Effects of Pulsed Magneto-Oscillation on the Homogeneity of Low Carbon Alloy Steel Continuous Casting Round Billet

Pulsed Magneto-Oscillation (PMO) is a newly developed and effective homogenization technique, has been successfully applied in rectangular continuous casting, but its processing parameters stability round billet casting have not investigated. In this paper, the effects of PMO on solidification structure macrosegregation Φ 178 mm billets for low carbon alloy steel were studied by industrial experiments. The results show that can stably increase equiaxed grain area, reduce billets. Moreover, it strong adaptability to grade process parameters. Compared with without treatment, 93.8% (15 billets) solidified PMO, area ratio increased an average 5.8%, while 87.5% (14 billets), segregation index range decreased 0.06, though different grades, superheat speed used experiment. It believed convection caused Lorentz force accelerate heat dissipation liquid, temperature liquid at front, magnetic oscillation effect conducive dendrite fragmentation. Both lead refinement reduction macrosegregation.