PRODUCTION OF BORON-BEARING GRADES OF STEEL WITH A REGULATED SULFUR CONTENT AT THE CHELYABINSK METALLURGICAL PLANT

摘要

The rate of growth of ferrous metallurgy depends not only on improvements in the equipment and processes that are used, but also on the industry's ability to meet the continually rising standards on the quality of metal while simultaneously minimizing the consumption of alloying materials. The use of boron opens up new possibilities in the production of economically alloyed grades of steel. The service properties of these steels are equal and, in many cases, even superior to those of steels obtained with the use of traditional methods of alloying. The Chelyabink Metallurgical Combine has developed a technology for the furnace refining and out-of-furnace treatment of boron-bearing steels with a controlled mass content of sulfur. The new technology is now being used to make all grades of steel that must meet certain requirements on hardenability, sulfur content, and the level of contamination by nonmetallic inclusions.