Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1989-07-25
1991-05-14
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75382, C21B 1110
Patent
active
050152874
ABSTRACT:
A steel melting and secondary-refining method comprising the steps of: melting steel manufacture raw materials while the molten steel is subjected to oxidation and decarburization so that the oxidation and decarburization are substantially completed before melt-down; after melt-down, heating the molten steel to a temperature above a liquidus line temperature and below 50.degree. C. in temperature increment from the liquidus line temperature, and thereafter tapping the molten steel into a primary ladle; teeming the molten steel from the primary ladle into a secondary refining furnace; allowing the molten steel to be effluent into a secondary ladle at a lower portion of the secondary refining furnace while the temperature of the molten steel is raised; and continuously performing gas bubbling in the secondary ladle in a vacuum under existence of slag simultaneously with the effluence of the molten steel into the secondary ladle.
REFERENCES:
patent: 4094495 (1978-06-01), Kutscher et al.
patent: 4615511 (1986-10-01), Sherwood
patent: 4696458 (1987-09-01), Royzman
Egusa Norio
Yamada Katsuhiko
Andrews Melvyn J.
Sumitomo Electric Industries Ltd.
LandOfFree
Steel melting and secondary-refining method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steel melting and secondary-refining method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steel melting and secondary-refining method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1645584