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    • 5. 发明申请
    • Heat treatment method and device for piping
    • 管道热处理方法及装置
    • US20060113010A1
    • 2006-06-01
    • US11290468
    • 2005-12-01
    • Noboru SaitouNobuyoshi YanagidaShoji HayashiSatoshi KannoKunio Enomoto
    • Noboru SaitouNobuyoshi YanagidaShoji HayashiSatoshi KannoKunio Enomoto
    • C21D9/08
    • C21D9/50C21D1/42C21D9/08Y02P10/253
    • In a method for heat treatment of an existing pipe constituting a piping system, for converting the residual stress at a welded metallic portion and a welding heat influenced portion of the inside surface of the pipe, into a compressive stress and thereby generate the compressive stress in the inside surface of the existing pipe, a coolant is retained in the pipe; an arbitrary portion of the outside surface of the pipe is heated; thereby a temperature distribution little in temperature difference is produced in the wall surface of the pipe at the heated portion; and then the coolant is allowed to flow. By converting the residual stress at the welded metallic portion and the welding heat influenced portion of the inside surface of the pipe, into the compressive stress, stress corrosion cracking generated from the welded metallic portion and the welding heat influenced portion can be suppressed.
    • 在构成管道系统的现有管道的热处理方法中,用于将焊接金属部分的残余应力和管内表面的焊接热影响部分变形为压缩应力,从而产生压缩应力 现有管道的内表面,冷却剂被保留在管道中; 管道的外表面的任意部分被加热; 从而在加热部分的管的壁表面产生温差很小的温差; 然后允许冷却剂流动。 通过将焊接金属部分的残余应力和管内表面的焊接热影响部分转化为压缩应力,可以抑制从焊接金属部分和焊接热影响部分产生的应力腐蚀裂纹。
    • 6. 发明授权
    • Corrosive environment sensor, corrosive environment measuring apparatus
and corrosive environment control system
    • 腐蚀性环境传感器,腐蚀性环境测量仪器和腐蚀性环境控制系统
    • US5556596A
    • 1996-09-17
    • US308542
    • 1994-09-21
    • Makoto HayashiSatoshi KannoNaoto Saito
    • Makoto HayashiSatoshi KannoNaoto Saito
    • G01N3/32G01N3/00G01N3/02G01N3/20G01N17/00G01N27/26C01N17/00
    • G01N3/20G01N17/00G01N2203/0066G01N2203/024
    • A corrosive environment sensor comprises an elongate metal member having a pair of beam portions, each extending in a length direction between first and second ends of the metal member, and having a crack growth portion formed therein and extending in the length direction of the metal member from a crack starting end toward the second end, wherein the crack starting end is at an intermediate position between the first and second ends of the metal member and is between the pair of beam portions, a changeable load member having an expansible chamber disposed between the beam portion around the first end of the metal member and a means for supplying pressurized fluid to the expansible chamber. The changeable load member applies a load to the crack growth portion and the means for supplying pressurized fluid to the expansible chamber is responsible for ensuring that the displacement of the beam portions is accomplished in such a manner so as to provide a constant stress intensity factor at a crack growing point.
    • 腐蚀性环境传感器包括细长金属构件,其具有一对梁部分,每一个梁部分沿金属构件的第一和第二端之间的长度方向延伸,并且在其中形成有裂纹扩展部分,并且在金属构件的长度方向上延伸 从裂纹起始端朝向第二端,其中裂纹起始端处于金属构件的第一和第二端之间的中间位置,并且位于一对梁部之间,可变载荷构件具有可扩张室, 围绕金属构件的第一端的梁部分和用于将加压流体供应到可膨胀室的装置。 可变负载构件向裂纹扩展部分施加负载,并且用于向可膨胀室供应加压流体的装置负责确保梁部分的位移以这样的方式实现,以便在 一个裂缝增长点。
    • 7. 发明授权
    • Corrosive environment sensor, corrosive environment measuring apparatus
and corrosive environment control system
    • 腐蚀性环境传感器,腐蚀性环境测量仪器和腐蚀性环境控制系统
    • US5378429A
    • 1995-01-03
    • US74320
    • 1993-06-09
    • Makoto HayashiSatoshi KannoNaoto Saito
    • Makoto HayashiSatoshi KannoNaoto Saito
    • G01N3/32G01N3/00G01N3/02G01N3/20G01N17/00G01N27/26G01N19/08
    • G01N3/20G01N17/00G01N2203/0066G01N2203/024
    • A corrosive environment sensor comprises an elongate member having a pair of elongate beam portions and a crack growth portion formed between the pair of beam portions so as to extend axially, and a wedge inserted between the pair of beam portions, wherein the crack growth portion has width thereof defined by quadratic curves extending axially so as to decrease from an axially intermediate portion of the sensor member to an axially intermediate portion of the crack growth portion and increase from the axially intermediate portion of the crack growth portion toward an end of the sensor member. The quadratic curves each consist of a first circular arc with first radius between the axially intermediate portion of the sensor member and the axially intermediate portion of the crack growth portion and a second circular arc with second radius less than the first radius between the axially intermediate portion of the crack growth portion and around the second end of the sensor member. There are further disclosed a corrosive environment measuring apparatus employing the above-mentioned corrosive environment sensor, and a corrosive environment control system employing the above-mentioned corrosive environment measuring apparatus.
