SIST EN 10332:2003
(Main)Magnetic materials - Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties
Magnetic materials - Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties
This European standard specifies the method of measurement of the magnetic flux density, magnetic polarization and the magnetic field strength and also the determination of the demagnetization curve and recoil line of permanent magnet materials, such as those specified in IEC 404-8-1, the properties of which are presumed homogeneous throughout their volume.
The performance of a magnetic system is not only dependent on the properties of the permanent magnet material but also on the dimensions of the system, the air-gap and other elements of the magnetic circuit. The methods described in this standard refer to the measurement on the magnetic properties in a closed magnetic circuit simulating a ring.
Magnetische Werkstoffe - Dauermagnet- (hartmagnetische) Werkstoffe - Verfahren zur Messung der magnetischen Eigenschaften
Diese Europäische Norm definiert Verfahren zur Messung der magne-tischen Flussdichte, der ma-gnetischen Polarisation und der magneti-schen Feldstärke sowie zur Bestimmung der Entmagnetisie-rungskurve und der rückläufigen Kurve von Dauermagnetwerkstoffen, wie sie in IEC 60404-8-1 spezifi-ziert sind. Die Eigenschaften der Dauermagnetwerkstoffe werden als homogen über ihr ganzes Volumen vorausge-setzt.
Das Verhalten eines Magnetsystems ist nicht nur von den Eigenschaften des Dauermagnetwerk-stoffs ab-hängig, sondern auch von den Abmessungen des Systems, dem Luftspalt und anderen Teilen des magneti-schen Kreises. Die in dieser Norm beschriebenen Verfahren beziehen sich auf die magnetischen Eigen-schaften in einem geschlossenen magnetischen Kreis, der einen Ring nach-bildet.
Matériaux magnétiques - Matériaux pour aimants permanents (magnétiquement durs) - Méthodes de mesure des propriétés magnétiques
La présente Norme européenne spécifie la méthode de mesure de l'induction magnétique, de la polarisation magnétique et de l'intensité du champ magnétique, ainsi que la détermination de la courbe de désaimantation et la droite de recul des matériaux pour aimants permanents, comme ceux qui sont spécifiés dans la CEI 60404-8-1, dont les propriétés sont supposées homogènes dans tout leur volume.
La performance d'un système magnétique ne dépend pas seulement des propriétés du matériau pour aimant permanent mais également des dimensions du système, de l'entrefer et des autres éléments du circuit magnétique. Les méthodes décrites dans la présente norme se rapportent à la mesure des propriétés magnétiques en circuit magnétique fermé, simulant un tore.
Magnetni materiali – Trajnomagnetni (trdomagnetni) materiali – Metode za merjenje magnetnih lastnosti
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Magnetic materials - Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic propertiesMagnetni materiali – Trajnomagnetni (trdomagnetni) materiali – Metode za merjenje magnetnih lastnostiMatériaux magnétiques - Matériaux pour aimants permanents (magnétiquement durs) - Méthodes de mesure des propriétés magnétiquesMagnetische Werkstoffe - Dauermagnet- (hartmagnetische) Werkstoffe - Verfahren zur Messung der magnetischen EigenschaftenTa slovenski standard je istoveten z:EN 10332:2003SIST EN 10332:2003en29.030Magnetni materialiMagnetic materialsICS:SLOVENSKI
STANDARDSIST EN 10332:200301-november-2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10332May 2003ICS 29.030English versionMagnetic materials - Permanent magnet (magnetically hard)materials - Methods of measurement of magnetic propertiesMatériaux magnétiques - Matériaux pour aimantspermanents (magnétiquement durs) - Méthodes de mesuredes propriétés magnétiquesMagnetische Werkstoffe - Dauermagnet- (hartmagnetische)Werkstoffe - Verfahren zur Messung der magnetischenEigenschaftenThis European Standard was approved by CEN on 7 February 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10332:2003 E
Influence of the air-gap between the test specimen and the pole pieces.13
(5)and122,1HH
(6)whereP2is the maximum attainable value of (BH)max, in joules per cubic metre, or of coercivity HcB in amperesper metre ;P1is the lower value of (BH)max, in joules per cubic metre, or of coercivity HcB in amperes per metre ;H2is the magnetic field strength corresponding to P2, in amperes per metre ;H1is the magnetic field strength corresponding to P1, in amperes per metre.In the special case of H2/H1 = 1,5, relationships (4) et (5) become P2
1,01 P1.In any cases, the magnetization process shall not cause the test specimen to be heated excessively.5 Test specimenThe test specimen shall have a simple shape (for example a right cylinder or parallelepiped). The length l of thetest specimen shall be not less than 5 mm and its other dimensions shall be a minimum of 5 mm and shall be suchthat the test specimen and the sensing devices shall be within the diameter d2 as defined in clause 3.The end faces of the test specimen shall be made as nearly as possible parallel to each other and perpendicular tothe test specimen axis to reduce the air-gap (see Annex A).The cross-sectional area of the test specimen shall be as uniform as possible throughout its length ; any variationshall be less than 1 % of its minimum cross-sectional area. The mean cross-sectional area shall be determined towithin 1 %.The test specimen shall be marked with the direction of magnetization.6 Determination of the magnetic flux densityThe changes in magnetic flux density in the test specimen are determined by integrating the voltages induced in asearch coil.The search coil shall be wound as closely as possible to the test specimen and symmetrical with respect to the polefaces. The leads shall be tightly twisted to avoid errors caused by voltages induced in loops in the leads.The total error of measuring the magnetic flux density shall be not greater than ± 2 %.The variation of the apparent magnetic flux density Bap, uncorrected for air flux, between the two instants t1 and t2is given by :21112apttdtUANBBB(7)whereB2is the magnetic flux density at the instant t2, in teslas ;
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