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公开(公告)号：EP2743365A4
公开(公告)日：2015-12-09
申请号：EP13779056
申请日：2013-04-18
发明人： ISHIZUKA KIYOKAZU , KUBO YUJI , NAKATSUKA JUN , NAGASAKI SHUJI
CPC分类号： H01M4/662 , B21B1/40 , B32B15/013 , B32B15/015 , C21D8/0436 , C21D8/0478 , C21D9/46 , C21D2211/004 , C21D2251/02 , C22C19/03 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C25D5/34 , C25D5/36 , C25D7/0614 , H01M4/82 , H01M10/0525
摘要： A steel foil according to an aspect of the present invention includes, by mass%, C: 0.0001 to 0.02%; Si: 0.001 to 0.01%; Mn: 0.01 to 0.3%; P: 0.001 to 0.02%; S: 0.0001 to 0.01%; Al: 0.0005 to 0.1%; N: 0.0001 to 0.004%; and a balance consisting of Fe and impurities, wherein a thickness is 5 to 15 µm, and a tensile strength is more than 900 MPa and 1,200 MPa or less.
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公开(公告)号：EP2770079A4
公开(公告)日：2015-09-30
申请号：EP13778678
申请日：2013-04-18
发明人： ISHIZUKA KIYOKAZU , KUBO YUJI , NAKATSUKA JUN , NAGASAKI SHUJI
IPC分类号： C22F1/10 , B21B1/38 , B32B15/01 , C21D1/26 , C21D8/04 , C21D9/46 , C22C19/03 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22F1/00 , C23C2/28 , C25D5/26 , C25D5/48 , C25D5/50 , C25D7/06 , H01M4/66
CPC分类号： B32B15/015 , B21B1/38 , B21B2001/383 , C21D1/26 , C21D8/0473 , C21D8/0478 , C21D9/46 , C21D2201/05 , C21D2251/02 , C22C19/03 , C22C38/001 , C22C38/004 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22F1/10 , C23C2/28 , C25D5/48 , C25D7/0614 , H01M4/662 , Y10T428/12438
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公开(公告)号：EP3109334A4
公开(公告)日：2017-11-15
申请号：EP15748546
申请日：2015-02-16
发明人： UNNO HIROTO , TERASHIMA SHINICHI , INAGUMA TORU , NOSE KOICHI , FUJIMOTO NAOKI , SAWAKI NAOYA , NAGASAKI SHUJI
CPC分类号： C21D9/0068 , B32B15/18 , B32B2457/10 , C21D1/74 , C21D6/002 , C21D8/005 , C21D8/0236 , C21D8/0257 , C21D8/0273 , C21D9/46 , C21D2211/001 , C21D2211/005 , C22C38/00 , H01M2/0285
摘要： The present invention has as its object to provide thickness 60 µm or less ultra-thin stainless steel foil which secures high thickness precision and simultaneously secures plastic deformability and good elongation at break, that is, secures good press-formability (deep drawability). The present invention solves this problem by ultra-thin stainless steel foil which has three or more crystal grains in a thickness direction, has a recrystallization rate of 90% to 100%, and has a nitrogen concentration of a surface layer of 1.0 mass% or less. For this reason, there is provided a method of production of stainless steel foil comprising rolling stainless steel sheet, then performing final annealing and making a thickness 5 µm to 60 µm, wherein a rolling reduction ratio at rolling right before final annealing is 30% or more, a temperature of final annealing after rolling is 950°C to 1050°C in the case of austenitic stainless steel and 850°C to 950°C in the case of ferritic stainless steel, and a nitrogen content in atmospheric gas in final annealing is 0.1 vol% or less, whereby ultra-thin stainless steel foil can be produced.
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