Magnetized material having enhanced magnetic pull strength...

Details Magnetized material having enhanced magnetic pull strength... Magnetized material having enhanced magnetic pull strength...

H - Electricity

01

F

H01F 1/113 (2006.01) H01F 7/02 (2006.01) H01F 13/00 (2006.01)

Patent

CA 2117796

A process and apparatus for permitting the magnetization of flexible hard magnetic materials in the form of sheets or strips, such as magnetic rubber, wherein opposing arrays (10) formed from alternating magnetic disks and flux conducting elements are used in sets of two with opposing polar moments such as to induce a magnetic flux in the gap between the disks. A material to be magnetized is passed between the array sets (35) and consequently imprinted with magnetic poles. The magnetized properties of the material is enhanced by passing the material through a second set (38) of arrays which are axially offset with respect to the first set of arrays. This enhances the residual induction of the sample and significantly improves the pull strength of the material.

L'invention concerne un procédé et un appareil permettant la magnétisation de matériaux magnétiques durs flexibles se présentant sous forme de feuilles ou de bandes, comme du caoutchouc magnétique, dans lesquels des rangées opposées (10) constituées d'une alternance de disques magnétiques et d'éléments conducteurs de flux sont utilisées par groupe de deux avec des moments polaires opposés de façon à induire un flux dans l'espace entre les disques. On fait passer le matériau à magnétiser entre les ensembles de rangées (35) pour lui imprimer des pôles magnétiques. Pour accroître les propriétés magnétiques du matériau, on fait passer le matériau à travers un second ensemble (38) de rangées qui sont décalées axialement par rapport au premier ensemble de rangées. Ainsi, on augmente considérablement l'induction résiduelle de l'échantillon ainsi que la résistance à l'attraction du matériau.

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