Effect of electromagnetic field on rheological properties of continuous casting mould flux
LIU Ke1,2, ZENG Yi-jun2,3, HAN Yi-hua1,2, YANG Fan1,2, ZHU Li-guang1,2
1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China; 2. Hebei Engineering Research Center of High Quality Steel Continuous Casting, Tangshan 063000, Hebei, China; 3. College of Management, North China University of Science and Technology, Tangshan 063210, Hebei, China
Abstract：The rheological properties of mould fluxes with and without magnetic field were studied experimentally by using a self-made device for viscosity measurement of mould fluxes in electromagnetic field and a HF-201 viscometer, and the microstructure of mould fluxes with and without magnetic field was studied by Scigress molecular dynamics simulation, and the relationship between the rheological properties of mould fluxes and the microstructure was analyzed. The results showed that the viscosity and turning temperature of mould fluxes increased, and the Si-O bond length of mould powder did not change, which was 0.162 5 nm, but the bonding ability of Si and O increased under the action of the electromagnetic field. After the magnetic field was applied, the content of four-coordinated Si, bridging oxygen and complex structural unit Q3 in the slag increased, and the degree of polymerization of slag network structure increased, which was complex and stable.
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2020, Vol. 30 
