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    Martensitic stainless steel pipe
    1.
    发明申请
    Martensitic stainless steel pipe 有权
    马氏体不锈钢管

    公开(公告)号：US20090017238A1

    公开(公告)日：2009-01-15

    申请号：US10587807

    申请日：2004-12-01

    申请人： Yukio Miyata ,  Mitsuo Kimura ,  Noritsugu Itakura ,  Katsumi Masamura

    发明人： Yukio Miyata ,  Mitsuo Kimura ,  Noritsugu Itakura ,  Katsumi Masamura

    IPC分类号： B32B1/08 ,  C22C38/18 ,  C22C38/40 ,  C22C38/58 ,  C22C38/60 ,  C22C38/52 ,  C22C38/42 ,  C22C38/44

    CPC分类号： C22C38/44 ,  C21D1/25 ,  C21D6/004 ,  C21D9/14 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  Y10T428/13

    摘要： A martensitic stainless steel pipe having a heat-affected zone with high resistance to intergranular stress corrosion cracking is provided. In particular, the martensitic stainless steel pipe contains less than 0.0100% of C; less than 0.0100% of N; 10% to 14% of Cr; and 3% to 8% of Ni on a mass basis. Alternatively, the martensitic stainless steel pipe may further contain Si, Mn, P, S, and Al within an appropriate content range. The martensitic stainless steel pipe may further contain one or more selected from the group consisting of 4% or less of Cu, 4% or less of Co, 4% or less of Mo, and 4% or less of W and one or more selected from the group consisting of 0.15% or less of Ti, 0.10% or less of Nb, 0.10% or less of V, 0.10% or less of Zr, 0.20% or less of Hf, and 0.20% or less of Ta on a mass basis. The content Csol defined by the following equation is equal to less than 0.0050%: Csol=C−⅓×Cpre, wherein Cpre=12.0{Ti/47.9+½(Nb/92.9+Zr/91.2)+⅓(V/50.9+Hf/178.5+Ta/180.9)−N/14.0} or Cpre=0 when Cpre

    摘要翻译： 提供具有耐晶间应力腐蚀开裂性高的热影响区的马氏体不锈钢管。 特别地，马氏体不锈钢管含有小于0.0100％的C; 小于0.0100％的N; 10％〜14％的Cr; 和3％〜8％的Ni。 或者，马氏体不锈钢管可以在适当的含量范围内进一步含有Si，Mn，P，S和Al。 马氏体系不锈钢管可以进一步含有选自Cu，4％以下的Co，4％以下的Mo，4％以下的W和1种以上的选自Cu，4％以下的1种以上 由Ti的0.15％以下，Nb：0.10％以下，V：0.10％以下，Zr：0.10％以下，Hf：0.20％以下，Ta：0.20％以下 基础。 C sol = C-1 / 3xCpre，其中Cpre = 12.0 {Ti / 47.9 +½（Nb / 92.9 + Zr / 91.2）+1/3（V / 50.9 + Hf / 178.5 + Ta / 180.9）-N / 14.0}或Cpre = 0。

    Martensitic stainless steel pipe
    2.
    发明授权
    Martensitic stainless steel pipe 有权
    马氏体不锈钢管

    公开(公告)号：US08168008B2

    公开(公告)日：2012-05-01

    申请号：US10587807

    申请日：2004-12-01

    申请人： Yukio Miyata ,  Mitsuo Kimura ,  Noritsugu Itakura ,  Katsumi Masamura

    发明人： Yukio Miyata ,  Mitsuo Kimura ,  Noritsugu Itakura ,  Katsumi Masamura

    IPC分类号： C22C38/40

    CPC分类号： C22C38/44 ,  C21D1/25 ,  C21D6/004 ,  C21D9/14 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  Y10T428/13

    摘要： A martensitic stainless steel pipe having a heat-affected zone with high resistance to intergranular stress corrosion cracking is provided. In particular, the martensitic stainless steel pipe contains less than 0.0100% of C; less than 0.0100% of N; 10% to 14% of Cr; and 3% to 8% of Ni on a mass basis. Alternatively, the martensitic stainless steel pipe may further contain Si, Mn, P, S, and Al within an appropriate content range. The martensitic stainless steel pipe may further contain one or more selected from the group consisting of 4% or less of Cu, 4% or less of Co, 4% or less of Mo, and 4% or less of W and one or more selected from the group consisting of 0.15% or less of Ti, 0.10% or less of Nb, 0.10% or less of V, 0.10% or less of Zr, 0.20% or less of Hf, and 0.20% or less of Ta on a mass basis. The content Csol defined by the following equation is equal to less than 0.0050%: Csol=C−⅓×Cpre, wherein Cpre=12.0 {Ti/47.9+½(Nb/92.9+Zr/91.2)+⅓(V/50.9+Hf/178.5+Ta/180.9)−N/14.0} or Cpre=0 when Cpre

    摘要翻译： 提供具有耐晶间应力腐蚀开裂性高的热影响区的马氏体不锈钢管。 特别地，马氏体不锈钢管含有小于0.0100％的C; 小于0.0100％的N; 10％〜14％的Cr; 和3％〜8％的Ni。 或者，马氏体不锈钢管可以在适当的含量范围内进一步含有Si，Mn，P，S和Al。 马氏体系不锈钢管可以进一步含有选自Cu，4％以下的Co，4％以下的Mo，4％以下的W和1种以上的选自Cu，4％以下的1种以上 由Ti的0.15％以下，Nb：0.10％以下，V：0.10％以下，Zr：0.10％以下，Hf：0.20％以下，Ta：0.20％以下 基础。 Csol = C-1/3×Cpre，其中Cpre = 12.0 {Ti / 47.9 + 1 /（Nb / 92.9 + Zr / 91.2）+ 1/3（V / 50.9 + 当Cpre <0时，Hf / 178.5 + Ta / 180.9）-N / 14.0}或Cpre = 0。

