Method for the powder metallurgical manufacture of magnets (Machine-translation by Google Translate, not legally binding)

The present patent aims to present a new method for the powder metallurgical manufacture of magnets (applicable especially to the manufacture of magnets containing rare earths). The novelty of the method lies in the use of some form of electrical consolidation (such as the so-called electric resista...

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Hauptverfasser: GOMEZ CUEVAS, FRANCISCO, CINTAS FISICO, JESÚS, TERNERO FERNANDEZ, FÁTIMA, MONTES MARTOS, JUAN MANUEL
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CINTAS FISICO, JESÚS
TERNERO FERNANDEZ, FÁTIMA
MONTES MARTOS, JUAN MANUEL
description The present patent aims to present a new method for the powder metallurgical manufacture of magnets (applicable especially to the manufacture of magnets containing rare earths). The novelty of the method lies in the use of some form of electrical consolidation (such as the so-called electric resistance sintering, sre, or the so-called consolidation by electric discharge, cde, but not necessarily one of these) in substitution of the conventional route of pressing cold sintered, usually used. This achieves: (1) combining the compaction/sintering stages, significantly shortening their duration and reducing the magnitude of the working pressures, (2) carrying out the magnetic alignment, pressing/sintering, thermal treatment and magnetization steps in the same matrix, and (3) make unnecessary the use of protective atmospheres during the sintering process. (Machine-translation by Google Translate, not legally binding) La presente patente tiene por objeto presentar un nuevo método para la fabricación pulvimetalúrgica de imanes (aplicable especialmente a la fabricación de imanes que contienen tierras raras). Lo novedoso del método reside en el empleo de alguna modalidad de consolidación eléctrica (como la denominada sinterización por resistencia eléctrica, S.R.E., o la denominada consolidación por descarga eléctrica, C.D.E., pero no necesariamente una de éstas) en sustitución de la ruta convencional de prensado en frío + sinterizado, empleada habitualmente. Se logra con ello: (1) aunar las etapas de compactación/sinterizado, acortando significativamente su duración y reduciendo la magnitud de las presiones de trabajo, (2) llevar a cabo las etapas de alineamiento magnético, prensado/sinterizado, tratamiento térmico y magnetización en una misma matriz, y (3) hacer innecesario el empleo de atmósferas protectoras durante el proceso de sinterizado.
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Lo novedoso del método reside en el empleo de alguna modalidad de consolidación eléctrica (como la denominada sinterización por resistencia eléctrica, S.R.E., o la denominada consolidación por descarga eléctrica, C.D.E., pero no necesariamente una de éstas) en sustitución de la ruta convencional de prensado en frío + sinterizado, empleada habitualmente. 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The novelty of the method lies in the use of some form of electrical consolidation (such as the so-called electric resistance sintering, sre, or the so-called consolidation by electric discharge, cde, but not necessarily one of these) in substitution of the conventional route of pressing cold sintered, usually used. This achieves: (1) combining the compaction/sintering stages, significantly shortening their duration and reducing the magnitude of the working pressures, (2) carrying out the magnetic alignment, pressing/sintering, thermal treatment and magnetization steps in the same matrix, and (3) make unnecessary the use of protective atmospheres during the sintering process. (Machine-translation by Google Translate, not legally binding) La presente patente tiene por objeto presentar un nuevo método para la fabricación pulvimetalúrgica de imanes (aplicable especialmente a la fabricación de imanes que contienen tierras raras). Lo novedoso del método reside en el empleo de alguna modalidad de consolidación eléctrica (como la denominada sinterización por resistencia eléctrica, S.R.E., o la denominada consolidación por descarga eléctrica, C.D.E., pero no necesariamente una de éstas) en sustitución de la ruta convencional de prensado en frío + sinterizado, empleada habitualmente. Se logra con ello: (1) aunar las etapas de compactación/sinterizado, acortando significativamente su duración y reduciendo la magnitud de las presiones de trabajo, (2) llevar a cabo las etapas de alineamiento magnético, prensado/sinterizado, tratamiento térmico y magnetización en una misma matriz, y (3) hacer innecesario el empleo de atmósferas protectoras durante el proceso de sinterizado.</abstract><oa>free_for_read</oa></addata></record>
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subjects ALLOYS
CASTING
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
title Method for the powder metallurgical manufacture of magnets (Machine-translation by Google Translate, not legally binding)
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