Local buckling performance evaluating method for steel pipe, steel pipe designing method, steel pipe manufacturing method, and steel pipe
    1.
    发明授权
    Local buckling performance evaluating method for steel pipe, steel pipe designing method, steel pipe manufacturing method, and steel pipe 有权
    钢管局部屈曲性能评价方法,钢管设计方法,钢管制造方法和钢管

    公开(公告)号:US08191221B2

    公开(公告)日:2012-06-05

    申请号:US11884749

    申请日:2005-12-15

    IPC分类号: B23Q17/00

    摘要: A method for evaluating local buckling performance of a steel pipe includes obtaining a stress-strain relationship of a material having a yield plateau in the stress-strain relationship; determining the comparison of a starting strain of strain-hardening in the stress-strain relationship obtained and a critical strain of the steel pipe; and evaluating that the steel pipe has a possibility of being applied to a structure that requires plastic design when the critical strain is determined to be larger than the starting strain and evaluating that the steel pipe has no possibility of being applied to a structure that requires plastic design when the critical strain is determined to be not larger than the starting strain.

    摘要翻译: 评估钢管局部屈曲性能的方法包括获得应力 - 应变关系中具有屈服平台的材料的应力 - 应变关系; 确定所获得的应力 - 应变关系中的应变硬化的起始应变与钢管的临界应变的比较; 并且当临界应变被确定为大于起始应变时,评估钢管可能被应用于需要塑性设计的结构,并且评估钢管不可能应用于需要塑性的结构 当临界应变被确定为不大于起始应变时的设计。

    LOCAL BUCKLING PERFORMANCE EVALUATING METHOD FOR STEEL PIPE, STEEL PIPE DESIGNING METHOD, STEEL PIPE MANUFACTURING METHOD, AND STEEL PIPE
    3.
    发明申请
    LOCAL BUCKLING PERFORMANCE EVALUATING METHOD FOR STEEL PIPE, STEEL PIPE DESIGNING METHOD, STEEL PIPE MANUFACTURING METHOD, AND STEEL PIPE 有权
    钢管,钢管设计方法,钢管制造方法和钢管的本地开挖性能评价方法

    公开(公告)号:US20120143527A1

    公开(公告)日:2012-06-07

    申请号:US13370372

    申请日:2012-02-10

    IPC分类号: G06F19/00 G01N3/00

    摘要: A method for evaluating local buckling performance of a steel pipe includes obtaining a stress-strain relationship of a material having a yield plateau in the stress-strain relationship; determining the comparison of a starting strain of strain-hardening in the stress-strain relationship obtained and a critical strain of the steel pipe; and evaluating that the steel pipe has a possibility of being applied to a structure that requires plastic design when the critical strain is determined to be larger than the starting strain and evaluating that the steel pipe has no possibility of being applied to a structure that requires plastic design when the critical strain is determined to be not larger than the starting strain.

    摘要翻译: 评估钢管局部屈曲性能的方法包括获得应力 - 应变关系中具有屈服平台的材料的应力 - 应变关系; 确定所获得的应力 - 应变关系中的应变硬化的起始应变与钢管的临界应变的比较; 并且当临界应变被确定为大于起始应变时,评估钢管可能被应用于需要塑性设计的结构,并且评估钢管不可能应用于需要塑性的结构 当临界应变被确定为不大于起始应变时的设计。

    Martensitic stainless steel pipe
    4.
    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

    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。

    Method for Determining Strain Hardening Property of Line Pipe
    5.
    发明申请
    Method for Determining Strain Hardening Property of Line Pipe 有权
    确定管线应变硬化性能的方法

    公开(公告)号:US20080276714A1

    公开(公告)日:2008-11-13

    申请号:US10581403

    申请日:2004-12-10

    IPC分类号: G01B5/30 B23P17/00 F16L9/00

    摘要: A method for determining a strain hardening property of a pipe enabling reduction of costs while ensuring pipeline integrity is provided. Moreover, a method for manufacturing a pipe based on the method for determining the strain hardening property of the pipe, a pipe manufactured by means of the method for manufacturing the pipe, and a pipeline are proposed. The method for determining the strain hardening property of the pipe according to the present invention includes a step of defining pipe dimensions where a diameter D, a thickness t, and a required critical local buckling strain εreq of the pipe are set as conditions to be satisfied; a step of acquiring a strain hardening property for acquiring the strain hardening property in the vicinity of a buckling point of the pipe satisfying the conditions set in the step of defining the pipe dimensions; and a step of setting the strain hardening property as a condition to be satisfied by the stress-strain curve of the pipe.

    摘要翻译: 提供一种用于确定管道的应变硬化性能的方法,其能够在确保管道完整性的同时降低成本。 此外,提出了一种基于用于确定管的应变硬化性的方法,通过管的制造方法制造的管和管道的管的制造方法。 根据本发明的用于确定管的应变硬化性质的方法包括确定管尺寸的步骤,其中直径D,厚度t和所需的临界局部屈曲应变εε 管道设定为要满足的条件; 获得应变硬化性的步骤,用于获得满足在限定管尺寸的步骤中设定的条件的管的屈曲点附近的应变硬化性; 以及将应变硬化性设定为要通过管的应力 - 应变曲线来满足的条件的步骤。

    Martensitic stainless steel pipe
    8.
    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

    IPC分类号: C22C38/40

    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。

    Method for determining strain hardening property of line pipe
    10.
    发明授权
    Method for determining strain hardening property of line pipe 有权
    确定管线应变硬化性能的方法

    公开(公告)号:US07513165B2

    公开(公告)日:2009-04-07

    申请号:US10581403

    申请日:2004-12-10

    IPC分类号: G01B5/30

    摘要: A method for determining a strain hardening property of a pipe enabling reduction of costs while ensuring pipeline integrity is provided. Moreover, a method for manufacturing a pipe based on the method for determining the strain hardening property of the pipe, a pipe manufactured by means of the method for manufacturing the pipe, and a pipeline are proposed. The method for determining the strain hardening property of the pipe according to the present invention includes a step of defining pipe dimensions where a diameter D, a thickness t, and a required critical local buckling strain εreq of the pipe are set as conditions to be satisfied; a step of acquiring a strain hardening property for acquiring the strain hardening property in the vicinity of a buckling point of the pipe satisfying the conditions set in the step of defining the pipe dimensions; and a step of setting the strain hardening property as a condition to be satisfied by the stress-strain curve of the pipe.

    摘要翻译: 提供一种用于确定管道的应变硬化性能的方法,其能够在确保管道完整性的同时降低成本。 此外,提出了一种基于用于确定管的应变硬化性的方法,通过管的制造方法制造的管和管道的管的制造方法。 根据本发明的用于确定管的应变硬化性质的方法包括限定管尺寸的步骤,其中管道的直径D,厚度t和所需的临界局部屈曲应变ε值被设定为要满足的条件 ; 获得应变硬化性的步骤,用于获得满足在限定管尺寸的步骤中设定的条件的管的屈曲点附近的应变硬化性; 以及将应变硬化性设定为要通过管的应力 - 应变曲线来满足的条件的步骤。