Abstract: To investigate the impact of self⁃bonding coating technology on motor performance, the same grade of non⁃oriented silicon steel material was tested using three different methods: self⁃adhesion, welding, and gluing, in the same motor model for comparison. The results showed that motors with the self⁃adhesion process can achieve an efficiency improvement of about 0.5 % and a reduction in iron loss of about 10 % compared to motors using the other two methods. Motors with the self⁃adhesion process exhibit lower iron losses, and their high⁃efficiency range is higher than that of the gluing and welding processes, providing valuable insights into the application of self⁃adhesive coating technology in motors.

Key words: non?oriented silicon steel, self?bonding coating, welding, gluing, motor efficiency