METHOD FOR MANUFACTURING POWDER OF MAGNETIC IRON ALLOY

摘要

PROBLEM TO BE SOLVED: To pulverize magnetic iron alloy by the use of a hammer mill without changing the particle size distribution with time. SOLUTION: Hammers 12 inside the hammer mill device 10 are formed of hard metal material, such as tungsten carbide, to suppress the wear of the hammers 12. It is desirable to use Re-Fe-B alloy prepared by splat cooling as the iron-base magnetic material and it is also desirable that FSSS average particle size ranges from 10 to 100μm. The resultant powder is used mainly for sintered magnets and bonded magnets and also applicable to the manufacture of other members.