METHOD OF MANUFACTURING ULTRA-HIGH MANGNETIC FLUX DENSITY GRAIN-ORIENTED SILICON STEEL SHEET HAVING HIGH MAGNETIC FLERD IRON LOSS AND EXCELLENT FILM CHARACTERISTIC

Japanese Patent JP3388239

B2

PROBLEM TO BE SOLVED: To provide a ultara-high magnetic flux density grain-oriented silicon steel sheet having high magnetic field iron loss and excellent film characteristics and a method of manufacturing the same.
SOLUTION: The grain-oriented silicon steel sheet is characterized in that Bi exists at ≥0.01 to ≤1,000 ppm by weight at the boundary between base iron and a primary film. Such grain-oriented silicon steel sheet can be obtained by heating the steel sheet to a temperature region of ≥700°C at a heating rate of ≥100°C/s prior to decarburization annealing, then regulating the stangnaition time at ≥700°C to 1 to 20 second and controlling the atmosphere of this temperature region. The resultant grain-oriented silicon steel sheet is high in the magnetic field iron loss and excellent in the film adhesion.

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JPH04235290	SURFACE TREATED STEEL SHEET FOR DI CAN EXCELLENT IN SUITABILITY FOR PRINTING SUBSTRATE
WO/2018/075779	SURFACE MODIFICATION OF STAINLESS STEELS

Eiichi Namba
Katsuyuki Yanagihara
Satoshi Arai
Shuichi Yamazaki
Fumikazu Ando

JP2001216033A

March 17, 2003

July 16, 2001

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Nippon Steel Corporation

C23C22/00; C21D8/12; C22C38/00; C22C38/02; C22C38/06; H01F1/16; (IPC1-7): C22C38/00; C21D8/12; C22C38/02; C22C38/06; C23C22/00; H01F1/16

JP9279247A
JP10130727A
JP10130726A
JP2000345306A
JP2000109931A
JP200026942A

Hiroaki Tamura (1 outside)

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