Development of magnet wire having excellent windability

Abstract

For manufacturers of motors and transformers supplied to the home appliance industry or the automotive industry, developing higher performance products and reducing the cost have become more vital than before. These manufacturers have improved their winding process to be more automatic with higher winding speed. They also try to fill a slot of a coil with more volume of magnet wire to produce higher efficiency product. There is a strong possibility that the insulation coating of the wire is damaged in the winding process. Conventionally, to prevent insulation from damage, we have developed some unique Bell-lubricating enamel or new surface lubricant for magnet wire. In the circumstance, we have developed new enamel, which improved adhesion between bare wire conductor and enamel insulation film of magnet wire. This challenge successfully provided new magnet wire that significantly improves windability.