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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 11060163 B1

PDFFull Text
Date of Patent:
Jul. 13, 2021

Filed:

Dec. 23, 2016

Method for refining magnetic domains of grain-oriented electrical steel plates, and apparatus therefor

Applicant:

Posco, Pohang-si, KR;

Inventors:

Seong Cheol Hong, Pohang-si, KR;

Jae Kyoum Kim, Pohang-si, KR;

Ki Young Min, Pohang-si, KR;

Se Min Park, Pohang-si, KR;

Myung Sik Chun, Pohang-si, KR;

Gyoo Taek Lee, Pohang-si, KR;

Oh Yeoul Kwon, Pohang-si, KR;

Hyun Chui Park, Pohang-si, KR;

Assignee:

POSCO, Pohang-si, KR;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Xiaowei Su

Int. Cl.
CPC ...
C21D 10/00 (2006.01); B23K 26/00 (2014.01); B23K 26/08 (2014.01); C21D 8/12 (2006.01); B23K 26/354 (2014.01); B23K 26/12 (2014.01); B23K 26/142 (2014.01); B23K 26/359 (2014.01); B23K 26/364 (2014.01); B23K 37/047 (2006.01); B23K 26/082 (2014.01); B23K 26/04 (2014.01); B23K 26/03 (2006.01); B23K 26/40 (2014.01); B23K 26/70 (2014.01); B23K 26/16 (2006.01); B23K 101/16 (2006.01); B23K 103/04 (2006.01);
U.S. Cl.
CPC ...
C21D 10/00 (2013.01); B23K 26/0006 (2013.01); B23K 26/03 (2013.01); B23K 26/048 (2013.01); B23K 26/0821 (2015.10); B23K 26/0846 (2013.01); B23K 26/0876 (2013.01); B23K 26/123 (2013.01); B23K 26/127 (2013.01); B23K 26/142 (2015.10); B23K 26/16 (2013.01); B23K 26/354 (2015.10); B23K 26/359 (2015.10); B23K 26/364 (2015.10); B23K 26/40 (2013.01); B23K 26/706 (2015.10); B23K 37/047 (2013.01); C21D 8/12 (2013.01); C21D 8/1244 (2013.01); C21D 8/1277 (2013.01); C21D 8/1294 (2013.01); B23K 2101/16 (2018.08); B23K 2103/04 (2018.08); C21D 2201/05 (2013.01);
Abstract

Provided is a method for refining magnetic domains of grain-oriented electrical steel plates including: a steel plate supporting roll position adjusting step of controlling a vertical direction position of the steel plate while supporting the steel plate; a laser radiating step of melting the steel plate by radiating a laser beam to form grooves on the surface of the steel plate; and a setting and maintaining step of setting and maintaining an internal operation environment of a laser room in which the laser radiation is performed, so as to increase magnetic domain refinement efficiency and improve workability by optimizing equipment and processes, thereby increasing the processing capacity.

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