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    STEEL FOR WELDED STRUCTURE AND PRODUCING METHOD THEREOF
    1.
    发明申请
    STEEL FOR WELDED STRUCTURE AND PRODUCING METHOD THEREOF 有权
    焊接结构钢及其制造方法

    公开(公告)号：US20110268601A1

    公开(公告)日：2011-11-03

    申请号：US13138119

    申请日：2010-05-18

    申请人： Yoshiyuki Watanabe ,  Kazuhiro Fukunaga ,  Akihiko Kojima ,  Ryuji Uemori ,  Rikio Chijiwa

    发明人： Yoshiyuki Watanabe ,  Kazuhiro Fukunaga ,  Akihiko Kojima ,  Ryuji Uemori ,  Rikio Chijiwa

    IPC分类号： C22C38/16 ,  C22C38/08 ,  B22D11/00

    CPC分类号： C22C38/16 ,  C21D8/02 ,  C21D9/50 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14

    摘要： A steel for a welded structure includes the following composition: by mass %, C at a C content [C] of 0.015 to 0.045%; Si at a Si content [Si] of 0.05 to 0.20%; Mn at a Mn content [Mn] of 1.5 to 2.0%; Ni at a Ni content [Ni] of 0.10 to 1.50%; Ti at a Ti content [Ti] of 0.005 to 0.015%; O at an O content [O] of 0.0015 to 0.0035%; and N at a N content [N] of 0.002 to 0.006%, and a balance composed of Fe and unavoidable impurities. In the steel for a welded structure, the P content [P] is limited to 0.008% or less, the S content [S] is limited to 0.005% or less, the Al content [Al] is limited to 0.004% or less, the Nb content [Nb] is limited to 0.005% or less, the Cu content [Cu] is limited to 0.24% or less, the V content [V] is limited to 0.020% or less, and a steel composition parameter PCTOD is 0.065% or less, and a steel composition hardness parameter CeqH is 0.235% or less.

    摘要翻译： 用于焊接结构的钢包括以质量％计的C含量[C]为C = 0.015〜0.045％的组成： Si含量[Si]为0.05〜0.20％的Si; Mn含量[Mn]为1.5〜2.0％的Mn; Ni量[Ni]为0.10〜1.50％的Ni; Ti含量[Ti]为0.005〜0.015％的Ti; O的含量[O]为0.0015〜0.0035％; N为N，0.002〜0.006％，余量由Fe和不可避免的杂质构成。 在焊接结构钢中，P含量[P]限制在0.008％以下，S含量[S]限制在0.005％以下，Al含量[Al]限定在0.004％以下， 将Nb含量[Nb]限制在0.005％以下，将Cu含量[Cu]限制在0.24％以下，将V含量[V]限制在0.020％以下，钢结构参数PCTOD为0.065 ％以下，钢组合物硬度参数CeqH为0.235％以下。

    Steel for welded structure and producing method thereof
    2.
    发明授权
    Steel for welded structure and producing method thereof 有权
    焊接结构钢及其制造方法

    公开(公告)号：US08668784B2

    公开(公告)日：2014-03-11

    申请号：US13138119

    申请日：2010-05-18

    申请人： Yoshiyuki Watanabe ,  Kazuhiro Fukunaga ,  Akihiko Kojima ,  Ryuji Uemori ,  Rikio Chijiiwa

    发明人： Yoshiyuki Watanabe ,  Kazuhiro Fukunaga ,  Akihiko Kojima ,  Ryuji Uemori ,  Rikio Chijiiwa

    IPC分类号： C22C38/08 ,  C22C38/14 ,  C21D8/00

    CPC分类号： C22C38/16 ,  C21D8/02 ,  C21D9/50 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14

    摘要： A steel for a welded structure includes the following composition: by mass %, C at a C content [C] of 0.015 to 0.045%; Si at a Si content [Si] of 0.05 to 0.20%; Mn at a Mn content [Mn] of 1.5 to 2.0%; Ni at a Ni content [Ni] of 0.10 to 1.50%; Ti at a Ti content [Ti] of 0.005 to 0.015%; O at an O content [O] of 0.0015 to 0.0035%; and N at a N content [N] of 0.002 to 0.006%, and a balance composed of Fe and unavoidable impurities. In the steel for a welded structure, the P content [P] is limited to 0.008% or less, the S content [S] is limited to 0.005% or less, the Al content [Al] is limited to 0.004% or less, the Nb content [Nb] is limited to 0.005% or less, the Cu content [Cu] is limited to 0.24% or less, the V content [V] is limited to 0.020% or less, and a steel composition parameter PCTOD is 0.065% or less, and a steel composition hardness parameter CeqH is 0.235% or less.

