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公开(公告)号：US20240133041A1
公开(公告)日：2024-04-25
申请号：US18547879
申请日：2021-03-08
发明人： Takashi FUJII , Kohei UEDA
CPC分类号： C23C28/321 , C22C18/04 , C22C21/10 , C23C2/06 , C23C2/12 , C23C2/26 , C23C22/73 , C23C22/82 , C23C28/34 , C23C28/345
摘要： A coated and plated steel sheet or coated and plated steel strip including: a steel sheet or a steel strip; a plating layer provided on one surface or both surfaces of the steel sheet or steel strip and containing zinc; a chemical conversion coating provided on the plating layer provided on one surface of the steel sheet or steel strip or provided on at least one of the plating layers provided on both surfaces of the steel sheet or steel strip; and a single-layer or multilayer coating film provided on the chemical conversion coating, in which the single-layer coating film in contact with the chemical conversion coating or the coating film, of the multilayer coating film, which is in contact with the chemical conversion coating, contains a cerium compound capable of being dissolved in an amount of 0.10 g or more with respect to 100 g of water at room temperature at a concentration of from 0.01 to 10.0% by mass, with respect to a solid content of the single-layer coating film in contact with the chemical conversion coating or the coating film, of the multilayer coating film, which is in contact with the chemical conversion coating.
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公开(公告)号：US20240229245A9
公开(公告)日：2024-07-11
申请号：US18547879
申请日：2021-03-08
发明人： Takashi FUJII , Kohei UEDA
CPC分类号： C23C28/321 , C22C18/04 , C22C21/10 , C23C2/06 , C23C2/12 , C23C2/26 , C23C22/73 , C23C22/82 , C23C28/34 , C23C28/345
摘要： A coated and plated steel sheet or coated and plated steel strip including: a steel sheet or a steel strip; a plating layer provided on one surface or both surfaces of the steel sheet or steel strip and containing zinc; a chemical conversion coating provided on the plating layer provided on one surface of the steel sheet or steel strip or provided on at least one of the plating layers provided on both surfaces of the steel sheet or steel strip; and a single-layer or multilayer coating film provided on the chemical conversion coating, in which the single-layer coating film in contact with the chemical conversion coating or the coating film, of the multilayer coating film, which is in contact with the chemical conversion coating, contains a cerium compound capable of being dissolved in an amount of 0.10 g or more with respect to 100 g of water at room temperature at a concentration of from 0.01 to 10.0% by mass, with respect to a solid content of the single-layer coating film in contact with the chemical conversion coating or the coating film, of the multilayer coating film, which is in contact with the chemical conversion coating.
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公开(公告)号：US20240150585A1
公开(公告)日：2024-05-09
申请号：US18281933
申请日：2022-03-23
发明人： Hiroyasu FURUKAWA , Takashi FUJII , Fumio SHIBAO , Kohei UEDA , Akira NAKAGAWA , Yuki YAMAMURA , Naoto SASAKI
IPC分类号： C09D5/08 , B05D7/16 , C09D5/00 , C09D175/06
CPC分类号： C09D5/08 , B05D7/16 , C09D5/002 , C09D175/06 , C23C2/06
摘要： To further improve, even under OT bending with the use of a Zn—Al—Mg-based alloy plated steel sheet as a base sheet, corrosion resistance regarding corrosion under paint film at a OT bent portion and a periphery thereof, without causing occurrence of cracks and peeling in the paint film.
A pre-coated plated steel sheet according to the present invention includes: a plating layer composed of Zn—Al—Mg-based alloy plating, the plating layer being positioned on one side or both sides of a steel sheet; a chemical treatment film layer positioned on the plating layer; and a paint film layer positioned on the chemical treatment film, in which the paint film layer includes a primer paint film layer, and an upper paint film layer positioned on the primer paint film layer, and at least any of the following is satisfied: both a condition (a-1) and a condition (a-2); a condition (b); and a condition (c).-
公开(公告)号：US20240158901A1
公开(公告)日：2024-05-16
申请号：US18280909
申请日：2022-03-23
发明人： Takashi FUJII , Hiroyasu FURUKAWA , Yuki YAMAMURA , Fumio SHIBAO , Kohei UEDA , Akira NAKAGAWA , Naoto SASAKI
IPC分类号： C23C2/06 , C09D5/00 , C09D167/00 , C23C2/40
CPC分类号： C23C2/06 , C09D5/002 , C09D167/00 , C23C2/40
摘要： To more securely inhibit the occurrence of paint film floating even when drawing is performed by using a Zn—Al—Mg-based alloy plated steel sheet as a base sheet.
A pre-coated plated steel sheet according to the present invention includes: a plating layer composed of Zn—Al—Mg-based alloy plating, the plating layer being positioned on one side or both sides of a steel sheet; a chemical treatment film layer positioned on the plating layer; and a paint film layer positioned on the chemical treatment film, in which the paint film layer includes a primer paint film layer, and an upper paint film layer positioned on the primer paint film layer, and at least any of the following is satisfied: both a condition (a-1) and a condition (a-2); a condition (b); and a condition (c).
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