Patent ID: 6328825
Filing Date: 2001-12-11
Classification: H01F

Abstract:
A method for producing an alloy used for the production of a rare-earth magnet, comprising the steps of:preparing an alloy-melt which consists of from 35 to 60% by weight of at least one rare-earth element (R) selected from the group consisting of Nd, Dy and Pr, and the balance being Fe;feeding the alloy melt into a rotary tubular mold having an inner surface and onto one or more portions of the inner surface;rotating the rotary tubular mold around its longitudinal central axis;accumulating the alloy melt onto the inner surface of the rotary tubular mold at an average rate of 0.1 cm/second or less; and,centrifugally casting the alloy melt being accumulated at said average rate.