Title:
LASER SCRIBING METHOD FOR LOW-IRON-LOSS ORIENTED SILICON STEEL PLATE, AND ORIENTED SILICON STEEL PLATE
Document Type and Number:
WIPO Patent Application WO/2024/012439
Kind Code:
A1
Abstract:
Disclosed in the present invention is a laser scribing method for an oriented silicon steel plate. When the laser scribing method is used for performing surface laser scribing on an oriented silicon steel plate, a plurality of focused light spots corresponding to each length position in a rolling direction of the oriented silicon steel plate are formed on a surface of the oriented silicon steel plate in a laser beam splitting manner. The plurality of focused light spots are distributed in a width direction of the oriented silicon steel plate, and there is an energy gap region between every two focused light spots, wherein the dimension b of each focused light spot in the width direction of the oriented silicon steel plate is greater than the dimension a thereof in the lengthwise direction of the oriented silicon steel plate Correspondingly, further disclosed in the present invention is an oriented silicon steel plate, which is prepared by using the laser scribing method in the present invention. By means of the oriented silicon steel plate, the loss of a surface coating is avoided while the iron loss of oriented silicon steel is reduced.
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Inventors:
ZHAO ZIPENG (CN)
LI GUOBAO (CN)
XIANG BANGLIN (CN)
MA CHANGSONG (CN)
SUN HUANDE (CN)
WU MEIHONG (CN)
JI YAMING (CN)
LING CHEN (CN)
LIU HAI (CN)
LI GUOBAO (CN)
XIANG BANGLIN (CN)
MA CHANGSONG (CN)
SUN HUANDE (CN)
WU MEIHONG (CN)
JI YAMING (CN)
LING CHEN (CN)
LIU HAI (CN)
Application Number:
PCT/CN2023/106738
Publication Date:
January 18, 2024
Filing Date:
July 11, 2023
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C21D8/12
Foreign References:
| CN110323044A | 2019-10-11 | |||
| CN110093486A | 2019-08-06 | |||
| CN107012303A | 2017-08-04 | |||
| CN111684087A | 2020-09-18 | |||
| CN101415847A | 2009-04-22 | |||
| US20200362433A1 | 2020-11-19 | |||
| JP2003034822A | 2003-02-07 | |||
| JPH0790385A | 1995-04-04 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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