Title:
高強度薄鋼板の製造方法
Document Type and Number:
Japanese Patent JP4507640
Kind Code:
B2
Abstract:
To provide a high strength thin steel sheet excellent in fatigue strength and formability by satisfying both of the fatigue characteristic and the formability.
In the high strength thin steel sheet provided with simple state surface formation having 0.3-1.5 μm Ra, this steel sheet is provided with a range having ≥100 MPa the absolute value of a compressed residual stress on the surface layer part in the range of 2-10% sheet thickness.
COPYRIGHT: (C)2005,JPO&NCIPI
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Inventors:
Yukio Kimura
Masayasu Ueno
Yasuhiro Soya
Masayasu Ueno
Yasuhiro Soya
Application Number:
JP2004060841A
Publication Date:
July 21, 2010
Filing Date:
March 04, 2004
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B24C1/10; C21D7/06; B21D31/06; C22C38/00
Domestic Patent References:
| JP2002285237A | ||||
| JP2003311314A |
Attorney, Agent or Firm:
Kenichiro Ochiai
Kazuhiro Mori
Kazuhiro Mori