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1. 发明公开

EP3339463A1 FERRITIC STAINLESS STEEL FOIL 有权转让
公开(公告)号：EP3339463A1
公开(公告)日：2018-06-27
申请号：EP16837114.4
申请日：2016-08-16
申请人： Nippon Steel & Sumikin Materials Co., Ltd.
发明人： UNNO, Hiroto , SAWAKI, Naoya , FUJIMOTO, Naoki , FUKUDA, Masahiro , UNO, Tomohiro , INAGUMA, Toru
IPC分类号： C22C38/18 , B32B15/08 , B32B15/18 , C21D8/02 , C21D9/46 , H01M2/02
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°.

2. 发明公开

EP3109334A1 STAINLESS STEEL FOIL AND METHOD FOR MANUFACTURING SAME 有权转让
标题翻译： EDELSTAHLFOLIE UND VERFAHREN ZUR HERSTELLUNG DAVON
公开(公告)号：EP3109334A1
公开(公告)日：2016-12-28
申请号：EP15748546.7
申请日：2015-02-16
申请人： Nippon Steel & Sumikin Materials Co., Ltd.
发明人： UNNO, Hiroto , TERASHIMA, Shinichi , INAGUMA, Toru , NOSE, Koichi , FUJIMOTO, Naoki , SAWAKI, Naoya , NAGASAKI, Shuji
IPC分类号： C22C38/00 , B32B15/08 , C21D9/46 , 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 , C22C38/00 , 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.
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，即确保了良好的压制成形性（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，重结晶率为90％至100％，表面层的氮浓度为1.0质量％，或减。因此，提供了一种不锈钢箔的制造方法，其包括轧制不锈钢板，然后进行最终退火并制成厚度5μm至60μm，其中最终退火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，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℃，最终退火时的大气气体中的氮含量为0.1体积％以下，由此可以制造超薄不锈钢箔。

3. 发明授权

EP3109334B1 STAINLESS STEEL FOIL AND METHOD FOR MANUFACTURING SAME 有权转让
公开(公告)号：EP3109334B1
公开(公告)日：2018-12-05
申请号：EP15748546.7
申请日：2015-02-16
申请人： Nippon Steel & Sumikin Materials Co., Ltd.
发明人： UNNO, Hiroto , TERASHIMA, Shinichi , INAGUMA, Toru , NOSE, Koichi , FUJIMOTO, Naoki , SAWAKI, Naoya , NAGASAKI, Shuji
IPC分类号： C22C38/00 , B32B15/08 , C21D9/46 , 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 , C22C38/00 , 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.

4. 发明公开

EP3339461A1 STAINLESS STEEL FOIL 审中-公开
公开(公告)号：EP3339461A1
公开(公告)日：2018-06-27
申请号：EP16837137.5
申请日：2016-08-17
申请人： Nippon Steel & Sumikin Materials Co., Ltd.
发明人： UNNO, Hiroto , SAWAKI, Naoya , FUJIMOTO, Naoki , FUKUDA, Masahiro , UNO, Tomohiro , INAGUMA, Toru
IPC分类号： C22C38/00 , B32B15/08 , C21D9/48 , H01M2/02
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.

5. 发明公开

EP3339462A1 AUSTENITIC STAINLESS STEEL FOIL 有权转让
公开(公告)号：EP3339462A1
公开(公告)日：2018-06-27
申请号：EP16837138.3
申请日：2016-08-17
申请人： Nippon Steel & Sumikin Materials Co., Ltd.
发明人： UNNO, Hiroto , SAWAKI, Naoya , FUJIMOTO, Naoki , FUKUDA, Masahiro , UNO, Tomohiro , INAGUMA, Toru
IPC分类号： C22C38/00 , B32B15/08 , B32B15/18 , C21D9/46 , C22C38/58 , H01M2/02
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.

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