    TUBE EXPANDING METHOD FOR MANUFACTURING METAL TUBE
    4.
    发明申请
    TUBE EXPANDING METHOD FOR MANUFACTURING METAL TUBE 有权
    用于制造金属管的管扩张方法

    公开(公告)号：US20150114073A1

    公开(公告)日：2015-04-30

    申请号：US14404241

    申请日：2012-05-29

    申请人： Tatsuro Katsumura ,  Noritsugu Itakura ,  Seiichiro Nambu ,  Kazutoshi Ishikawa

    发明人： Tatsuro Katsumura ,  Noritsugu Itakura ,  Seiichiro Nambu ,  Kazutoshi Ishikawa

    IPC分类号： G06F17/50 ,  B21D39/20

    CPC分类号： B21D39/20 ,  B21C1/24 ,  B21C3/16 ,  B21D41/026 ,  G06F17/5018

    摘要： Through a tube expanding processing simulation, a workpiece shape in a state where a tip of a workpiece 10 has advanced by 1.0 m or more after passing through a shoulder portion 3 of a tool 1 is evaluated. A hollow piece shape and a tool shape such that the external diameter is within ±1% of the target, the thickness is within ±7.5% of the target, and the internal gap between the hollow piece and the tool is 1.0 mm or less are obtained by repeated calculation, and thereby actual tube expanding manufacturing conditions are determined.

    摘要翻译： 通过管扩径处理模拟，评估在通过工具1的肩部3之后工件10的前端前进1.0m以上的状态下的工件形状。 中空件形状和工具形状使得外径在目标的±1％内，厚度在目标的±7.5％以内，中空件与工具之间的内部间隙为1.0mm以下 通过重复计算获得，从而确定实际的管膨胀制造条件。

    Method of producing a bainite steel product
    6.
    发明授权
    Method of producing a bainite steel product 失效
    生产贝氏体钢产品的方法

    公开(公告)号：US06299710B1

    公开(公告)日：2001-10-09

    申请号：US09272572

    申请日：1999-03-19

    申请人： Noritsugu Itakura ,  Mitsuhiro Okatsu ,  Fumimaru Kawabata ,  Keniti Amano

    发明人： Noritsugu Itakura ,  Mitsuhiro Okatsu ,  Fumimaru Kawabata ,  Keniti Amano

    IPC分类号： C21D800

    CPC分类号： C21D8/0226 ,  C21D8/0263 ,  C21D2211/002 ,  C22C38/04 ,  C22C38/12

    摘要： A high-strength and high-toughness steel product having at least about 0.001% and less than about 0.030% by weight C, not more than about 0.60% by weight Si, from about 0.8% to 3.0% by weight Mn, from about 0.005 to 0.20% by weight Nb, from about 0.0003 to 0.0050% by weight B, and not more than about 0.005% by weight AL wherein at least 90% of the product has a bainite structure. A method of making this steel product is subject to less stringent production controls because of the nature of the composition.

    摘要翻译： 具有至少约0.001％且小于约0.030％（重量）C，不超过约0.60％（重量）Si，约0.8％至3.0％（重量）的Mn，约0.005 至0.20重量％的Nb，约0.0003至0.0050重​​量％的B和不超过约0.005重量％的AL，其中至少90％的产物具有贝氏体组织。 由于组合物的性质，制造该钢产品的方法受到较不严格的生产控制。

    High-strength high-toughness steel products
    7.
    发明授权
    High-strength high-toughness steel products 失效
    高强度高韧性钢制品

    公开(公告)号：US06521057B1

    公开(公告)日：2003-02-18

    申请号：US09929057

    申请日：2001-08-15

    申请人： Noritsugu Itakura ,  Mitsuhiro Okatsu ,  Fumimaru Kawabata ,  Keniti Amano

    发明人： Noritsugu Itakura ,  Mitsuhiro Okatsu ,  Fumimaru Kawabata ,  Keniti Amano

    IPC分类号： C22C3812

    CPC分类号： C21D8/0226 ,  C21D8/0263 ,  C21D2211/002 ,  C22C38/04 ,  C22C38/12

    摘要： A high-strength and high-toughness steel product having at least about 0.001% and less than about 0.030% by weight C, not more than about 0.60% by weight Si, from about 0.8 to 3.0% by weight Mn, from about 0.005 to 0.20% by weight Nb, from about 0.0003 to 0.0050% by weight B, and not more than about 0.005% by weight Al, wherein at least 90% of the product has a bainite structure. A method of making this steel product is subject to less stringent production controls because of the nature of the composition.

    摘要翻译： 一种高强度和高韧性的钢产品，其具有至少约0.001％且小于约0.030％（重量）的C，不超过约0.60％（重量）的Si，约0.8至3.0％（重量）的Mn，约0.005至 0.20重量％的Nb，约0.0003〜0.0050重​​量％的B，不超过约0.005重量％的Al，其中至少90％的产物具有贝氏体结构。 由于组合物的性质，制造该钢产品的方法受到较不严格的生产控制。