Invention Grant
- Patent Title: Cold rolled steel sheet
- Patent Title (中): 冷轧钢板
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Application No.: US13824772Application Date: 2011-09-27
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Publication No.: US09321246B2Publication Date: 2016-04-26
- Inventor: Katsuya Hoshino , Shinji Ootsuka , Takayoshi Yano , Tatsuya Miyoshi
- Applicant: Katsuya Hoshino , Shinji Ootsuka , Takayoshi Yano , Tatsuya Miyoshi
- Applicant Address: JP Tokyo
- Assignee: JFE Steel corporation
- Current Assignee: JFE Steel corporation
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JP2010-217990 20100929
- International Application: PCT/JP2011/071956 WO 20110927
- International Announcement: WO2012/043511 WO 20120405
- Main IPC: B32B15/06
- IPC: B32B15/06 ; B32B15/18 ; C10M169/04 ; C08G18/64 ; C08G18/80 ; C09D175/04 ; C09D175/06 ; C10M111/04 ; B05D1/28

Abstract:
In order to obtain a cold rolled steel sheet having excellent press formability, a cold rolled steel sheet has, on a surface thereof, an organic-inorganic composite film containing: an organic resin; and a crystalline layered material. The organic-inorganic composite film has an average film thickness of 0.10 to 2.0 μm and contains 0.5 part or more by weight of the crystalline layered material as a solid with respect to 100 parts by weight of a solid of the organic resin. The crystalline layered material preferably is, for example, a layered double hydroxide represented by [M2+1-xM3+x(OH)2][An−]x/n.zH2O, where: M2+ is one or more of Mg2+, Ca2+, Fe2+, Ni2+, and Zn2+; M3+ is one or more of Al3+, Fe3+, and Cr3+; and An− is one or more of OH−, CO32−, Cl−, and (SO4)2−.
Public/Granted literature
- US20140147663A1 COLD ROLLED STEEL SHEET Public/Granted day:2014-05-29
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