公开(公告)号：EP2392683A4

公开(公告)日：2012-10-17

申请号：EP10735977

申请日：2010-02-02

申请人： JFE STEEL CORP

发明人： ONO YOSHIHIKO ,  TAKAHASHI KENJI ,  OKUDA KANEHARU ,  TAIRA SHOICHIRO

IPC分类号： C22C38/00 ,  C21D6/00 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28

CPC分类号： C23C2/40 ,  C21D6/00 ,  C21D9/46 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  Y10T428/12799 ,  Y10T428/12972

公开(公告)号：EP2014783A4

公开(公告)日：2010-12-01

申请号：EP07742867

申请日：2007-04-26

申请人： JFE STEEL CORP

发明人： MASUOKA HIROYUKI ,  TAIRA SHOICHIRO ,  SUGIMOTO YOSHIHARU ,  YOSHIMI NAOTO ,  NAGOSHI MASAYASU ,  TANIMOTO WATARU

IPC分类号： C23C2/26 ,  C23C2/06 ,  C23C2/28 ,  C23C22/53

CPC分类号： C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40 ,  C23C22/08 ,  C23C22/53 ,  Y10T428/12792 ,  Y10T428/12799 ,  Y10T428/26 ,  Y10T428/265

公开(公告)号：EP1867949A4

公开(公告)日：2008-04-16

申请号：EP05788139

申请日：2005-09-26

申请人： JFE STEEL CORP

发明人： NORO HISATO ,  NAGOSHI MASAYASU ,  TAIRA SHOICHIRO ,  SUGIMOTO YOSHIHARU ,  SATO SHIGEOMI

IPC分类号： G01B15/02 ,  G01N23/225

CPC分类号： G01N23/225 ,  G01B15/02

摘要： A major object is to provide a technique of measuring the thickness of a 10 to 100 nm-thick oxide film formed on the surface of a zinc-based plated steel sheet in a quick and highly precise manner. Another major object is to evaluate the press formability of a plated steel sheet having an oxide film on the basis of the measured oxide film thickness. A method of measuring the film thickness of an oxide film formed on the surface of a zinc-based plated steel sheet is characterized by applying an electron beam accelerated to 3 to 6 kV using a scanning electron microscope having an electron probe micro-analyzer or wavelength dispersive X-ray detector and measuring the intensity of the oxygen Ka-line generated by the application through the detector and a pulse height analyzer at the succeeding stage to exclude the influence of the secondary line of the zinc L-line.

公开(公告)号：EP2447390A4

公开(公告)日：2016-03-30

申请号：EP10792236

申请日：2010-06-25

申请人： JFE STEEL CORP

发明人： ONO YOSHIHIKO ,  TAKAHASHI KENJI ,  OKUDA KANEHARU ,  TAIRA SHOICHIRO ,  SAKURAI MICHITAKA ,  FUSHIWAKI YUSUKE

IPC分类号： C23C2/06 ,  C21D9/46 ,  C22C38/00 ,  C22C38/38 ,  C22C38/58 ,  C23C2/02 ,  C23C2/28

CPC分类号： C23C2/02 ,  C21D9/46 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/32 ,  C22C38/38 ,  C23C2/06 ,  C23C2/28

摘要： A high-strength galvanized steel sheet having a low YP, good stretch flangeability, and excellent corrosion resistance and a method for manufacturing the same are provided. The steel sheet contains, on a percent by mass basis, more than 0.015% to less than 0.10% of C, 0.5% or less of Si, 1.0% to 1.9% of Mn, 0.015% to 0.050% of P, 0.03% or less of S, 0.01% to 0.5% of sol. Al, 0.005% or less of N, less than 0.40% of Cr, 0.005% or less of B, less than 0.15% of Mo, 0.4% or less of V, and less than 0.020% of Ti, in which 2.2‰¤[Mneq]‰¤3.1 and [%Mn]+3.3[%Mo]‰¤1.9, and [%Mn]+3.3[%Mo])/(1.3[%Cr]+8[%P]+150B*)

