公开(公告)号：EP2088219A4

公开(公告)日：2011-04-20

申请号：EP07831870

申请日：2007-11-08

申请人： JFE GALVANIZING & COATING CO LTD ,  JFE STEEL CORP

发明人： KOUMURA HIDEO ,  FURUTA AKIHIKO ,  FURUYA YOSHITO ,  OGISHI HIDEO ,  SATOH SUSUMU ,  UMEBAYASHI RIE ,  ANDO SATORU ,  TAKANO SHIGERU

IPC分类号： C23C2/06

CPC分类号： C23C2/06 ,  Y10T428/12799

摘要： A hot-dip Zn-Al alloy coated steel sheet exhibiting a beautiful coating appearance with metallic luster, in which no spangle or very fine spangles are formed, and having excellent blackening resistance and a method for manufacturing the hot-dip Zn-Al alloy coated steel sheet are provided. The hot-dip Zn-Al alloy coated steel sheet includes a hot-dip Zn-Al alloy coating layer containing 1.0 to 10 percent by mass of Al, 0.2 to 1.0 percent by mass of Mg, 0.005 to 0.1 percent by mass of Ni, and the balance being Zn and incidental impurities on at least one surface of a steel sheet. The manufacturing method includes the steps of dipping the steel sheet into a hot-dip Zn-Al alloy coating bath and pulling up and cooling the steel sheet, wherein the steel sheet pulled up from the coating bath is cooled to 250°C at a cooling rate of 1°C to 15°C/sec.

公开(公告)号：EP3266900A4

公开(公告)日：2018-01-17

申请号：EP16759061

申请日：2016-03-02

申请人： JFE GALVANIZING&COATING CO LTD ,  JFE STEEL CORP

发明人： OOI TOSHIHIKO ,  SATO YOHEI ,  TOBIYAMA YOICHI ,  OKUMA TOSHIYUKI ,  FURUTA AKIHIKO ,  YOSHIDA MASAHIRO ,  SUZUKI YOSHITSUGU ,  ANDO SATORU ,  MATSUZAKI AKIRA

IPC分类号： C23C2/12 ,  C23C2/28

CPC分类号： C22C18/04 ,  C22C21/10 ,  C22C30/06 ,  C23C2/12 ,  C23C2/28

摘要： Provided is a hot-dip Al-Zn-Mg-Si coated steel sheet having good corrosion resistance in flat parts and edge parts, and also having excellent worked part corrosion resistance. The hot-dip Al-Zn-Mg-Si coated steel sheet includes a base steel sheet and a hot-dip coating on a surface of the base steel sheet. The hot-dip coating includes an interfacial alloy layer present at an interface with the base steel sheet and a main layer present on the interfacial alloy layer, and contains from 25 mass% to 80 mass% of Al, from greater than 0.6 mass% to 15 mass% of Si, and from greater than 0.1 mass% to 25 mass% of Mg. The Mg content and Si content in the hot-dip coating satisfy formula (1): M Mg / M Si ˆ’ 0.6 > 1.7 where M Mg represents the Mg content (mass%) and M Si represents the Si content (mass%).

公开(公告)号：EP2957648A4

公开(公告)日：2016-02-10

申请号：EP14746418

申请日：2014-01-24

申请人： JFE STEEL CORP

发明人： OOI TOSHIHIKO ,  OKUMA TOSHIYUKI ,  FURUTA AKIHIKO ,  YOSHIDA MASAHIRO ,  MATSUZAKI AKIRA ,  ANDO SATORU

IPC分类号： C23C2/06 ,  C22C18/04 ,  C22C21/10 ,  C23C2/02 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40

CPC分类号： C23C2/06 ,  B32B15/012 ,  C22C18/04 ,  C22C21/00 ,  C22C21/02 ,  C22C21/08 ,  C22C21/10 ,  C23C2/02 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40 ,  Y10T428/12799

摘要： Disclosed is a hot-dip Al-Zn alloy coated steel sheet having good corrosion resistance in flat parts as well as good workability and thereby has excellent corrosion resistance in worked parts. In the disclosure, the upper layer of the hot-dip coating has a composition containing Al in an amount of 20 mass% to 95 mass%, Si in an amount of 10 % or less of the Al content, at least one of Ca and Mg, the total content of Ca and Mg being 0.01 mass% to 10 mass%, and the balance including Zn and incidental impurities, and the mean Vickers hardness of the hot-dip coating is 50 Hv to 100 Hv.

