公开(公告)号：EP2811045A4

公开(公告)日：2015-04-29

申请号：EP13743777

申请日：2013-01-28

申请人： JFE STEEL CORP

发明人： TACHIBANA SHUNICHI ,  YAZAWA YOSHIHIRO ,  KISHI KEIICHIRO ,  KURONUMA YOTA ,  HOSHINO TOSHIYUKI ,  NISHIMURA KIMIHIRO ,  SUEYOSHI HITOSHI

IPC分类号： C22C38/00 ,  B23K20/04 ,  C21D9/00 ,  C22C38/14 ,  C22C38/58

CPC分类号： C22C38/00 ,  B23K20/02 ,  B32B15/01 ,  B32B15/015 ,  C21D1/18 ,  C21D1/25 ,  C21D8/0205 ,  C21D9/08 ,  C21D2251/02 ,  C21D2251/04 ,  C22C19/03 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  Y10T428/12972

摘要： The present invention provides a base metal for a high-toughness clad plate having excellent toughness at a welded joint by composite addition of alloy elements. A base metal for high-toughness clad plate having excellent toughness at a welded joint contains, in terms of mass%, C: 0.030 to 0.10%, Si: 0.10 to 0.30%, Mn: 1.00 to 1.60%, P: 0.015% or less, S: 0.003% or less, V: less than 0.010%, and at least one selected from Mo: 0.05 to 0.50%, Nb: 0.010 to 0.060%, Ti: 0.005 to 0.020%, Al: 0.040% or less, Ca: 0.0010 to 0.0040%, and N: 0.0030 to 0.0060%, the balance being Fe and unavoidable impurities, in which a percent ductile fracture is 85% or more in a -20°C DWTT test and vE-20°C is 100 J or more at a HAZ 3 mm position.

公开(公告)号：EP2824211A4

公开(公告)日：2016-03-09

申请号：EP13758685

申请日：2013-03-07

申请人： JFE STEEL CORP

发明人： YAZAWA YOSHIHIRO ,  KISHI KEIICHIRO ,  TACHIBANA SHUNICHI ,  HOSHINO TOSHIYUKI

IPC分类号： C22C38/00 ,  B32B15/01 ,  C21D8/02 ,  C22C38/22 ,  C22C38/44

CPC分类号： C22C38/54 ,  B32B15/01 ,  B32B15/011 ,  C21D6/002 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0263 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/16 ,  C22C38/42 ,  C22C38/44 ,  Y10T428/12993

摘要： Provided is a seawater-resistant stainless clad steel with excellent abrasion resistance and seawater pitting resistance. A seawater-resistant stainless clad steel includes a cladding material made of stainless steel having a pitting index, which is represented by Cr[mass%] + 3.3Mo[mass%] + 16N[mass%], of 35.0 or more and a microstructure in a surface portion including, by area ratio, less than 2.0% of a à phase, in which dynamic friction coefficients in the rolling direction and in a direction at a right angle to the rolling direction determined in accordance with JIS K 7125 (1999) are both 0.05 or less.

公开(公告)号：EP2977478A4

公开(公告)日：2016-05-25

申请号：EP13884148

申请日：2013-11-29

申请人： JFE STEEL CORP

发明人： KURONUMA YOTA ,  YAZAWA YOSHIHIRO ,  KISHI KEIICHIRO ,  TACHIBANA SHUNICHI ,  MITAO SHINJI ,  YOKOTA TOMOYUKI

IPC分类号： C22C19/05 ,  B21B1/22 ,  B21B1/38 ,  B23K20/04 ,  B32B15/01 ,  C21D8/02 ,  C22C38/00 ,  C22C38/58 ,  C22F1/00 ,  C22F1/10

CPC分类号： B21B1/22 ,  B21B1/38 ,  B23K20/04 ,  B32B15/015 ,  C21D8/02 ,  C21D8/1261 ,  C21D2251/02 ,  C22C19/055 ,  C22C19/057 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  C22F1/00 ,  C22F1/10

摘要： Provided are a nickel-base alloy-clad steel plate having good resistance to intergranular corrosion and a production method thereof. A nickel-base alloy-clad steel plate having good resistance to intergranular corrosion is characterized in that the amount of Cr that exists as carbides in a cladding metal composed of a nickel-base alloy is 0.030% or less on a mass percent basis.

公开(公告)号：EP2930254A4

公开(公告)日：2015-12-30

申请号：EP13860037

申请日：2013-12-04

申请人： JFE STEEL CORP

发明人： KISHI KEIICHIRO ,  YAZAWA YOSHIHIRO ,  TACHIBANA SHUNICHI ,  KURONUMA YOTA ,  SUEYOSHI HITOSHI

IPC分类号： C22C38/00 ,  B23K35/00 ,  B23K35/30 ,  B32B15/01 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C22C38/58

CPC分类号： C22C38/54 ,  B23K35/004 ,  B23K35/3053 ,  B23K35/308 ,  B23K35/3086 ,  B32B15/011 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

公开(公告)号：EP2824206A4

公开(公告)日：2015-07-29

申请号：EP13757290

申请日：2013-03-05

申请人： JFE STEEL CORP

发明人： YAZAWA YOSHIHIRO ,  TACHIBANA SHUNICHI ,  KISHI KEIICHIRO ,  KURONUMA YOTA ,  HOSHINO TOSHIYUKI

IPC分类号： C22C38/00 ,  B32B15/01 ,  C22C38/44

CPC分类号： C22C38/44 ,  B32B15/011 ,  C21D6/002 ,  C21D2211/004 ,  C21D2251/02 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42

摘要： The object of the present invention is to provide a stainless clad steel which is excellent in corrosion resistance, in particular, rusting resistance and an improvement in appearance due to prevention of discoloration and which can prevent an occurrence of outflow rust. A stainless clad steel characterized by including a stainless steel having Pitting Index represented by Formula (1) described below of 35 or more as a cladding material, wherein the ratio of Cr concentration (atomic percent)/Fe concentration (atomic percent) in a passivation film portion of the above-described cladding material to Cr concentration (atomic percent)/Fe concentration (atomic percent) in a parent phase portion of the above-described cladding material is 1.20 or more and, in addition, the amount of precipitation of a à (sigma) phase of the surface of the above-described cladding material is 2.0% or less on an area ratio basis, Pitting Index = Cr + 3.3 �¢ Mo + 16 �¢ N where Cr, Mo, and N indicate the contents (percent by mass) of their respective elements, and the case of no inclusion is specified to be 0.

公开(公告)号：EP2843076A4

公开(公告)日：2015-03-04

申请号：EP13782090

申请日：2013-04-19

申请人： JFE STEEL CORP

发明人： KISHI KEIICHIRO ,  YAZAWA YOSHIHIRO ,  TACHIBANA SHUNICHI ,  KURONUMA YOTA ,  HOSHINO TOSHIYUKI

IPC分类号： C22C38/58 ,  B23K9/00 ,  B23K9/02 ,  B23K9/16 ,  B23K9/23 ,  B23K20/04 ,  B23K35/30 ,  B32B15/01 ,  C21D8/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/44 ,  C22C38/54

CPC分类号： B32B15/011 ,  B23K9/0026 ,  B23K9/02 ,  B23K9/16 ,  B23K9/23 ,  B23K20/04 ,  B23K20/16 ,  B23K20/227 ,  B23K35/3086 ,  B23K2201/185 ,  B23K2201/34 ,  B23K2203/04 ,  B23K2203/05 ,  B23K2203/18 ,  B32B2250/02 ,  C21D6/004 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2251/02 ,  C22C30/00 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/54 ,  Y10T428/12438