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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Format | Patent |
Language | English French Japanese |
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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. |
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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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RelatedCompanies | USHIGAMI, YOSHIYUKI 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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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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