公开(公告)号：EP2963157A4

公开(公告)日：2016-03-16

申请号：EP14757038

申请日：2014-02-26

申请人： JFE STEEL CORP

发明人： TAIRA SHOICHIRO ,  TANIMOTO WATARU

IPC分类号： C25D5/26 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C23G1/08 ,  C25D5/48

CPC分类号： C25D5/36 ,  B32B15/013 ,  C21D1/26 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0236 ,  C21D9/46 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C22/07 ,  C23F17/00 ,  C23G1/08 ,  C25D3/22 ,  C25D5/48 ,  C25D7/0614 ,  C25F1/06

摘要： The invention provides a process for manufacturing cold rolled steel sheets containing silicon as a strengthening element so as to obtain excellent conversion treatment properties and post-painting corrosion resistance. For the production of high-strength cold rolled steel sheets containing 0.5 to 2.0 mass% silicon, a process for manufacturing high-strength cold rolled steel sheets is adopted which includes a pickling step of thermally annealing a steel sheet in a non-oxidizing atmosphere and thereafter pickling the steel sheet to dissolve away 0.5 g/m 2 to less than 2.0 g/m 2 of the steel sheet, and an electroplating step of electroplating the surface of the steel sheet after pickling with zinc under such conditions that a coating mass of 100 to 5000 mg/m 2 is obtained.

摘要翻译： 本发明提供一种制造含有硅作为强化元素的冷轧钢板的方法，以获得优异的转化处理性能和后涂耐腐蚀性。 为了生产含有0.5〜2.0质量％的硅的高强度冷轧钢板，采用高强度冷轧钢板的制造方法，该方法包括在非氧化性气氛中对钢板进行热退火的酸洗工序， 然后酸洗钢板以使0.5g / m 2至小于2.0g / m 2的钢板溶解，以及电镀步骤，在锌酸洗后，在镀锌层的条件下，使钢板的表面电镀， 得到100〜5000mg / m 2。

公开(公告)号：EP2947180A4

公开(公告)日：2016-01-20

申请号：EP14740381

申请日：2014-01-14

申请人： JFE STEEL CORP

发明人： HOSHINO KATSUYA ,  TAIRA SHOICHIRO ,  TANIMOTO WATARU ,  NAGOSHI MASAYASU

IPC分类号： C23C22/07 ,  C23C22/78 ,  C23C22/83 ,  C23C28/00

CPC分类号： C23C22/07 ,  C23C2/06 ,  C23C2/26 ,  C23C22/53 ,  C23C22/60 ,  C23C22/78 ,  C23C22/83 ,  C23C28/321 ,  C23C28/345

摘要： There is provided a method for manufacturing a galvanized steel sheet that has low sliding resistance in press forming and good degreasing property even under severe alkaline degreasing treatment conditions due to low temperature and short process line length. An oxide layer formed on the surface of a galvanized steel sheet is subjected to neutralization treatment using an alkaline aqueous solution containing 0.01 g/L or more of P ions and 0.01 g/L or more of colloid dispersed particles, wherein the alkaline aqueous solution preferably contains at least one phosphorus compound selected from phosphates, pyrophosphates, and triphosphates and at least one type of colloid dispersed particles selected from Ti, silica, Pt, Pd, Zr, Ag, Cu, Au, and Mg.

公开(公告)号：EP1666624A4

公开(公告)日：2009-07-22

申请号：EP04772660

申请日：2004-08-26

申请人： JFE STEEL CORP

发明人： TAIRA SHOICHIRO ,  SUGIMOTO YOSHIHARU ,  MIYAKAWA YOICHI ,  GAMOU AKIRA ,  NAGOSHI MASAYASU ,  KAWANO TAKASHI

IPC分类号： C23C2/06 ,  C23C2/26 ,  C23C22/06 ,  C23C22/53

CPC分类号： C23C22/08 ,  C23C2/06 ,  C23C2/26 ,  C23C22/53 ,  C23C22/78 ,  C23C22/83

摘要： A hot dip zinc plated steel sheet, which has a hot dip zinc plating layer having a flat portion formed on the surface thereof, wherein a coating film comprising compounds containing Zn, Fe and O is formed in the flat portion, the coating film has a average thickness (A) of 10 to 100 nm as determined from the elemental analysis thereof, and a value of [Fe]/([Zn]+ [Fe]) in the coating film is 0.002 to 0.25 wherein each of [Zn] and [Fe] represents a content (atom.%) of Zn or Fe in the coating film. The above hot dip zinc plated steel sheet is excellent in press working characteristics, adhesiveness and chemical treatment characteristics, and thus is suitable for use in an automobile and a household electrical appliance.