公开(公告)号：EP2808417A4

公开(公告)日：2015-03-25

申请号：EP13757691

申请日：2013-03-04

申请人： JFE STEEL CORP

发明人： MIYOSHI TATSUYA ,  NAKAJIMA SEIJI ,  ANDO SATORU

IPC分类号： C23C2/06 ,  B21D22/20 ,  C21D1/18 ,  C21D9/00 ,  C21D9/46 ,  C22C18/00 ,  C22C18/04 ,  C22C21/10 ,  C22C38/00 ,  C22C38/60 ,  C23C2/02 ,  C23C2/28 ,  C23C2/40

CPC分类号： C21D8/0278 ,  B21D22/022 ,  B32B15/013 ,  C21D1/673 ,  C21D7/13 ,  C21D8/0226 ,  C21D8/0247 ,  C21D9/46 ,  C21D2211/005 ,  C22C18/00 ,  C22C21/10 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  Y10T428/12799

摘要： The invention provides a steel sheet for hot press-forming that can reliably give hot press-formed parts having excellent paint adhesiveness, perforation corrosion resistance and joint corrosion resistance, and also provides a method for manufacturing the steel sheet for hot press-forming, and a method for producing hot press-formed parts using the steel sheet for hot press-forming. The steel sheet for hot press-forming includes a base steel sheet and a Zn-based coating layer with a mass of coating of 10 to 90 g/m 2 on the base steel sheet, wherein the average ferrite grain diameter in the surface microstructure of the base steel sheet is not more than 20 µm.

公开(公告)号：EP3017892A4

公开(公告)日：2016-07-20

申请号：EP14819849

申请日：2014-06-02

申请人： JFE STEEL CORP

发明人： NAKAJIMA SEIJI ,  MORIMOTO MINAKO ,  ANDO SATORU

IPC分类号： B21D22/20 ,  C21D1/18 ,  C21D9/00 ,  C22C18/00 ,  C22C19/03 ,  C22C38/00 ,  C22C38/60 ,  C25D5/26

CPC分类号： B21D22/208 ,  B32B15/013 ,  C21D1/18 ,  C21D1/673 ,  C21D9/46 ,  C21D2251/02 ,  C22C18/00 ,  C22C19/03 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  C25D5/14 ,  C25D5/50 ,  C25D7/0614

公开(公告)号：EP2975160A4

公开(公告)日：2016-04-27

申请号：EP14814538

申请日：2014-05-13

申请人： JFE STEEL CORP

发明人： NAKAJIMA SEIJI ,  MORIMOTO MINAKO ,  ANDO SATORU

IPC分类号： B21D22/20 ,  C21D8/02 ,  C23C28/00 ,  C25D5/50

CPC分类号： B21D22/022 ,  C21D8/0278 ,  C22C18/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  C25D3/565 ,  C25D5/50

摘要： Provided is a hot-pressed member excellent in terms of paint adhesiveness and a method for manufacturing the hot-pressed member. A hot-pressed member having a coating layer containing Zn and Ni on the surface of a steel sheet of which the member is formed, having an oxide film containing Zn on the coating layer, and having a void formation rate is 80% or less, of which void is formed between the coating layer and the oxide film.

公开(公告)号：EP2980261A4

公开(公告)日：2016-04-13

申请号：EP14775425

申请日：2014-02-17

申请人： JFE STEEL CORP

发明人： YOSHIDA MASAHIRO ,  MATSUZAKI AKIRA ,  ANDO SATORU

IPC分类号： C23C2/12 ,  C22C18/04 ,  C22C21/00 ,  C22C21/10 ,  C23C2/28 ,  C23C2/40

CPC分类号： C23C2/12 ,  B32B15/012 ,  B32B15/013 ,  C22C18/04 ,  C22C21/00 ,  C22C21/10 ,  C23C2/00 ,  C23C2/04 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/285 ,  C23C2/40 ,  C23C2/405 ,  C23C30/00 ,  C23C30/005 ,  Y10T428/12757 ,  Y10T428/12799 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/12993

摘要： Disclosed is a hot-dip Al-Zn alloy coated steel sheet having excellent anti-corrosion property after coating, and a method for producing the same. In the disclosure, the hot-dip Al-Zn alloy coated steel sheet has a hot-dip coating layer containing by mass%, Al: 25 % to 90 %, and at least one of Sn: 0.01 % to 2.0 %, In: 0.01 % to 10 %, and Bi: 0.01 % to 2.0 %.

