专利名称：METHOD AND DEVICE FOR MAGNETIC
DOMAIN REFINEMENT OF ORIENTEDELECTRICAL STEEL PLATE
发明人：Gyoo Taek LEE,Myung Sik CHUN,Seong
Cheol HONG,Ki Young MIN
申请号：US16072171申请日：20161223
公开号：US20190070693A1公开日：20190307
专利附图：
摘要：By optimizing equipment and processing, magnetic domain miniaturization
efficiency can be increased, workability can be improved, and processing ability can beincreased through same. Provided is a method for miniaturizing the magnetic domains ofa directional electric steel plate, the method comprising: a steel plate supporting rollposition adjusting step of controlling the vertical direction position of a steel plate whilesupporting the steel plate progressing along a production line; and a laser emitting stepof melting the steel plate by emitting a laser beam to form grooves on the surface of thesteel plate, wherein the laser emitting step includes an angle changing step of changingan emitting line angle of the laser beam with respect to a width direction of the steelplate while an optical system emitting the laser beam onto the steel plate is rotated withrespect to the steel plate, and a focal distance maintaining step of changing a tilt of thesteel plate supporting roll which supports the steel plate according to a change in focaldistance of the laser beam in the width direction of the steel plate.
申请人：POSCO
地址：Pohang-si, Gyeongsangbuk-do KR
国籍：KR
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