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Title:
PROCESS FOR MANUFACTURING GRAIN-ORIENTED SILICON STEEL SHEET OF HIGH MAGNETIC FLUX DENSITY
Document Type and Number:
WIPO Patent Application WO/2008/032483
Kind Code:
A1
Abstract:
A process comprising casting a bar of intermediate thickness by the use of continuous casting-hot rolling equipment; causing the bar to reach an entrance of hot finish rolling while keeping a temperature exceeding 1200°C at which the bar retains its state of containing AlN in solid solution; and carrying out hot rolling and quenching of the bar so as to effect precipitation of fine AlN, thereby accomplishing efficient production of a grain-oriented silicon steel sheet of high magnetic flux density at low cost without the need to perform high-temperature heating of the bar at all.

Inventors:
SAKAKURA AKIRA (JP)
TAKECHI HIROSHI (JP)
Application Number:
PCT/JP2007/062183
Publication Date:
March 20, 2008
Filing Date:
June 11, 2007
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
SAKAKURA AKIRA (JP)
TAKECHI HIROSHI (JP)
International Classes:
C21D8/12; B21B3/02; C21D9/46; C22C38/00; C22C38/60; H01F1/16; H01F41/02
Foreign References:
JPH02121704A1990-05-09
US1965559A1934-07-03
JPS334710B1
US3159511A1964-12-01
JPH05117751A1993-05-14
JPH02258922A1990-10-19
JP2000500568A2000-01-18
Other References:
J. E. MAY; D. TURNBULL, TRANS. AIME., vol. 212, 1958, pages 769
SAITO ET AL., JOURNAL OF THE JAPAN INSTITUTE OF METALS, vol. 27, 1963, pages 191
C. G. DUNN, ACTA METALLURGICA, vol. 1, 1953, pages 163
FERRUM, vol. 9, no. 2, 2004, pages 52
MATERIAL SCIENCE FORUM, vol. 204-206, no. PT1, 1996, pages 143
Attorney, Agent or Firm:
AOKI, Atsushi et al. (Toranomon 37 Mori Bldg. 5-1,Toranomon 3-chome, Minato-k, Tokyo 23, JP)
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