한국주조공학회

Numerical analysis has been performed to evaluate effect of the shape variables such a as core length, slot width and slot length on misrun in aluminum die casting process f for motor rotor. The predictive method for misrun in diecasting process was e established by comparing the result of numerical analysis and an actual motor rotor. S Solidification modulus was introduced to predict quantitatively the castability of a aluminum diecasting process for motor rotor. It was found that there are minimum c critical solidification modulus and slot width to prevent misrun according to core l length through diecasting limit diagram proposed using the predictive method. The c critical solidification modulus and slot width increase as core length increases to p prevent misrun of aluminum motor rotor in diecasting process. Based on the results, t the design criteria of slot shape to prevent misrun of aluminum motor rotor with v various core length were established.

Diecasting limit diagram, Aluminum diecasting, Motor rotor, Castability, Solidification modulus