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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11072838 B1

PDFFull Text
Date of Patent:
Jul. 27, 2021

Filed:

Dec. 26, 2016

Method and device for magnetic domain refinement of oriented electrical steel plate

Applicant:

Posco, Pohang-si, KR;

Inventors:

Seung Ho Lim, Pohang-si, KR;

Do Ryun Lee, Pohang-si, KR;

Jin Ho Kim, Pohang-si, KR;

Myung Sik Chun, Pohang-si, KR;

Gyoo Taek Lee, Pohang-si, KR;

Seong Cheol Hong, Pohang-si, KR;

Assignee:

POSCO, Pohang-si, KR;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Xiaowei Su

Int. Cl.
CPC ...
C21D 9/56 (2006.01); B23K 26/08 (2014.01); B23K 26/14 (2014.01); C21D 6/00 (2006.01); C21D 10/00 (2006.01); B23K 26/354 (2014.01); B23K 26/364 (2014.01); C21D 8/12 (2006.01); B23K 26/142 (2014.01); B23K 37/047 (2006.01); B23K 26/12 (2014.01); B23K 26/03 (2006.01); B23K 26/40 (2014.01); B23K 26/359 (2014.01); B23K 26/04 (2014.01); B23K 26/082 (2014.01); B23K 26/70 (2014.01); B23K 103/04 (2006.01); B23K 101/16 (2006.01);
U.S. Cl.
CPC ...
C21D 9/56 (2013.01); B23K 26/03 (2013.01); B23K 26/048 (2013.01); B23K 26/08 (2013.01); B23K 26/0821 (2015.10); B23K 26/0846 (2013.01); B23K 26/123 (2013.01); B23K 26/127 (2013.01); B23K 26/14 (2013.01); B23K 26/142 (2015.10); B23K 26/354 (2015.10); B23K 26/359 (2015.10); B23K 26/364 (2015.10); B23K 26/40 (2013.01); B23K 26/703 (2015.10); B23K 37/047 (2013.01); C21D 6/008 (2013.01); C21D 8/12 (2013.01); C21D 8/1277 (2013.01); C21D 8/1294 (2013.01); C21D 10/00 (2013.01); B23K 2101/16 (2018.08); B23K 2103/04 (2018.08);
Abstract

To optimize equipment and processes to enhance magnetic domain refinement efficiency and to enhance workability to improve processing capability, a method of refining a magnetic domain of a grain-oriented electrical steel plate includes zigzag controlling for transferring the steel plate without being inclined in right and left directions along a production line center, steel plate support roll position adjusting for controlling a position of the steel plate in up and down directions while supporting the steel plate, laser beam irradiating for irradiating a laser beam to a surface of the steel plate to melt the steel plate to form a groove in the surface of the steel plate, and removing for absorbing and removing radiant heat due to reflection of the laser beam irradiated to the surface of the steel plate during the laser beam irradiating.

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