Quality Evaluations of Induction Motor Rotors during Die Casting Process

유도전동기 회전자 금형주조 시 품질평가

  • Park, Sang-Chul (Department of Naval Architecture & Ocean Engineering, Koje College)
  • 박상철 (거제대학교 조선해양공학과)
  • Received : 2018.07.09
  • Accepted : 2018.10.05
  • Published : 2018.10.31


This study examined the cast quality of small-sized induction motor rotors during the die casting process. Numerical analyses with 3-dimensional half models were performed to investigate the filling patterns of aluminum molten metals into a mold after high-speed injections. The following were obtained from numerical analyses and experimental results. First, molten metals started to fill the lower end ring, then moved horizontally to fill the core slot and upper end ring, and finally stopped to fill the rotor core slot. Second, circulation of molten metals occurred at the lower end ring, resulting considerable porosity at the section of lower end ring from the experimental results. Third, further work for obtaining sound quality of rotor core cast is required to develop a new shape of the rotor core cast or improve the die casting conditions.


Induction Motor;Rotor;Die Casting;Rotor Core;Aluminum Cast;Filling Analysis


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