Production and use of low-alloy steel for mine supports
Autor: | A. S. Storozhenko, G. S. Yakimenko, V. A. Vikhlevshchuk, F. S. Zigel |
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Rok vydání: | 1987 |
Předmět: | |
Zdroj: | Metallurgist. 31:238-240 |
ISSN: | 1573-8892 0026-0894 |
DOI: | 10.1007/bf00732558 |
Popis: | The Institute of Ferrous Metallurgy and the Kommunarsk combine developed a new low-alloy semikilled steel 20G2AFps. The steel was made in a two-bath furnace with the following modifications: metal was tapped at a temperature of 15-20/degree/C higher, alloyed mainly in the ladle with blast-furnace ferromanganese and nitrided ferro-vanadium, and deoxidized with ferrosilicon or silicomanganese. The lightweight steel was equal in service to steel St5ps while more durable. There was a 15% decrease in rejections which reduced metal waste. Weight of the new steel was reduced by 19%. |
Databáze: | OpenAIRE |
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