MODERN TECHNOLOGICAL SCHEMES FOR THE PRODUCTION OF ECONOMICALLY ALLOYED STEELS FOR SHEET ROLLING

Reducing the cost of rolled metal, in particular through the production of economical and low-alloy steels with high physical and mechanical characteristics, is a key task of modern steel production, which is used in the construction of industrial and civil facilities, bridges, pipelines, cranes, frames and bodies of heavy trucks, etc. Modern fields of application place high demands on it in terms of strength, cold resistance, low-temperature toughness and weldability. There are a large number of methods for influencing the quality of alloyed steel. For this purpose, treatment in or outside the furnaces with inert gases, synthetic slags, modification, strict adherence to smelting technology or adjustment of the chemical composition of the steel is used, which in many cases allows avoiding further heat treatment of the ingot. Estimating the time and material costs for applying various methods of improving the quality of steel, economical alloying in combination with microalloying is currently the most profitable and promising way to achieve the required properties of steel.