| 摘要 |
A flux powder for use in the continuous casting of steels, particularly aluminum killed steels in the form of a mechanical mixture of components and has the following chemical analysis by weight % :- silicon dioxide 20 - 60, calcium oxide source 20 - 60, calcium fluoride 3 - 20, alkali metal carbonate 3 - 20, carbon source 4 - 20 and aluminum oxide 0 - 10. At least the inorganic components of the mixture are substantially pure, whereby the properties of the powder may be made substantially uniform and reproducible. The components preferably have a uniform grain size and calcium carbonate is disclosed as a calcium oxide source and natural graphite is a preferred carbon source.
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