NOVEL PROCESSING TECHNOLOGY FOR PERMANENT-MAGNETS

A rubber isostatic pressing (RIP) process has been developed for high- performance magnets. The combination of high packing density of the po wder in the rubber-mold cavity and magnetic alignment by a high, pulse d magnetic field is shown to be essential for obtaining good green com pacts for sintered magnets having very high energy products. An automa ted apparatus to implement this technology has been designed and const ructed. The many advantages of RIP over conventional die pressing incl ude faster, easier production of magnets with superior magnet properti es.