Improvement of special steel quality as a result of using fosulis immersion nozzles designed by techcom

The firm TECHCOM GmBH (Germany) together with MISiS (Russia) has developed and patented an immersion, closed-bottom nozzle FOSULIS for casting special steels. The FOSULIS nozzle is fitted with a “skirt” fastened to the bottom of the outside of the nozzle above the lateral outlet channels arranged in...

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Bibliographic Details
Published in:Metallurgist (New York) 2012-11, Vol.56 (7-8), p.494-497
Main Authors: Köhl, R., Enders, V. V., Bondarenko, I. A.
Format: Article
Language:English
Subjects:
Carbon
Characterization and Evaluation of Materials
Chemistry and Materials Science
Materials Science
Metallic Materials
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Summary:The firm TECHCOM GmBH (Germany) together with MISiS (Russia) has developed and patented an immersion, closed-bottom nozzle FOSULIS for casting special steels. The FOSULIS nozzle is fitted with a “skirt” fastened to the bottom of the outside of the nozzle above the lateral outlet channels arranged in a fan pattern over the perimeter of the nozzle cross section. In this case, steel is fed into the volume of liquid metal within a mold by distributed streams, and axial flow is inhibited. The nozzle has been tested under production conditions for casting ball-bearing, rail, and structural steels. Use of the nozzle makes it possible to reduce steel contamination by a factor of two to three, and to improve macrostructure quality indices by a factor of two. Additional testing of the FOSULIS nozzle is planned in casting high-quality, high-carbon steel for cord with increased specifications for non-metallic inclusions and carbon segregation.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-012-9604-x