Production and use of low-alloy steel for mine supports

Autor: A. S. Storozhenko, G. S. Yakimenko, V. A. Vikhlevshchuk, F. S. Zigel
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