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München, Germany

Schumacher E.E.,TECHCOM GmbH | Semenyak M.Y.,TECHCOM GmbH | Smoktiy V.V.,TECHCOM GmbH | Porokhnyavyi V.G.,TECHCOM GmbH in Ukraine | Zazyan A.S.,Belarus Metallurgical Plant
Metallurgist | Year: 2012

This article describes the sequence of operations performed in an impulsive purging technology developed by the company TECHCOM. The technology was used to treat different grades of steel in a 120-ton ladle. Data presented in the article substantiate the effectiveness of the new technology. © 2012 Springer Science+Business Media New York.

Kohl R.,TECHCOM GmbH | Enders V.V.,TECHCOM GmbH | Bondarenko I.A.,Belarus Metallurgical Plant
Metallurgist | Year: 2012

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. © 2012 Springer Science+Business Media New York.

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