Method for producing grain oriented electrical steel sheet

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United States of America

PATENT NO 11946113
SERIAL NO

17421802

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Abstract

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A method for producing a grain oriented electrical steel sheet includes a decarburization annealing process where an oxidation degree PH2O/PH2 is controlled, an annealing separator applying process where a mass ratio of MgO and Al2O3 in an annealing separator is controlled, a final annealing process where hydrogen in mixed gas atmosphere is controlled to 50 volume % or more, an annealing separator removing process where water-washing is conducted using solution with inhibitor, a smoothing process where chemical-polished is conducted to control average roughness Ra, and an insulation coating forming process where insulation coating forming solution in which crystalline phosphide is included is applied.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATION6-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takatani, Shinsuke Tokyo, JP 52 16
Ushigami, Yoshiyuki Tokyo, JP 83 295

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