Complex effect of sulfur and phosphorus on the characteristics of wheel steel of KP-T brand before and after modification

The object of the research is KP-2 wheel steel modified by Al-Mg-Si-Fe-C-Ca-Ti-Ce system. One most problematic places in smelting modern stability chemical composition due to use uncontrolled content scrap, charge and standard modifiers, which are made fused method. To eliminate this problem, multifunctional modifiers were used during study. This fact that modification method proposed article, has a number features. In case, influence action on installation vacuum processing desulfurization KP-2, obtained under conditions open joint-stock company Interpipe NTRP (Dnipro, Ukraine), was established. particular, when treating melt with not only refining effect occurs, but also an increase level mechanical characteristics steel. confirmed coefficients variation interfusion difference presented article (span), statistical large data set – 442 serial smeltings 1 (6 wheels). Thanks modification, quality finished wheels really increases. Compared similar mass-produced materials, such as FeSi, FeCa, FeMn, SiCa, new provides significant reduction mass fraction sulfur than same metal processed traditional way. It been established changes shape non-metallic inclusions globular reduces their number, increases properties prove more stable melts will demand these railway wheels.