PRODUCTION METHOD OF GRAIN ORIENTED SILICON STEEL PLATE BY HIGH SPEED ELECTRON BEAM IRRADIATION

PROBLEM TO BE SOLVED: To accurately synchronize convergence current position control with deflection without inviting film damage of an irradiation part, thereby magnetic domain fragmentation and low core loss making are effectively achieved, even when a scan speed (deflection speed) of an electron...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAGI SHIGEHIRO, HANAZAWA KAZUHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTRICITY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSFORMERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To accurately synchronize convergence current position control with deflection without inviting film damage of an irradiation part, thereby magnetic domain fragmentation and low core loss making are effectively achieved, even when a scan speed (deflection speed) of an electron beam is made a high speed.SOLUTION: An electron beam irradiation method is that an electron beam is performed by a reciprocating scan in a straight line shape over at least 100 mm on the steel plate in a direction intersecting a rolling direction of a steel plate, and a linear recycling magnetic domain part is introduced to the steel plate, and is that in an irradiation pattern in which introduction of the recycling magnetic domain part by electron beam irradiation is made either a going process or a backing process, and when a beam scan speed of a process in which the introduction of the recycling magnetic domain part by the electron beam irradiation is performed is assumed Vp(m/s), the beam scan speed of a process in which the introduction of the recycling magnetic domain part by the electron beam irradiation is not performed is assumed Vs(m/s), the relation of the following formula (1): 30 m/s≤Vp≤Vs/3 --- (1) is satisfied about these Vp and Vs.