公开(公告)号：EP2612957A4

公开(公告)日：2015-04-08

申请号：EP11821649

申请日：2011-08-25

申请人： JFE STEEL CORP

发明人： MASUOKA HIROYUKI ,  ANDO SATORU ,  YAMAMOTO SHUNSUKE

IPC分类号： C23G1/08 ,  B21B3/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/58

CPC分类号： C23G1/08 ,  B21B3/02 ,  B21B45/0269 ,  C21D8/0236 ,  C21D8/0278 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C23G1/00 ,  C23G1/081 ,  C23G1/085 ,  C23G1/086 ,  C23G1/088 ,  Y10T428/26

摘要： This invention provides a method of producing a cold-rolled steel sheet being excellent in not only the phosphate treatability but also the corrosion resistance after coating under severe corrosion environment such as hot salt water immersion test or composite cycle corrosion test, wherein a continuously annealed steel sheet after cold rolling preferably comprising 0.5-3.0 mass% of Si is pickled to remove a Si-containing oxide layer on a surface layer of the steel sheet and further repickled so that a surface covering ratio of an iron-based oxide on the surface of the steel sheet is not more than 40% and preferably a maximum thickness of the iron-based oxide is not more than 150 nm, as well as a cold-rolled steel sheet produced by this method and a member for automobile using the cold-rolled steel sheet.

摘要翻译： 本发明提供了一种不仅在磷酸盐处理性方面优异的冷轧钢板的制造方法，而且在严酷的腐蚀环境例如热盐水浸渍试验或复合循环腐蚀试验中涂覆后的耐腐蚀性，其中连续退火钢 酸洗后，优选含有0.5〜3.0质量％的Si的片材除去钢板的表面层上的含Si氧化物层，并进一步反复使得表面上的铁基氧化物的表面覆盖率 钢板不超过40％，优选铁基氧化物的最大厚度不大于150nm，以及通过该方法制造的冷轧钢板和使用冷轧的汽车用部件 钢板。

公开(公告)号：EP1327697A4

公开(公告)日：2009-11-11

申请号：EP01978826

申请日：2001-10-18

申请人： JFE STEEL CORP

发明人： SODANI YASUHIRO ,  KIMURA YUKIO ,  UENO MASAYASU ,  TOMITA SHOGO ,  NORO HISATO ,  SATO KAORU ,  SUGIMOTO YOSHIHARU ,  ANDO SATORU ,  TADA MASAKI ,  INAGAKI JUNICHI ,  YAMASHITA MASAAKI ,  YAMASAKI YUJI

IPC分类号： B24C1/06 ,  B24C1/10 ,  B24C3/12 ,  C23C2/26 ,  B21D22/02 ,  B21D22/20 ,  C23C22/07

CPC分类号： C23C22/78 ,  B24C1/06 ,  B24C1/086 ,  B24C1/10 ,  B24C3/12 ,  C23C2/26 ,  C23C2/265 ,  Y10T428/12611 ,  Y10T428/12799 ,  Y10T428/12993

摘要： The method for manufacturing galvanized steel sheet has a step of adjusting the surface texture thereof by blasting solid particles against the surface thereof. The surface texture is defined by at least one parameter selected from the group of parameters consisting of mean roughness Ra on the surface of steel sheet, peak count PPI on the surface of steel sheet, and filtered centerline waviness Wca on the surface of steel sheet. The galvanized steel sheet has a surface in dimple-pattern texture.

公开(公告)号：EP2980260A4

公开(公告)日：2016-04-13

申请号：EP14774993

申请日：2014-03-19

申请人： JFE STEEL CORP

发明人： MORIMOTO MINAKO ,  YOSHIDA MASAHIRO ,  ANDO SATORU

IPC分类号： C23C2/12 ,  C22C21/10 ,  C23C2/02 ,  C23C2/06 ,  C23C2/26

CPC分类号： C22C21/10 ,  B32B15/012 ,  C23C2/02 ,  C23C2/12 ,  C23C2/26 ,  C23C2/405 ,  C23C28/021

摘要： An Al-Zn-coated steel sheet that suppresses blistering and offers good corrosion resistance after painting is provided. An Al-Zn-coated steel sheet includes an Al-Zn coating layer on a steel sheet surface, the Al-Zn coating layer including two layers which are an interfacial alloy layer present in an interface with a base steel sheet and an upper layer disposed on the interfacial alloy layer. The upper layer contains compounds of Si and Ca or Si, Ca, and Al, and Ca/Si mass% ratio in the upper layer is 0.72 to 1.4. The interfacial alloy layer contains an Fe-Al compound and/or an Fe-Al-Si compound. In the upper layer, Si content is 0.1 to 2.0 mass% and Ca content is 0.001 to 2.0 mass%.