| Electromagnetic stirring( EMS) in the continuous casting technology is a very effective for the improvement of blooms solidification, crystal axis expansion, reducing macroeconomic segregation, center osteoporo-sis ,shrinkage, and other coagulation defects such as cracks. Therefore, through impressed the electromagnetic field has been stirring on the molten steel, the field is supply by the electromagnetic stirrer in the continuous casting process. The study in-depth have been proceed on electromagnetic parameters to improve bloom solidified the role of the law to be refinement, composition homogenization, defects to reduce or even eliminate the bloom, to raise a new generation of steel mechanical properties of materials and the use of performance are having a positive effect.Using the linear electromagnetic stirring system and control device developed by ourselves, researched the electromagnetic force characteristics of the linear electromagnetic field of under liquid steel within different casting process parameters and the role on the solidification of bloom , adopt the method of theoretical analysis and experimental study in the laboratory.Based on the basic theory of electromagnetic fields, the study of electromagnetic force characteristics was analyzed. The results of the electromagnetic stirring were presented, the numeric values of electromagnetic force were with the increased of the width of liquid steel pool in the exponential ,and the rate of weakening were related with the current frequency and polar distance of the stirrer. The maximum electromagnetic force in molten steel were direct proportion with the I2 in the linear electromagnetic stirrer approximate when the structure of the stirrer were determined and the current frequency as 50 Hz.Two linear electromagnetic stirrers with same specification were used in this study. The magnetic induction density in the stirring zone were determination when use different current, the distance were 200mm,300mm,400mm and use the same magnetic field direction and used the different magnetic field direction use different direction between two linear electromagnetic stirrer individually. The regression analysis and curve fitting were proceed to the measured data using the Origin 7.5 software and get the regression equations.Uses two linear electromagnetic stirrers with a distance of 300mm and with the same magnetic field direction, a study of simulation on bloom continuous casting have been proceed. The molten steel were supplied by with a median frequency induction furnace. The molten steel from the crucible were topped a small ladle, than topped hot steel into a water-cooled stainless steel mold that within section 200 mm×200 mm. The molten steel are 82-B steel and silicon steel. The mold were putted in the magnetic field produced by two linear electromagnetic stirrers. Electromagnetic stirring to the molten steel with the biggest phase current 300 A, 400A, 500A were agitation by two stirrers. After cutting these blooms, the solidification structures ,segregation of carbon, and inclusions in the bloom were analyzed. The main findings are:(1) Exponential of carbon segregation at the center of the bloom from 0.9887 and 1.045 without stirring dropped to 0 .9122 and 1.040 with stirring, and carbon content distribution more uniform in the blooms with stirring.(2) Have more biger particle inclusion and the ratio that total area of the size is greater than the 100μm of particle and intensive areatus inclusion / total total area of the sample is 48% in the bloom without stirring the sample, threrefor, never found the inclusion particle that the size is greater than the 100μm and intensive areatus inclusion in the bloom with stirring. The grades of inclusions in the bloom from 4.4～5.6 without stirring down to 3.2～3.9 after the stirring.
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