ORIENTATED ELECTROMAGNETIC STEEL SHEET AND MANUFACTURING METHOD FOR SAME

Cold roll a silicon steel sheet (1) containing Si. Then, bring about primary re-crystallisation by decarburisation annealing (3) the silicon steel sheet (1). Then, roll up the silicon steel sheet (1) and obtain a steel sheet coil (31). Then, bring about secondary re-crystallisation by annealing (6)...

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Main Authors HIRANO, KOJI, USHIGAMI, YOSHIYUKI, SAKAI, TATSUHIKO, ARAI, SATOSHI
Format Patent
LanguageEnglish
French
Japanese
Published 02.02.2012
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Abstract Cold roll a silicon steel sheet (1) containing Si. Then, bring about primary re-crystallisation by decarburisation annealing (3) the silicon steel sheet (1). Then, roll up the silicon steel sheet (1) and obtain a steel sheet coil (31). Then, bring about secondary re-crystallisation by annealing (6) the steel sheet coil (31) by means of batch processing. Then, unroll and flatten the steel sheet coil (31). In between the step wherein cold rolling is carried out and the step wherein the steel sheet coil (31) is obtained, irradiate (2) a laser beam, a plurality of times and at prescribed intervals, on the surface of the silicon steel sheet (1) from one end to the other end thereof in the sheet width direction. When the secondary re-crystallisation is brought about, crystal grain boundaries are generated which pass through the front and rear of the silicon steel sheet (1) along the trajectory of the laser beam. Selon l'invention, une tôle d'acier au silicium (1) est laminée à froid. Ensuite, une recristallisation primaire est effectuée par recuit de décarburation (3) de la tôle d'acier au silicium. La tôle d'acier au silicium (1) est alors enroulée pour obtenir une bobine (31). Ensuite, une recristallisation secondaire est effectuée par recuit (6) de la bobine de tôle d'acier (31) au moyen d'un traitement par lot. La bobine de tôle d'acier (31) est alors déroulée et aplatie. Entre le laminage à froid et l'obtention de la bobine de tôle d'acier (31), la surface de la tôle d'acier au silicium (1) est irradiée (2) plusieurs fois et à intervalles prescrits par un faisceau laser d'une extrémité à l'autre dans la direction de la largeur de la tôle. La recristallisation secondaire génère des joints de grains cristallins qui vont de l'avant à l'arrière de la tôle d'acier au silicium (1) le long de la trajectoire du faisceau laser.
AbstractList Cold roll a silicon steel sheet (1) containing Si. Then, bring about primary re-crystallisation by decarburisation annealing (3) the silicon steel sheet (1). Then, roll up the silicon steel sheet (1) and obtain a steel sheet coil (31). Then, bring about secondary re-crystallisation by annealing (6) the steel sheet coil (31) by means of batch processing. Then, unroll and flatten the steel sheet coil (31). In between the step wherein cold rolling is carried out and the step wherein the steel sheet coil (31) is obtained, irradiate (2) a laser beam, a plurality of times and at prescribed intervals, on the surface of the silicon steel sheet (1) from one end to the other end thereof in the sheet width direction. When the secondary re-crystallisation is brought about, crystal grain boundaries are generated which pass through the front and rear of the silicon steel sheet (1) along the trajectory of the laser beam. Selon l'invention, une tôle d'acier au silicium (1) est laminée à froid. Ensuite, une recristallisation primaire est effectuée par recuit de décarburation (3) de la tôle d'acier au silicium. La tôle d'acier au silicium (1) est alors enroulée pour obtenir une bobine (31). Ensuite, une recristallisation secondaire est effectuée par recuit (6) de la bobine de tôle d'acier (31) au moyen d'un traitement par lot. La bobine de tôle d'acier (31) est alors déroulée et aplatie. Entre le laminage à froid et l'obtention de la bobine de tôle d'acier (31), la surface de la tôle d'acier au silicium (1) est irradiée (2) plusieurs fois et à intervalles prescrits par un faisceau laser d'une extrémité à l'autre dans la direction de la largeur de la tôle. La recristallisation secondaire génère des joints de grains cristallins qui vont de l'avant à l'arrière de la tôle d'acier au silicium (1) le long de la trajectoire du faisceau laser.
Author USHIGAMI, YOSHIYUKI
ARAI, SATOSHI
SAKAI, TATSUHIKO
HIRANO, KOJI
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DocumentTitleAlternate TÔLE D'ACIER ÉLECTROMAGNÉTIQUE ORIENTÉ ET SON PROCÉDÉ DE FABRICATION
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ARAI, SATOSHI
SAKAI, TATSUHIKO
NIPPON STEEL CORPORATION
HIRANO, KOJI
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Snippet Cold roll a silicon steel sheet (1) containing Si. Then, bring about primary re-crystallisation by decarburisation annealing (3) the silicon steel sheet (1)....
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SourceType Open Access Repository
SubjectTerms ALLOYS
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
INDUCTANCES
MAGNETS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
Title ORIENTATED ELECTROMAGNETIC STEEL SHEET AND MANUFACTURING METHOD FOR SAME
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