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公开(公告)号：EP4265350A1
公开(公告)日：2023-10-25
申请号：EP21936032.8
申请日：2021-04-08
发明人： SUZUKI, Yuki , UENISHI, Kenta , FUJITA, Soshi , FUDA, Masahiro
摘要： To provide a steel sheet for hot stamping suitable for manufacturing, through hot-stamping working, a component having portions with different strengths, and a hot-stamped member having portions with different strengths. A steel sheet for hot stamping according to the present invention includes, on a surface of the steel sheet: a site having a surface-treated film whose emissivity at a wavelength of 8.0 µm at 25°C is 60% or more; and a site at which the surface-treated film is not provided, in which the surface-treated film contains carbon black, and one or more of oxides selected from a group consisting of a Zr oxide, a Zn oxide, and a Ti oxide, in which the carbon black and the oxides exist while being dispersed over the entire surface-treated film, the surface-treated film has a silica content of 0 to 0.3 g/m 2 , and when an adhesion amount of the carbon black and an adhesion amount of the oxides are set to X CB (g/m 2 ) and X Oxide (g/m 2 ), respectively, an equation (1) below is satisfied.
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公开(公告)号：EP3564409A1
公开(公告)日：2019-11-06
申请号：EP17886827.9
申请日：2017-12-21
发明人： KUBO, Masahiro , NAKAZAWA, Yoshiaki , SUZUKI, Toshiya , NOMURA, Narihiko , FUJITA, Soshi , IRIKAWA, Hideaki
IPC分类号： C23C28/00 , B21D22/20 , B21D22/26 , C21D1/18 , C21D9/00 , C22C21/02 , C22C38/00 , C22C38/14 , C23C2/12
摘要： Provided are a plated steel sheet for hot stamping including: a plated steel sheet body including a steel sheet and an aluminum plating layer provided on one side or both sides of the steel sheet; and a zinc-based metal soap film provided on a surface of the plated steel sheet body on a side of the aluminum plating layer and having an adhesion amount of from 7.1 to 19.8 g/m 2 based on a Zn amount (when, in the plated steel sheet body, a zinc oxide film is on the surface of an aluminum plating layer, the total adhesion amount of the zinc oxide film and the zinc-based metal soap film is from 7.1 to 19.8 g/m 2 based on a Zn amount.), and a method of manufacturing such a sheet. Also provided are a method of manufacturing a hot-stamped component using the plated steel sheet for hot stamping, and a method of manufacturing a vehicle using a stamped component manufactured by a method of manufacturing a hot-stamped component.
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公开(公告)号：EP2431171A1
公开(公告)日：2012-03-21
申请号：EP10775013.5
申请日：2010-05-10
IPC分类号： B32B15/08 , C09D5/08 , C09D7/12 , C09D201/00 , C23C26/00
CPC分类号： C09D5/08 , B05D7/54 , B05D2202/00 , B05D2701/00 , Y10T428/31605 , Y10T428/31663 , Y10T428/31678 , Y10T428/31692
摘要： A surface-treated metal material, comprising: a metal material, and a coating film disposed on the surface thereof, the coating film containing (A) an organic resin having a glass transition temperature of more than 35°C and not more than 100°C, and (B) an organic resin having a glass transition temperature of more than 100°C and not more than 250°C; wherein the difference between the glass transition temperatures of the organic resins (A) and (B) is 50°C or more. There are provided a surface-treated metal material having a coating film which contains no environmental load substance such as hexavalent chromium, and is particularly excellent in scratch resistance, press formability, and corrosion resistance after the shape processing thereof, and also a process for producing such a surface-treated metal material.