摘要翻译： 一种热浸镀锌钢板，其特征在于，在表面形成有平坦部的热浸镀锌层，在平坦部形成有包含含有Zn，Fe和O的化合物的涂膜，该涂膜具有 由其元素分析确定的平均厚度（A）为10至100nm，并且涂膜中[Fe] /（[Zn] + [Fe]）的值为0.002至0.25，其中[Zn]和 [Fe]表示涂膜中的Zn或Fe的含量（原子％）。 上述热浸镀锌钢板的冲压加工特性，粘接性和化学处理特性优良，因此适用于汽车和家用电器。

公开(公告)号：EP3219826A4

公开(公告)日：2017-11-22

申请号：EP15858294

申请日：2015-11-09

申请人： JFE STEEL CORP

发明人： HOSHINO KATSUYA ,  TAIRA SHOICHIRO ,  FURUYA SHINICHI

IPC分类号： C23C22/78 ,  C23C28/00 ,  C23G1/20

CPC分类号： C23C22/83 ,  C23C22/53 ,  C23C22/60 ,  C23C22/78 ,  C23G1/20

摘要： Provided is a method for manufacturing a steel sheet coated with a zinc-based coating layer with which it is possible to remove an oxide on the surface of a zinc-based coating layer through contact with an alkaline aqueous solution and with which it is possible to prevent a problem related to surface appearance due to precipitates generated in an alkaline aqueous solution. The method for manufacturing a steel sheet coated with a zinc-based coating layer of the first invention to solve the problems described above is a method for manufacturing a steel sheet coated with a zinc-based coating layer having a reaction layer on the surface of the steel sheet, the method including: the method including bringing the steel sheet coated with a zinc-based coating layer into contact for 1.0 second or more with an alkaline aqueous solution containing one or more chelating agents selected from among sodium gluconate, sodium glucoheptonate, sodium citrate, tartaric acid, arabonic acid, galactonic acid, sorbit, mannite, glycerin, EDTA, and sodium tripolyphosphate in a total amount of 0.050 mass% or more and having a pH of 10.0 or more as a pre-treatment before a formation of the reaction layer, and forming the reaction layer being an oxide layer containing a crystal-structured substance expressed by Zn 4 (SO 4 ) 1-x (CO 3 ) x (OH) 6 ·nH 2 O.

公开(公告)号：EP3115482A4

公开(公告)日：2017-05-10

申请号：EP15759246

申请日：2015-02-19

申请人： JFE STEEL CORP

发明人： MASUOKA HIROYUKI ,  TAIRA SHOICHIRO ,  TERASAKI YUTA ,  KONDO HIROTSUGU

IPC分类号： C23G1/08 ,  C21D9/46 ,  C22C38/00 ,  C22C38/06

CPC分类号： C22C38/06 ,  C21D8/0478 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C23G1/00 ,  C23G1/08 ,  C23G1/081 ,  C23G1/085 ,  C23G1/086

公开(公告)号：EP2460903A4

公开(公告)日：2013-08-07

申请号：EP10804582

申请日：2010-07-27

申请人： JFE STEEL CORP

发明人： ONO YOSHIHIKO ,  TAKAHASHI KENJI ,  OKUDA KANEHARU ,  TAIRA SHOICHIRO ,  SAKURAI MICHITAKA ,  FUSHIWAKI YUSUKE

IPC分类号： C22C38/06 ,  C21D9/46 ,  C22C38/58

CPC分类号： C21D8/0236 ,  C21D8/02 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/58