MOLDING APPARATUS FOR MAKING ANISOTROPIC RING-SHAPED MAGNETS WITH ZONES HAVING A PREFERRED RADIAL DIRECTION

摘要

Apparatus for the production of ring-shaped permanent magnets having radial lines of force from permanent magnet powder and a binder comprises a die holder provided with a liner of hard having high mechanical strength and/or abrasion resistance magnetic material for cooperation with a center ram and opposed end wall rams.