Clean Steel: Advancing the State of the Art (TRP 0003)
This project had 3 objectives: (1) to determine the kinetic factors governing inclusion removal from liquid steels at a slag metal interface; (2) to develop a methodology to enable steels of less than 1 ppm total oxygen to be produced with an average inclusion diameter of less than 5 {micro}m; and, (3) to determine the slag-metal interface conditions necessary for ultra clean steels. In objectives 1, and 3, the major finding was that dissolution rates of solid particles in slags were found to be significant in both ladle and tundish slags and must be included in a model to predict steel cleanliness. The work towards objective 2 indicated that liquid steel temperature was a very significant factor in our understanding of clean steel potential and that undercooled steels equilibrated with low oxygen potential inert gases have the potential to be significantly cleaner than current steels. Other work indicated that solidification front velocity could be used to push particles to produce clean steels and that reoxidation must be severely curtailed to allow the potential for clean steels to be realized.
- Research Organization:
- American Iron and Steel Institute (US)
- Sponsoring Organization:
- USDOE Office of Industrial Technologies (OIT) (EE-20) (US)
- DOE Contract Number:
- FC36-97ID13554
- OSTI ID:
- 840937
- Resource Relation:
- Other Information: PBD: 19 May 2004
- Country of Publication:
- United States
- Language:
- English
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