DIRECTIONAL HOT ROLLED MAGNETIC STEEL SHEET OR STRIP WITH EXTREMELY HIGH ADHERENCE TO COATING AND PROCESS FOR PRODUCING THE SAME

WIPO Patent Application WO/2003/087420

A1

A unidirectional hot rolled magnetic steel sheet or strip or two-way directional hot rolled magnetic steel sheet or strip as a soft magnetic material for use in electrical appliances. In particular, a directional hot rolled magnetic steel sheet or strip with extremely high adherence to coating, which steel sheet or strip is composed of, in terms of mass%, 2.5 to 4.5% of Si, 0.01 to 0.4% of Ti, 0.005% or less of each of C, N, S and O and the remainder consisting essentially of Fe and unavoidable impurities, characterized in that a surface thereof is provided with a coating constituted of a C compound of Ti, or Ti and at least one member of Nb, Ta, V, Hf, Zr, Mo, Cr and W; and a process for producing the same.

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HONMA HOTAKA (JP)
HIROTA YOSHIAKI (JP)
KONDO YASUMITSU (JP)
KUBO YUJI (JP)
SENUMA TAKEHIDE (JP)
NAKAMURA SHUICHI (JP)

PCT/JP2003/004039

October 23, 2003

March 28, 2003

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NIPPON STEEL CORP (JP)
HONMA HOTAKA (JP)
HIROTA YOSHIAKI (JP)
KONDO YASUMITSU (JP)
KUBO YUJI (JP)
SENUMA TAKEHIDE (JP)
NAKAMURA SHUICHI (JP)

C22C38/02; C22C38/14; H01F1/147; H01F41/02; C21D8/12; (IPC1-7): C22C38/00; C21D8/12; H01F1/16

JPS6270520A	1987-04-01
EP0193324A2	1986-09-03
JPH08279408A	1996-10-22

See also references of EP 1491648A4

Ishida, Takashi (ISHIDA & ASSOCIATES Toranomon 37 Mori Bldg., 5-1, Toranomon 3-chom, Minato-ku Tokyo, JP)

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