Acrylic emulsion silicon steel coating has the dilvantages of good electrical insulation, surface brightness,water resistance, adhesion, flexibility. During the synthesis process, different process of the emulsion, operation conditions could directly affect the performance indicators of the emulsion,so that  the coating performances could be changed, controlling the emulsion temperature, and feeding speed etc.,adjusting the emulsion viscosity index,the controlling content and other corresponding operation conditions, all indexes of the emulsion could achieve the best,so that the coating performance could be more perfect and meet customer demand.