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Title:
STEEL HAVING EXCELLENT PICKLING PROPERTY, AND PRODUCTION METHOD THEREFOR
Document Type and Number:
Japanese Patent JP3944388
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide steel which improves pickling properties on pickling after hot rolling with steel such as bar steel and a steel sheet produced by subjecting steel such as bearing steel and low alloy steel containing 0.1 to 2 mass% Cr to hot rolling as the object.
SOLUTION: The steel is obtained by subjecting steel containing 0.1 to 2 mass% Cr to hot rolling. The boundaries between a scale layer and ferrite are provided with spinel type oxide having a composition of FeO.Cr2O3 with particle diameters of 0.1 to 5 μm in ≤5×106 pieces/cm2.


Inventors:
Mikako Takeda
Masao Toyama
Fujii Koizumi
Hitoshi Kushida
Application Number:
JP2001371594A
Publication Date:
July 11, 2007
Filing Date:
December 05, 2001
Export Citation:
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Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
B21B3/00; C22C38/00; B21B45/00; C21D8/00; C22C38/18; (IPC1-7): C22C38/00; B21B3/00; B21B45/00; C21D8/00; C22C38/18
Domestic Patent References:
JP11343541A
JP10298657A
JP11172332A
JP8001229A
JP7204703A
Attorney, Agent or Firm:
Yoshiyuki Kaji
Makoto Suhara