부산대학교 도서관

It has been known for a long time that replacement of aluminum by copper, which has an advantage in high conductivity, can be an economic solution for various applications including electric vehicle in the development of energy efficient motors. In comparison to aluminum, copper die-casting is difficult to perform due to its high density, viscosity, and melting point. Owing to these reasons, the copper die-cast rotors evince several manufacturing problems. The objective of this work is to identify the various defects in the manufacturing of copper die-cast rotor, and identify the lamination coating condition that sustains copper die-cast pressure and temperature. It evaluates the effectiveness of lamination coating on limiting the eddy current loss and the recoating process to improve in case the eddy current loss is in excess due to copper die-casting.