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1.发明专利
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公开(公告)号：JP5453884B2
公开(公告)日：2014-03-26
申请号：JP2009089937
申请日：2009-04-02
申请人： Jfeスチール株式会社
CPC分类号： C21D9/46 , C21D8/0236 , C21D8/0268 , C21D8/0273 , C22C1/002
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公开(公告)号：JP5434212B2
公开(公告)日：2014-03-05
申请号：JP2009094592
申请日：2009-04-09
申请人： Jfeスチール株式会社
CPC分类号： C22C38/04 , C21D8/0236 , C21D8/0268 , C21D8/0273 , C21D9/46 , C21D2211/004 , C22C38/001 , C22C38/02 , C22C38/06
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公开(公告)号：JP5365312B2
公开(公告)日：2013-12-11
申请号：JP2009089936
申请日：2009-04-02
申请人： Jfeスチール株式会社
CPC分类号： C21D8/0263 , B21B1/26 , C21D8/0426 , C21D8/0436 , C21D8/0442 , C21D8/0473 , C21D2211/004 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06
摘要： A steel sheet for cans that has a yield stress of at least 500 Mpa after coating and baking and a method for manufacturing the steel sheet for cans are provided. The steel sheet for cans contains, on the basis of mass percent, C: more than 0.02% but 0.10% or less, Si: 0.10% or less, Mn: 1.5% or less, P: 0.20% or less, S: 0.20% or less, Al: 0.10% or less, N: 0.0120% to 0.0250%, dissolved N being 0.0100% or more, and a remainder of Fe and incidental impurities. A high-strength material can be obtained by maintaining the absolute quantity of dissolved N at a certain value or more and performing hardening by quench aging and strain aging, for example, in a printing process, a film lamination process, or a drying and baking process performed before can manufacturing. In the manufacture, hot rolling is performed at a slab extraction temperature of 1200° C. or more and a finish rolling temperature of (Ar3 transformation temperature—30)° C. or more, and coiling is performed at 650° C. or less.
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