Recent research has unveiled significant advancements in the treatment of metal melts, particularly focusing on the formation of non-metallic inclusions (NI) in large-sized ingots. Conducted by Aristotel Issagulov from the Department of Nanotechnology and Metallurgy at Karaganda Technical University, this study has profound implications for the construction sector, where the quality of steel is paramount.
The research examined the effects of complex extra-furnace treatment on the 13Cr9Mo2Co1NiVNbNB steel melt. This particular alloy, known for its strength and durability, is critical in various construction applications, including high-stress environments. The study involved two batches of samples: one from a laboratory setting and the other from industrial furnace processes, enhanced by modification and double vacuuming.
Issagulov’s team utilized Fact Sage software to model the formation processes of non-metallic inclusions, revealing a striking difference in the composition of these inclusions between the two batches. “In the first batch, over 94% of the non-metallic inclusions were chromium- and manganese-containing oxides,” Issagulov explained, highlighting the challenges faced in the initial melting process. In contrast, the second batch, which underwent extra-furnace treatment, predominantly featured aluminum-containing systems.
One of the most compelling findings of this research is the substantial reduction in the contamination index of the industrial samples. After undergoing vacuum treatment and further modifications, the contamination index decreased by more than tenfold. This dramatic improvement suggests that enhanced processing techniques can lead to superior metallurgical quality in steel production.
The implications for the construction industry are significant. High-quality steel with fewer non-metallic inclusions translates to improved structural integrity and longevity of materials used in construction projects. As the demand for robust and reliable construction materials continues to rise, innovations like those presented in this study will be crucial.
Issagulov emphasized the importance of these findings, stating, “The results obtained allow us to recommend vacuum treatment and complex modification with calcium and boron as effective measures to prevent the formation of non-metallic inclusions.” This recommendation could pave the way for more efficient manufacturing processes, ultimately benefiting the construction sector by ensuring that the materials used meet stringent quality standards.
The research was published in ‘Materials Research Express,’ a journal dedicated to disseminating significant findings in materials science. As the construction industry evolves, studies like this one will undoubtedly shape future developments, driving innovation and enhancing the quality of materials that form the backbone of our infrastructure. For further information, you can visit the Department of Nanotechnology and Metallurgy at Karaganda Technical University.