PURPOSE: To provide a manufacturing method wherein an anisotropic bonded magnet provided with an excellent magnetic characteristic can be obtained with good productivity.
CONSTITUTION: A magnetic powder which is composed of 10 to 30 atomic % of R (where R represents at least one kind of rare-earth elements including yttrium), 2 to 28 atomic % of boron and 65 to 82 atomic % of M (where M represents at least one kind out of iron, cobalt and nickel) and whose average particle size is at 0.5 to 100μm is mixed with a liquid thermoset resin in such a way that the content of the magnetic powder is at 90 to 99wt.%. The title manufacturing method is used to obtain an anisotropic bonded magnet by pressing and molding such a mixture in a magnetic field. It is featured in the following manner: a pressing and molding pressure is at 2 to 8t/cm2; the mixture is pressurized up to a set pressure; after that, an upper punch is pulled out from a die; and an operation to pressurize the mixture up to the set pressure again is repeated two to five times.
Next Patent: MANUFACTURE OF MAGNETIC POWDER FOR ANISOTROPIC BONDED MAGNET USE