Study on Eco-friendly Insulating Fluid for Non-oriented Electrical Steel Sheet

At present,most of the insulating fluid for non-oriented electrical steel contains chromium,and should be cured at high temperature.On the basis of analyzing the characteristics of the film-forming substance,a kind of eco-friendly insulating fluid with lower curing temperature for non-oriented electrical steel sheet was developed in the experiments.Then its coating process was studied,and the adhesiveness,insulativity,heat resistance,corrosion resistance and other properties of the coating was measured.The results show that the fluid can be rapidly dried and cured at 150℃ to 250℃,and the resulted smooth,compact and uniform coating with excellent performance can meet the application requirement of small and medium-sized motors.