    摘要翻译： 用于焊接结构的钢包括以质量％计的C含量[C]为C = 0.015〜0.045％的组成： Si含量[Si]为0.05〜0.20％的Si; Mn含量[Mn]为1.5〜2.0％的Mn; Ni量[Ni]为0.10〜1.50％的Ni; Ti含量[Ti]为0.005〜0.015％的Ti; O的含量[O]为0.0015〜0.0035％; N为N，0.002〜0.006％，余量由Fe和不可避免的杂质构成。 在焊接结构钢中，P含量[P]限制在0.008％以下，S含量[S]限制在0.005％以下，Al含量[Al]限定在0.004％以下， 将Nb含量[Nb]限制在0.005％以下，将Cu含量[Cu]限制在0.24％以下，将V含量[V]限制在0.020％以下，钢结构参数PCTOD为0.065 ％以下，钢组合物硬度参数CeqH为0.235％以下。

    STEEL SUPERIOR IN CTOD PROPERTIES OF WELD HEAT-AFFECTED ZONE AND METHOD OF PRODUCTION OF SAME
    3.
    发明申请
    STEEL SUPERIOR IN CTOD PROPERTIES OF WELD HEAT-AFFECTED ZONE AND METHOD OF PRODUCTION OF SAME 有权
    焊接热影响区CTOD特性中的钢铁及其生产方法

    公开(公告)号：US20100008815A1

    公开(公告)日：2010-01-14

    申请号：US12448582

    申请日：2008-12-04

    申请人： Rikio Chijiiwa ,  Ryuji Uemori ,  Yoshiyuki Watanabe ,  Kazuhiro Fukunaga ,  Akihiko Kojima ,  Yoshihide Nagai

    发明人： Rikio Chijiiwa ,  Ryuji Uemori ,  Yoshiyuki Watanabe ,  Kazuhiro Fukunaga ,  Akihiko Kojima ,  Yoshihide Nagai

    IPC分类号： C22C38/16 ,  B22D11/00

    CPC分类号： C22C38/50 ,  B23K9/18 ,  B23K9/23 ,  B23K2103/04 ,  C21D9/50 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/48 ,  C22C38/58

    摘要： The present invention provides high strength steel having unprecedentedly superior CTOD (fracture toughness) properties satisfying not only the CTOD properties of the FL zone at −60° C., but also the CTOD properties of the ICHAZ zone in small and medium heat input multilayer welding etc. and a method of production of the same.The steel of the present invention is steel superior in CTOD properties of the heat-affected zone containing, by mass %, C: 0.015 to 0.045%, Si: 0.05 to 0.2%, Mn: 1.5 to 2.0%, Cu: 0.25 to 0.5%, Ni: 0.7 to 1.5%, P: 0.008% or less, S: 0.005% or less, Al: 0.004% or less, Ti: 0.005 to 0.015%, Nb: 0.005% or less, 0: 0.0015 to 0.0035%, and N: 0.002 to 0.006%, PCTOD: 0.065 or less, CeqH: 0.235 or less and the balance consisting of Fe and unavoidable impurities.

    摘要翻译： 本发明提供了具有前所未有的优异的CTOD（断裂韧性）性能的高强度钢，其不仅满足-60℃下FL区域的CTOD性能，而且满足中小型热输入多层焊接中ICHAZ区域的CTOD特性 等等及其生产方法。 本发明的钢是热影响区的CTOD特性优异的钢，以质量％计含有C：0.015〜0.045％，Si：0.05〜0.2％，Mn：1.5〜2.0％，Cu：0.25〜0.5 ％，Ni：0.7〜1.5％，P：0.008％以下，S：0.005％以下，Al：0.004％以下，Ti：0.005〜0.015％，Nb：0.005％以下，0：0.0015〜0.0035％ ，N：0.002〜0.006％，PCTOD：0.065以下，CeqH：0.235以下，余量由Fe和不可避免的杂质构成。

    Electron-beam welded joint, steel for electron-beam welding, and manufacturing method
    9.
    发明授权
    Electron-beam welded joint, steel for electron-beam welding, and manufacturing method 有权
    电子束焊接接头，电子束焊接用钢及其制造方法

    公开(公告)号：US08623154B2

    公开(公告)日：2014-01-07

    申请号：US13988737

    申请日：2011-10-27

    申请人： Ryuichi Honma ,  Ryuji Uemori ,  Tadashi Ishikawa ,  Akihiko Kojima ,  Manabu Hoshino

    发明人： Ryuichi Honma ,  Ryuji Uemori ,  Tadashi Ishikawa ,  Akihiko Kojima ,  Manabu Hoshino