摘要翻译： 一种经表面处理的金属材料，包括：金属材料和设置在其表面上的涂膜，所述涂膜含有（A）玻璃化转变温度高于35℃且不大于100℃的有机树脂 （B）玻璃化转变温度在100℃以上250℃以下的有机树脂， 其中有机树脂（A）和（B）的玻璃化转变温度之差为50℃以上。 提供了具有不含环境负荷物质如六价铬的涂膜的表面处理金属材料，并且其形状加工后的耐划伤性，冲压成型性和耐腐蚀性特别优异，以及其制造方法 这种经表面处理的金属材料。
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公开(公告)号：EP4140613A1
公开(公告)日：2023-03-01
申请号：EP21792241.8
申请日：2021-04-20
发明人： FUJITA, Soshi , SUZUKI, Yuki , FUDA, Masahiro , IRIKAWA, Hideaki , KUBO, Masahiro , NOMURA, Naruhiko
IPC分类号： B21D22/20 , C21D1/18 , C21D9/00 , C22C21/02 , C22C38/00 , C22C38/60 , C23C2/12 , C23C2/28 , C23C26/00 , C23C28/00
摘要： This manufacturing method of a hot press-formed article includes a heating step of heating an Al-plated steel sheet and a forming step of obtaining a hot press-formed article using a die after the heating step, the Al-plated steel sheet has a base steel sheet, an Al plating layer, and a coating layer, the coating layer is a metal layer containing at least one metal of Mg, Ca, V, Ti, and Zn, a metal oxide layer containing an oxide of one or more of Mg, Ca, V, Ti, and Zn, or a mixed layer including the metal layer and the metal oxide layer, the die has a hard layer on a surface, HV Die that is a surface hardness of the die at a position of the hard layer is HV1500 or more and HV3800 or less, and a temperature Tm of the Al-plated steel sheet at a start of forming and an average movement velocity V of the die in the forming step satisfy 800 - (HV Die /40) ≤ Tm ≤ 850 - (V/4) - (HV Die /100).
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公开(公告)号：EP4155427A1
公开(公告)日：2023-03-29
申请号：EP21809842.4
申请日：2021-03-24
发明人： YAMAGUCHI, Shinichi , FUJITA, Soshi
摘要： Provided is an Al-plated hot stamped steel material comprising a steel base material, an Al-plating layer formed on at least one surface of the steel base material, and a chemical conversion coating formed on the Al-plating layer and containing zinc phosphate-based crystals and Ce-based compounds deposited on the surfaces of the zinc phosphate-based crystals, wherein an amount of deposition of the zinc phosphate-based crystals in the chemical conversion coating is, converted to metal Zn, 0.3 to 4.0 g/m 2 and an area ratio of the Ce-based compounds in the chemical conversion coating is 0.5 to 25%.
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6.发明公开
公开(公告)号：EP4082687A1
公开(公告)日：2022-11-02
申请号：EP21761781.0
申请日：2021-02-24
发明人： FUJITA, Soshi , SUZUKI, Yuki , FUDA, Masahiro , IRIKAWA, Hideaki , MAKI, Jun , YOSHIKAWA, Nobuo , NOMURA, Naruhiko
摘要： To solve a problem about warpage of a steel sheet due to a difference in temperature raising rate between an overlapped part and a one-sheet part. This manufacturing method includes: a step of heating an overlapped blank; a step of transferring the heated overlapped blank; and a step of performing presswork on the heated overlapped blank by using a die, in which in the heating step, when sheet thicknesses of the first and second steel sheets are set to t1 and t2, respectively, and an average heating rate at a sheet temperature from 20 to 800°C of a portion with a total sheet thickness (tl + t2) of an overlapped portion, and that of a non-overlapped portion are set to V and vl, respectively, the total sheet thickness (tl + t2) is 2.5 to 5.0 mm, a maximum length L of the overlapped portion is 100 to 1100 mm, an area S1 of the first steel sheet, an area S2 of a portion, of the second steel sheet, which is overlapped with the first steel sheet, and the average heating rates V and v1 satisfy Expressions (1) to (3), and the heating is performed at a heating temperature and for a heating time within a specific range on a plane of coordinates defined by the heating time and the heating temperature.
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7.发明公开
公开(公告)号：EP3778060A1
公开(公告)日：2021-02-17
申请号：EP19785517.4
申请日：2019-04-09
摘要： A method of producing a hot press-formed product includes subjecting an Al-plated steel sheet 10 having a zinc compound layer or a metallic zinc layer, as an outermost layer, provided on an A1 plating layer to hot press forming using a die 11. The die 11 includes a hard layer 11C having a skewness (Rsk), as measured in a direction from the outside of a die hole toward the inside of the die hole 11D, of 1.3 or less and a hardness Hv_Die of HV 2,000 or more, over the entirety of a region of a steel sheet contact surface 11A that is adjacent to a die shoulder portion 11B. The steel sheet contact surface 11A is a surface located outside of the die hole 11D and configured to contact the Al-plated steel sheet 10 that is to be subjected to the hot press forming.
