MANUFACTURING METHOD OF SPLIT TYPE NON-MAGNETIZED PERMANENT MAGNETS

A manufacturing method of split type non-magnetized permanent magnet may include manufacturing an anisotropic block having a uniformly aligned magnetization determining direction. A first cutting operation of cutting the anisotropic block in a direction which is perpendicular to the magnetization determining direction is performed. A grain boundary diffusion is performed on the plurality of slit blocks. Adhering surfaces of the plurality of split blocks to each other which are cut by the first cutting operation is performed. A second cutting operation of cutting the block in a direction is performed which is perpendicular to the magnetization determining direction and the first cutting direction.