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1. 发明申请

US20180237882A1 AUSTENITIC STAINLESS STEEL FOIL 审中-公开
公开(公告)号：US20180237882A1
公开(公告)日：2018-08-23
申请号：US15753307
申请日：2016-08-17
申请人： NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
发明人： Hiroto UNNO , Naoya SAWAKI , Naoki FUJIMOTO , Masahiro FUKUDA , Tomohiro UNO , Toru INAGUMA
IPC分类号： C21D9/48 , B32B15/085 , H01M2/02 , C21D8/02 , C21D1/74 , C22C38/44 , C22C38/42 , C22C38/04 , C22C38/02 , C22C38/00
CPC分类号： C21D9/48 , B32B15/08 , B32B15/085 , B32B15/18 , B32B2457/10 , C21D1/74 , C21D8/0205 , C21D8/0273 , C21D9/46 , C21D2211/001 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/58 , H01M2/02 , H01M2/0202
摘要： Provided is an austenitic stainless steel foil that demonstrates a high degree of stretch formability and little deformation anisotropy with respect to stretch forming despite having a sheet thickness of 60 μm or less. The austenitic stainless steel foil of the present invention has a sheet thickness of 5 μm to 60 μm, a recrystallization rate of 90% to 100%, and a texture in which the total of the area ratio of a crystal orientation in which the difference in orientation from the {112} orientation is within 10°, the area ratio of a crystal orientation in which the difference in orientation from the {110} orientation is within 10°, and the area ratio of a crystal orientation in which the difference in orientation from the {110} orientation is within 10°, in a measuring field thereof, is 20% or less.

2. 发明申请

US20180229476A1 STAINLESS STEEL FOIL 审中-公开
公开(公告)号：US20180229476A1
公开(公告)日：2018-08-16
申请号：US15750947
申请日：2016-08-17
申请人： NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
发明人： Hiroto UNNO , Naoya SAWAKI , Naoki FUJIMOTO , Masahiro FUKUDA , Tomohiro UNO , Toru INAGUMA
IPC分类号： B32B15/08 , C21D9/48 , C22C38/00 , C21D1/74 , C21D8/02 , C25D11/38
CPC分类号： B32B15/08 , B32B2457/10 , C21D1/74 , C21D8/0236 , C21D8/0257 , C21D8/0273 , C21D9/48 , C21D2211/001 , C21D2211/005 , C22C38/00 , C25D11/38 , H01M2/02
摘要： The present invention provide a ferritic stainless steel foil having a high thickness precision even with a thickness 60 μm or less ultrathin stainless steel foil and simultaneously having a plastic deformation ability and good elongation at break, that is, having a good press-formability (deep drawing ability).The present invention is a stainless steel foil having a thickness of 5 μm to 60 μm, wherein a recrystallization ratio of said stainless steel foil is 90% to 100%, a surface layer of said stainless steel foil has a nitrogen concentration of 1.0 mass % or less, three or more crystal grains are contained in the thickness direction of said stainless steel foil, an average crystal grain diameter “d” of said crystal grains is 1 μm to 10 μm, and, when said thickness is “t” (μm), an area ratio of crystal grains having a crystal grain diameter of t/3 (μm) or more is 20% or less.

3. 发明申请

US20170009312A1 STAINLESS STEEL FOIL AND METHOD OF PRODUCTION OF SAME 审中-公开
标题翻译：不锈钢箔及其生产方法
公开(公告)号：US20170009312A1
公开(公告)日：2017-01-12
申请号：US15119194
申请日：2015-02-16
申请人： NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
发明人： Hiroto UNNO , Shinichi TERASHIMA , Toru INAGUMA , Koichi NOSE , Naoki FUJIMOTO , Naoya SAWAKI , Shuji NAGASAKI
IPC分类号： C21D9/00 , C21D1/74 , C21D8/00 , B32B15/18 , H01M2/02
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 , C22C38/40 , 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.
摘要翻译：本发明的目的是提供厚度为60μm或更小的超薄不锈钢箔，其确保了高厚度精度并同时确保了塑性变形性和良好的断裂伸长率，即确保了良好的冲压成形性（深冲性）。本发明通过在厚度方向上具有三个或更多个晶粒的超薄不锈钢箔来解决这个问题，其重结晶率为90％至100％，表层的氮浓度为1.0质量％，或减。因此，提供了一种生产不锈钢箔的方法，其包括轧制不锈钢板，然后进行最终退火并制成厚度为5μm至60μm，其中在最终退火之前轧制右侧的轧制压下率为30％或在奥氏体不锈钢的情况下，在铁素体不锈钢的情况下，轧制后的最终退火温度为950℃至1050℃，在铁素体不锈钢的情况下为850℃至950℃，大气中的氮含量最终退火中的气体为0.1体积％以下，由此可以制造超薄不锈钢箔。

4. 发明申请

US20180282834A1 FERRITIC STAINLESS STEEL FOIL 审中-公开
公开(公告)号：US20180282834A1
公开(公告)日：2018-10-04
申请号：US15570614
申请日：2016-08-16
申请人： NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
发明人： Hiroto UNNO , Naoya SAWAKI , Naoki FUJIMOTO , Masahiro FUKUDA , Tomohiro UNO , Toru INAGUMA
IPC分类号： C21D9/46 , B32B15/08 , B32B15/18 , H01M2/02 , C21D8/02 , C21D6/00
摘要： The present invention provide a ferritic stainless steel foil high in stretch-expand formability and further small in anisotropy of deformation with respect to stretch-expand forming even with ultrathin steel foil with a thickness of 60 μm or less.The present invention is a ferritic stainless steel foil having a thickness of 5 μm to 60 μm, wherein a recrystallization rate of said stainless steel foil is 90% to 100%, and in an orientation distribution function obtained by analysis of a crystalline texture of said stainless steel foil, when a Euler angle ϕ2 is 45°±10°, at the plane expressed by a Euler angle Φ of 53.4°±10°, the maximum peak strength ratio in the peak strength ratios shown by orientations corresponding to the Euler angle ϕ1 is 25 or less, where the Euler angle ϕ1 is 0 to 90°.

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