대형 산업용 전동기 회전자용 알루미늄 다이캐스팅의 주조성을 고려한 슬롯 형상 설계 기준 정립

• Published in: 한국주조공학회지 Vol. 36; no. 1; pp. 10 - 17
• Main Authors: 이성모, Sung Mo Lee, 김덕수, Deok Su Kim, 박태동, Tae Dong Park, 윤영철, Young Cheol Yoon
• Format: Journal Article
• Language: Korean
• Published: 한국주조공학회 28.02.2016
• Subjects: Aluminum diecasting; Castability; Diecasting Limit diagram; Motor rotor; Solidification modulus; 금속공학; Diecasting limit diagram; Solidification modulus; Motor rotor; Castability; Aluminum diecasting
• ISSN: 1598-706X; 2288-8381

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