Cast iron making by cerium addition
US4681642A · kind A · utility
1Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1985 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | Nov 20, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2101
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This invention concerns an improvement in cast iron material and chilled iron material. The cast iron material has a C.E. value of not more than 4.3 in which cerium is added in the form of a mischmetal upon casting to a cerium content of from 0.005 to 0.035 wt %. The chilled cast iron article has a chilled layer formed by remelting at least a portion of the surface of the cast iron of a predetermined shape composed of the above-mentioned cast iron by a high density energy source such as tungsten inert gas (TIG) arc, laser or electron beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.