Process of making nodular iron and after-treating alloy utilized therein
US3955973A · kind A · utility
11Cited by
2References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | May 20, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K5/62
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improvement in a process for making nodular iron is disclosed. Prior to casting, an iron melt which has previously been contacted with a graphite-spheroidizing agent is further contacted with an after-treating alloy agent containing from about 0.8 to about 1.8 weight percent magnesium. Magnesium utilization in the pre-casting step is unusually high and the amount of graphite-spherodizing agent can be substantially reduced without detrimentally affecting the metallurgical or physical properties of the resulting nodular iron product. The after-treating alloy agent is also claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.