Abstract: The cutting process will lead to the deterioration of the magnetic properties of the electrical steel, causing changes in the microstructure of the edge of the electrical steel. The cutting experiment was carried out on the non-oriented electrical steel sheet, and the effects of wire cutting and laser cutting processes on the magnetic properties of electrical steel were studied. The magnetic properties of wire-cut and laser-cut electrical steels were tested by using the test method of annular specimens, and the material model was constructed based on the measured data, and the material model was combined with the motor model under actual working conditions, and the motor loss was verified by simulation. The results showed that the wire cutting process has little effect on the magnetic properties of electrical steel, and the loss of electrical steel in the wire cutting process for motors is low.

Key words: cutting process, finite element simulation, non-oriented silicon steel