Title:
METHOD FOR MANUFACTURING ORIENTED ELECTROMAGNETIC STEEL SHEET, AND ORIENTED ELECTROMAGNETIC STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2023/188148
Kind Code:
A1
Abstract:
A method for manufacturing an oriented electromagnetic steel sheet according to the present invention comprises: a cold rolling step in which a cold rolled steel sheet is manufactured; a finish annealing step in which the cold rolled steel sheet is subjected to finish annealing in association with secondary recrystallization; a groove formation step in which a linear groove is formed in the cold rolled steel sheet before or after the finish annealing step in a direction crossing the rolling direction of the cold rolled steel sheet; and a tension film imparting step in which a tension film is formed on a groove-formed surface of the cold rolled steel sheet by applying and baking a coating solution comprising phosphoric acid, a phosphate, a chromic anhydride, a chromate, alumina, or a silica compound in a state where the groove-formed surface is facing downward.
Inventors:
ARAI SATOSHI (JP)
HAMAMURA HIDEYUKI (JP)
SUGIYAMA KIMIHIKO (JP)
IWAKI MASATAKA (JP)
HAMAMURA HIDEYUKI (JP)
SUGIYAMA KIMIHIKO (JP)
IWAKI MASATAKA (JP)
Application Number:
PCT/JP2022/016106
Publication Date:
October 05, 2023
Filing Date:
March 30, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C23C22/00; C21D9/46; C22C38/00; C23C22/74; C23C22/77; H01F1/147
Domestic Patent References:
| WO2022013960A1 | 2022-01-20 | |||
| WO2012042865A1 | 2012-04-05 |
Foreign References:
| JP2016040028A | 2016-03-24 | |||
| JP2013186349A | 2013-09-19 | |||
| JP2005070435A | 2005-03-17 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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