    IPC分类号： C22C38/14 ,  C22C38/04 ,  C21D7/13 ,  B32B15/01

    CPC分类号： B23K35/3073 ,  B23K15/0093 ,  Y10T403/477 ,  Y10T428/12965

    摘要： An electron-beam welded joint including, by mass %, C: 0.02% to 0.1%, Si: 0.03% to 0.30%, Mn: 1.5% to 2.5%, Ti: 0.005 to 0.015%, N: 0.0020 to 0.0060%, O: 0.0010% to 0.0035%, Nb: 0% to 0.020%, V: 0% to 0.030%, Cr: 0% to 0.50%, Mo: 0% to 0.50%, Cu: 0% to 0.25%, Ni: 0% to 0.50%, B: 0% to 0.0030%, S: limited to 0.010% or less, P: limited to 0.015% or less, Al: limited to 0.004% or less, and a balance consisting of iron and unavoidable impurities, wherein an index value CeEB is 0.49% to 0.60%, a number of oxides having an equivalent circle diameter of 1.0 μm or more is 20 pieces/mm2 or less, and a number of oxides having an equivalent circle diameter of 0.05 μm or more and less than 0.5 μm is 1×103 pieces/mm2 to 1×105 pieces/mm2 at a thickness center portion.

    摘要翻译： 1.一种电子束焊接接头，以质量％计含有C：0.02〜0.1％，Si：0.03〜0.30％，Mn：1.5〜2.5％，Ti：0.005〜0.015％，N：0.0020〜0.0060％ O：0.0010〜0.0035％，Nb：0〜0.020％，V：0％〜0.030％，Cr：0〜0.50％，Mo：0〜0.50％，Cu：0〜0.25％ 0％〜0.50％，B：0％〜0.0030％，S：限制在0.010％以下，P：0.015％以下，Al：0.004％以下，余量由铁和不可避免的杂质 其中，指数值CeEB为0.49〜0.60％，当量圆直径为1.0μm以上的氧化物数为20个/ mm 2以下，当量圆直径为0.05μm以上的氧化物数 在厚度中心部分，小于0.5μm为1×103个/ mm 2〜1×105个/ mm 2。

    ELECTRON-BEAM WELDED JOINT, STEEL FOR ELECTRON-BEAM WELDING, AND METHOD OF MANUFACTURING THE SAME
    10.
    发明申请
    ELECTRON-BEAM WELDED JOINT, STEEL FOR ELECTRON-BEAM WELDING, AND METHOD OF MANUFACTURING THE SAME 审中-公开
    电子束焊接接头，电子束焊接用钢及其制造方法

    公开(公告)号：US20130189536A1

    公开(公告)日：2013-07-25

    申请号：US13877470

    申请日：2011-10-27

    申请人： Ryuichi Honma ,  Ryuji Uemori ,  Tadashi Ishikawa ,  Akihiko Kojima ,  Manabu Hoshino

    发明人： Ryuichi Honma ,  Ryuji Uemori ,  Tadashi Ishikawa ,  Akihiko Kojima ,  Manabu Hoshino

    IPC分类号： B32B15/01

    CPC分类号： B32B15/011 ,  B23K35/0222 ,  B23K35/3053 ,  B23K35/3073 ,  B32B15/015 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  Y10T428/12222 ,  Y10T428/12965

    摘要： A steel for electron-beam welding according to the present invention includes at least C: 0.02% to 0.10%, Si: 0.03% to 0.30%, Mn: 1.5% to 2.5%, Ti: 0.005% to 0.015%, N: 0.0020% to 0.0060%, and O: 0.0010% to 0.0035%, further includes S: limited to 0.010% or less, P: limited to 0.015% or less, and Al: limited to 0.004% or less, with a balance including iron and inevitable impurities. An index value CeEBB obtained by substituting composition of the steel into following Formula 1 falls in the range of 0.42 to 0.65%, the number of oxide having an equivalent circle diameter of 1.0 μm or more is 20 pieces/mm2 or less at a thickness center portion in cross section along the thickness direction of the steel, and the number of oxide containing Ti of 10% or more and having an equivalent circle diameter of not less than 0.05 μm or more and less than 0.5 μm falls in the range of 1×103 to 1×105 pieces/mm2 at the thickness center portion. CeEBB=C+¼Mn+ 1/15Cu+ 1/15Ni+⅕Cr+⅕Mo+⅕V  (Formula 1)

    摘要翻译： 根据本发明的用于电子束焊接的钢包括C：0.02％至0.10％，Si：0.03％至0.30％，Mn：1.5％至2.5％，Ti：0.005％至0.015％，N：0.0020 ％至0.0060％，O：0.0010％至0.0035％，进一步包括S：限于0.010％以下，P：限于0.015％以下，Al：限定在0.004％以下，余量包括铁和 不可避免的杂质。 通过用下述式1代替钢的组成而得到的指标值CeEBB落在0.42〜0.65％的范围内，等效圆直径为1.0μm以上的氧化物的数量在厚度中心为20个/ mm 2以下 沿着钢的厚度方向的横截面积，并且含有10％以上且具有不小于0.05mum以上且小于0.5μm的当量圆的氧化物的数量落在1× 厚度中心部分为103〜1×105个/ mm2。 CeEBB = C +¼Mn+ 1 / 15Cu + 1 / 15Ni + 1 / 5Cr + 1 / 5Mo + 1 / 5V（式1）