Method of forming permanent magnets within a motor yoke

Details Method of forming permanent magnets within a motor yoke Method of forming permanent magnets within a motor yoke

H - Electricity

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H01F 41/00 (2006.01) C04B 35/26 (2006.01) C04B 37/02 (2006.01) H01F 1/36 (2006.01) H01F 41/02 (2006.01) H02K 1/17 (2006.01) H02K 15/00 (2006.01) H02K 15/03 (2006.01)

Patent

CA 1285124

Abstract of the Invention In a method of forming a 360° ceramic permanent magnet by utilizing a hot isostatic pressing technique on a ceramic preform material cylindrically formed and placed inside a deformable metal housing having an inner diameter that is approximately the same but only slightly larger than the outer diameter of the preform. A solid steel mandrel is provided in the center diameter of the hollow cylindrical perform. Crystal alignment and densification of the ceramic material is achieved by using the hot isostatic pressing technique applied to the outside of the housing, preform and mandrel assembly.

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