for machining cast iron
US4227842A · kind A · utility
32Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1979 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Dec 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/303752
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for continuous or interrupted machine cutting of solid cast iron by milling, turning or boring with a shaped tool, wherein said shaped tool is a ceramic consisting essentially of Si.sub.3 N.sub.4 and 4-12% by weight Y.sub.2 O.sub.3, produced by hot pressing at a pressure and a temperature of 1700.degree.-1750.degree. C. to achieve substantially full density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.