Nippon Steel Corporation

Yasuhiro Shinkai

Fumio Matsumoto

Kiyoshi Ueno

Hiromichi Koshiishi

Tetsuo Kimoto

Katuro Kuroki

Shouzou Oota

Toshimi Kawabata

Hisao Takahashi

In finish annealing process for a grain-oriented electrical steel strip or sheet, an improvement is disclosed which comprises coating the grain-oriented electrical steel strip or sheet with an annealing separator having a water content adjusted to not more than 10%, drying the coated strip or sheet, forming it into a strip coil, and finish annealing the strip coil within the inner cover of an annealing furnace while controlling the pressure of the gas atmosphere within the inner cover.

Finish annealing process for grain-oriented electrical steel strip or

A method for producing high magnetic flux density grain oriented electrical steel sheets or strips having a B.sub.8 characteristic in the rolling direction of not less than 1.9 Wb/m.sup.2 by hot rolling, continuous annealing for precipitation of the AlN, cold rolling into the final thickness, decarburization annealing, and finishing annealing. The cold rolling includes a final rolling at a strong reduction between 81 and 95%.

Method for producing high magnetic flux density grain-oriented

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Kitakyushu, Japan

Yasuhiro Shinkai