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公开(公告)号：EP4321647A1
公开(公告)日：2024-02-14
申请号：EP22784433.9
申请日：2022-03-14
发明人： DOI, Takashi , KOBAYASHI, Kenji , INATOMI, Naomi , SUZUKI, Yuki , FUJITA, Soshi , FUDA, Masahiro
摘要： A hot-stamped product with improved delayed-fracture resistance is provided. The hot-stamped product 1 includes: a steel substrate 10; and an Al film 20 formed on the steel substrate 10, the Al film 20 including: an interface layer 21 located at the interface with the steel substrate 10 and with part of the aFe substituted by Al and Si; an intermediate layer 22 formed on the interface layer 21; and an oxide layer formed on the intermediate layer, the intermediate layer 22 including an Fe-Al-Si phase 22a with part of the aFe substituted by Al and Si, the Fe-Al-Si phase 22a including one or more elements selected from the group consisting of Zr, Ce, Y, Ta, Ni, Cu, Nb, Cr, Co, V and Ti, the oxide layer 23 including one or more elements selected from the group consisting of Be, Mg, Ca, Sr, Ba, Sc and Zn.
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公开(公告)号：EP4155004A1
公开(公告)日：2023-03-29
申请号：EP20936971.9
申请日：2020-05-18
发明人： KONNO, Michiko , MAKI, Jun , YAMAGUCHI, Shinichi , FUJITA, Soshi
摘要： Provided is a hot stamped body comprising a steel base material, an Al-plating layer formed on at least one surface of the steel base material, a coating formed on the Al-plating layer and containing ZnO particles and CeO 2 particles having an average particle size smaller than an average particle size of the ZnO particles, and a Zn- and Al-containing complex oxide layer formed between the Al-plating layer and the coating. Further, provided is a method for producing a hot stamped body comprising forming an Al-plating layer on at least one side of a steel sheet, coating a surface of the Al-plating layer with an aqueous solution containing ZnO particles and CeO 2 particles, then heating it to form a coating containing ZnO particles and CeO 2 particles on the Al-plating layer, and hot pressing the steel sheet. Further, provided is an Al-plated steel sheet comprising a steel base material, an Al-plating layer formed on at least one surface of the steel base material, and a coating formed on the Al-plating layer and containing ZnO particles and CeO 2 particles having an average particle size smaller than an average particle size of the ZnO particles.
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公开(公告)号：EP4067528A1
公开(公告)日：2022-10-05
申请号：EP19953893.5
申请日：2019-11-29
发明人： SUZUKI, Yuki , FUJITA, Soshi , MAKI, Jun , KUSUMI, Kazuhisa , FUDA, Masahiro
IPC分类号： C23C2/12 , C22C21/00 , C22C21/02 , C22C21/10 , C22C38/00 , C22C38/60 , H01M8/00 , H01M8/02 , H01M8/06 , H01M8/08 , H01M8/10 , H01M8/22 , H01M8/24 , C22C21/06 , C23C2/26
摘要： A plated steel sheet for hot stamping according to one aspect of the present invention includes a steel sheet, a plating layer formed on either surface or both surfaces of the steel sheet and having an Al content of 60 mass% or more, and a surface film layer formed on the plating layer. A thickness t of the plating layer is 10 to 60 µm. An average crystal grain diameter of the plating layer in a thickness range from an interface between the plating layer and the surface film layer to a position at 2/3 of the thickness t is 2t/3 or less and 15.0 µm or less. A surface film layer contains particles containing one or more elements selected from A group elements consisting of Sc, V, Mn, Fe, Co, Ce, Nb, Mo, and W. A total content of the A group elements is 0.01 to 10.0 g/m 2 . An average grain diameter of the particles containing the A group elements is 0.05 to 3.0 µm.
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