Loading patent…
AssigneeDaido Tokushuko Kabushiki Kaisha
InventorsJunichi Esaki, Hiroaki Yoshida, Sachihiro Isogawa
Estimating the term…
The present invention relates to a process of producing a permanent magnet, which includes extruding a preform to form a plate-shaped permanent magnet, in which the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction. The present invention also relates to a plate-shaped permanent magnet formed by extruding a preform, in which the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction, whereby the permanent magnet has a strain ratio ε2/ε1 with respect to the preform in a range of 0.2 to 3.5, in which ε1 is a strain in the direction of the extrusion of the preform and ε2 is a strain in the Y-direction.
A process of producing a permanent magnet, which comprises extruding a preform to form a plate-shaped permanent magnet, wherein the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction.
A plate-shaped permanent magnet formed by extruding a preform, wherein the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction, whereby said permanent magnet has a strain ratio ε2/ε1 with respect to the preform in a range of 0.2 to 3.5, wherein ε1 is a strain in the direction of the extrusion of the preform and ε2 is a strain in the Y-direction.
Dependencies are inferred from the claim text.