关键词: 磁滞电机, 转子组件, 磁性能损失, 因素分析, 解决方法

Abstract: The material 2J4 used for hysteresis motor rotor is sensitive to stress, and it is easy to lose magnetism under the influence of stress in the production process. The low qualification rate of magnetic performance test become the bottleneck problem restricting the production. In order to avoid magnetic property loss caused by stress in rotor, through magnetic property testing and analysis of the whole process, it was determined that the bonding end ring process was the main process liable to lose magnetism in assembly process. Through the analysis and verification test of the process of bonding end ring, it was found that high temperature curing with imidazole fixed adhesive was the main factor leading to the loss of magnetism. Verification test was carried out,the DG-3S epoxy adhesive cured at room temperature was adopted of which the mechanical properties can meet the requirements of product bonding strength.The solution can effectively solve the problem of magnetic energy loss of rotor during assembly.

Key words: hysteresis motor, rotor, loss of magnetic flux density, factor analysis, solutions