Method for manufacturing rare earth magnet
AssigneeStar Group Ind. Co., Ltd
InventorsDong Hwan KIM, Koon Seung KONG
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Abstract
The present invention provides a method for manufacturing a rare-earth magnet, the method comprising the steps of preparing a rare-earth magnet raw material powder including R, Fe and B as composition components (R is one or more elements selected from the rare earth elements including Y and Sc); packing the raw material powder into a molding die, and compacting and molding the raw material powder while applying a magnetic field, wherein, in the compacting and molding step, compacting is performed biaxially, in the directions of X and Y axes, when the magnetic field is applied in the direction of Z axis.
Claims9
A method for manufacturing a rare-earth magnet comprising the steps of:
- preparing a raw material powder for a rare-earth magnetic composed of R, Fe and B (wherein R is at least one element selected from rare-earth elements including Y and Sc);
- packing the raw material powder into a molding die;
- and
- compacting and molding the raw material powder as a compact by forming a magnetic field, wherein, in the compacting and molding step, when the direction of the magnetic field is a Z-axis, the compacting is performed along the directions of an X-axis and an Y-axis.
A rare-earth magnet as manufactured by compacting and molding, in a magnetic field, a raw material powder for the rare-earth magnet composed of R, Fe and B, comprising:
- when a direction of the magnetic field is a Z-axis, an average distance between crystal grains in an X-axis direction which is 0.90˜1.10 times compared to an average distance between crystal grains in an Y-axis direction.
Dependencies are inferred from the claim text.