C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
22/51
C22B 9/04 (2006.01) B22D 11/10 (2006.01) B22D 11/113 (2006.01) C21C 5/56 (2006.01) C21C 7/10 (2006.01)
Patent
CA 1226717
ABSTRACT OF THE DISCLOSURE The invention provides an improved system for continuous processing of molten steel and other metals comprising continuous withdrawal, vacuum treatment and casting, employing a specialized post-treatment vessel stationed adjacent to a continually maintained supply of metal in a furnace bath. The post-treatment vessel incorporates a vacuum degassing column chamber section which is fed with metal through a withdrawal tube with the inlet inserted into the furnace bath and the outlet into the degassing column, the lower portion of which extends laterally into a tundish pouring section from which metal may be poured through a nozzle directly into a continuous caster. Sealing of the tundish cover, which is incorporated into the post-treatement vessel assembly, is a key element of the invention. First this provides for initial post-treatment vessel evacuation to start metal withdrawal, simply by sealing off the tundish nozzle (optionally together with a withdrawal tube valve), eliminating secondary starting gates, seals, or the like for the degassing column section. Secondly, it provides for a metal flow path from furnace to pouring nozzle and even from furnace-to-mold which is completely excluded from the atmosphere eliminating the well-known deleterious effects of oxygen and nitrogen contact with the molten steel. Thirdly, preferred embodiments practically eliminate internal flow restrictions and control points between bath and casting, the overall rate of metal flow being self adjusting throughout, according to withdrawal rate of the solidified cast section, which is subject to direct external operator control.
481641
LandOfFree
Continuous vacuum degassing and casting of steel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous vacuum degassing and casting of steel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous vacuum degassing and casting of steel will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1169196