Application of injection molding process coupled analysis of bonded magnet to cylindrical mold model

Abstract

　A bonded magnet is a permanent magnet molded by mixing magnetic powder and resin. Injection molding, one of the molding methods, has the advantage of greater freedom of shape than other molding methods, but it is difficult to understand the behavior of the resin during molding, resulting in variations in the density and magnetic properties of the molded product. Therefore, a coupled analysis method of the particle method and the magnetic moment method has been proposed to understand the resin behavior. In this study, we used this coupled analysis method to evaluate the behavior of resin during injection molding of bonded magnets in a cylindrical mold model with multiple injection ports placed at equal intervals.