Prevention of Nozzle Clogging by the Reduction of Refractory Permeability
A research effort sponsored by the Department of Energy (DOE) and several steel producers has examined the benefits of coating steel casting nozzles with various materials. Coatings were applied to casting simulation nozzles made from industrial tundish nozzles (primarily of magnesia) and industrial submerged entry nozzles (SENs) (primarily of alumina-graphite) in order to extend casting time prior to nozzle clogging. Nozzles were coated by air plasma spray (APS) using a 9M series APS system from Sulzer-Metco. The ability of these coatings to provide protection from clogging was evaluated using a steel casting simulation. Substrate-coating compatibility was characterised using optical microscopy and SEM.
O. J. Rajtora et al., "Prevention of Nozzle Clogging by the Reduction of Refractory Permeability," Proceedings of the 4th International Symposium on Advances in Refractories for the Metallurgical Industries, Canadian Institute of Mining, Metallurgy, and Petroleum, Aug 2004.
Materials Science and Engineering
Peaslee Steel Manufacturing Research Center
Keywords and Phrases
Aluminum Oxide; Magnesium Oxide; Permeability; Plasma Spraying; Spray Coating; Steel Making; Tundishes
Article - Conference proceedings
© 2004 Canadian Institute of Mining, Metallurgy, and Petroleum, All rights reserved.
01 Aug 2004