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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

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. Source

Kohl R.,TECHCOM GmbH | Enders V.V.,TECHCOM GmbH | Bondarenko I.A.,Belarus Metallurgical Plant

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. Source

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