Title:
LOW-MAGNETOSTRICTIVE ORIENTED SILICON STEEL AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/148468
Kind Code:
A1
Abstract:
A manufacturing method for a low-magnetostrictive oriented silicon steel. The oriented silicon steel comprises a silicon steel substrate and an insulating coating on the surface of the silicon steel substrate. The manufacturing method comprises: performing single-sided laser etching on a silicon steel substrate, wherein the side of the silicon steel substrate, on which single-sided laser etching is performed, is a first surface, and the side arranged opposite to the first surface is a second surface; determining a deflection difference between the first surface and the second surface on the basis of the power of the laser etching, and determining an insulating coating amount difference between the first surface and the second surface on the basis of the deflection difference; forming insulating coatings on the first surface and the second surface, wherein an insulating coating amount on the second surface is greater than an insulating coating amount on the first surface, and the insulating coating amounts on the first surface and the second surface satisfy the insulating coating amount difference. By means of the manufacturing method in the present invention, the problem of there being a relatively large deviation between two magnetostrictive sides of oriented silicon steel caused by a single-sided laser notch can be solved. Further disclosed is an oriented silicon steel manufactured by means of the above-mentioned manufacturing method. A transformer iron core prepared from the oriented silicon steel enables a transformer to have low noise during operation.
Inventors:
WU MEIHONG (CN)
LI GUOBAO (CN)
CHU SHUANGJIE (CN)
ZHAO ZIPENG (CN)
LIU BAOJUN (CN)
SHEN KANYI (CN)
YANG YONGJIE (CN)
HU ZHUOCHAO (CN)
JI YAMING (CN)
LING CHEN (CN)
LI GUOBAO (CN)
CHU SHUANGJIE (CN)
ZHAO ZIPENG (CN)
LIU BAOJUN (CN)
SHEN KANYI (CN)
YANG YONGJIE (CN)
HU ZHUOCHAO (CN)
JI YAMING (CN)
LING CHEN (CN)
Application Number:
PCT/CN2022/071200
Publication Date:
July 14, 2022
Filing Date:
January 11, 2022
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
H01F1/18; B23K26/362; C21D1/26; C21D6/00; C21D8/12; C21D9/00; C22C38/02
Foreign References:
| US4363677A | 1982-12-14 | |||
| CN103080352A | 2013-05-01 | |||
| CN105339510A | 2016-02-17 | |||
| CN111748731A | 2020-10-09 | |||
| CN107210109A | 2017-09-26 | |||
| JP2009263782A | 2009-11-12 | |||
| CN106460111A | 2017-02-22 | |||
| JP2012052233A | 2012-03-15 | |||
| CN104203486A | 2014-12-10 | |||
| JP2012031519A | 2012-02-16 | |||
| CN107210109A | 2017-09-26 | |||
| CN106460111A | 2017-02-22 | |||
| CN106029917A | 2016-10-12 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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