State Scientific Center of RF All-Russian Design and Research Institute of Metallurgical Machine-Building named after A. I. Tselikov (Moscow, Russia):

A. V. Protasov, Cand. Eng., Head of Information and Advertising Dept., e-mail: avp@vniimetmash.ru
I. V. Komolov, Head of Dept. of Complex Projecting of Metallurgical Objects

Usage of powder wire is one of the most dynamically developing directions of ladle treatment of liquid iron and steel. Powder wire has practically no restrictions in composition if filling agents and is characterized by large potential for expanding of its practical usage. It is shown that at present time Russia has not metallurgical plants operating without usage of this technology. The most rational technological routes and ways of wire application are determined after experience accumulation. Wire dimension and grade range is expanding, construction of equipment for wire introduction in melt is improving. Wire quality improvement, optimization of construction and technological parameters, expanding of solving technological problems are considered as the main tasks in this area. Usage of monolithic calcium wire and multi-component calcium-containing powder wire are mentioned as the most prospective development directions. The future prospects can be connected with development of so-called “small metallurgy”: production of melts with 3-20 t weight from high-quality steels and desulphurizing processes in high-strength ironmaking. It is shown that usage of powder wire leads also to rise of efficiency of technological processes and to lower production expenses.

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