In the relentless pursuit of cleaner, high-quality steel, researchers have uncovered a promising avenue to reduce nonmetallic inclusions in low-carbon tube steel, a critical component in various energy sector applications. Dr. Dmytro Zotov from the Department of Iron and Steel Metallurgy has spearheaded this research, published in the journal “Advances in Materials Science and Engineering” (translated from Russian as “Advances in Materials Science and Engineering”).
Nonmetallic inclusions, such as alumina and silicate, are unwanted particles that can compromise the integrity and performance of steel products. These inclusions often originate during the steelmaking process, particularly when tapping steel from the Basic Oxygen Furnace (BOF) converter to the ladle. Dr. Zotov and his team have identified a novel approach to minimize these inclusions by altering the deoxidation process.
Traditionally, aluminum has been used to remove oxygen from molten steel. However, this process can leave behind alumina inclusions. Dr. Zotov’s research suggests that replacing part of the aluminum with calcium and carbon compounds could significantly reduce alumina inclusions. “By using calcium carbide, we not only decrease the number of alumina inclusions but also enhance the solubility of these inclusions in liquid steel,” Dr. Zotov explained. This method also helps remove excess oxygen as gas, further purifying the steel.
The research also highlights the importance of controlling slag basicity during the ladle furnace treatment. By optimizing the slag’s chemical composition, harmful spinel inclusions can be suppressed, and nonmetallic inclusions can be transferred into the slag, away from the steel.
The commercial implications of this research are substantial. High-quality, low-carbon steel is in high demand for energy sector applications, including pipelines and structural components. Reducing nonmetallic inclusions enhances the steel’s mechanical properties, durability, and corrosion resistance, making it more reliable and cost-effective for critical energy infrastructure.
Dr. Zotov’s findings could revolutionize steelmaking practices, leading to cleaner, more efficient production processes. As the energy sector continues to evolve, the demand for high-performance materials will only grow. This research provides a crucial step towards meeting that demand, ensuring that the steel used in energy applications is of the highest quality.
The study, published in “Advances in Materials Science and Engineering,” offers a glimpse into the future of steelmaking, where innovative techniques and precise control of chemical processes pave the way for superior materials. As Dr. Zotov noted, “This research is not just about improving steel quality; it’s about redefining what’s possible in the steel industry.”