Process and apparatus for reducing the inclusion content of steels and for refining their structure
AssigneeVasipari Kutato Intezet
InventorsIstvan Tamas, Lajos Tamas, Gyula Kiss, Jozsef Kiss, Antal Kaldor
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Abstract
A process for reducing the inclusion content of steels and refining their structure which comprises the steps of subjecting molten steel containing inclusions to a pressure of at least 1 atm; removing inclusions from the molten steel by introducing therein at said pressure an inclusion-removing alloy containing calcium or magnesium; and thereafter applying vacuum to the molten steel to evaporate residual calcium or magnesium from the steel.
Claims2
A process for reducing the inclusion content of steels and refining their structure which comprises the steps of subjecting molten steel containing inclusions to a pressure about 2 to 6 atms;
- removing inclusions from the molten steel by injecting therein at said pressure through a blast lance by means of an inert gas an inclusion-removing alloy containing calcium or magnesion;
- and thereafter applying a vacuum of 10.sup.-3 to 10 Torr to the molten steel to evaporate residual calcium or magnesium from the steel.
Dependencies are inferred from the claim text.