    • 腐蚀性环境传感器包括细长构件,其具有一对细长的梁部分和在所述一对梁部分之间形成以便轴向延伸的裂纹扩展部分,以及插入在所述一对梁部分之间的楔形物,其中所述裂纹扩展部分具有 其宽度由沿轴向延伸的二次曲线限定,以便从传感器构件的轴向中间部分减小到裂纹增长部分的轴向中间部分,并且从裂纹扩展部分的轴向中间部分向传感器构件的端部增加 。 二次曲线各自包括第一圆弧,其第一半径在传感器构件的轴向中间部分与裂纹扩展部分的轴向中间部分之间,第二圆弧的第二半径小于轴向中间部分之间的第一半径 的裂纹生长部分和传感器部件的第二端周围。 还公开了采用上述腐蚀性环境传感器的腐蚀性环境测量装置和采用上述腐蚀性环境测量装置的腐蚀性环境控制系统。
    • 8. 发明授权
    • Double-cantilever beam type test piece and corrosive environmental crack
growth measuring apparatus
    • 双悬臂式试验片和腐蚀性环境裂纹扩展测量装置
    • US5317925A
    • 1994-06-07
    • US671038
    • 1991-03-18
    • Makoto HayashiSatoshi KannoNaoto Saito
    • Makoto HayashiSatoshi KannoNaoto Saito
    • G01N17/00G01N3/00G01N3/02G01N3/06G01N3/08G01N3/32G01N27/20G21C17/003G01N19/00
    • G01N3/08G01N27/20G01N2203/0066G01N2203/024G01N2203/027G01N2203/0617
    • A corrosive environmental crack length measuring apparatus including a double-cantilever beam type test piece having a tapered portion in a portion where the crack grows, a slit, and at least two holes, with the test piece being placed within a corrosive environment. Leads inserted in the holes of the test piece to be spot-welded thereto to supply a direct current to the holes. A current polarity switching device is provided with, a stabilized direct current power supply connected with the direct current supplying leads through the current polarity switching device. Potential difference measuring leads are inserted in holes formed in two outer faces of the double-cantilever beam type test piece parallel to a section of a crack growing portion at a plurality of points along the crack growing direction so as to be spot-welded thereto. A multiplexer is provided with, a micro-voltmeter connected with the potential difference measuring leads through the multiplexer, and an arithmetic unit judges crack length based on ratios between potential differences measured by switching the polarity of direct current using the current polarity switching device.
    • 一种腐蚀性环境裂纹长度测量装置,包括在所述裂纹生长的部分中具有锥形部分的双悬臂梁型试验片,狭缝和至少两个孔,所述试验片放置在腐蚀环境中。 插入试件的孔中的引线被点焊,以将直流电流提供给孔。 电流极性开关装置具有通过电流极性开关装置与直流电源线连接的稳定的直流电源。 将潜在差测量引线插入在双悬臂梁式试验片的两个外表面上形成的孔中,该孔与沿裂纹生长方向的多个点处的裂纹扩展部分的一段平行,以便点焊。 多路复用器具有通过多路复用器与电位差测量引线连接的微电压计,并且运算单元基于使用电流极性切换装置切换直流电流的极性而测量的电位差之间的比率来判定裂纹长度。