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    Method for inspection and repair
    1.
    发明授权
    Method for inspection and repair 失效
    检查和维修方法

    公开(公告)号：US07617603B2

    公开(公告)日：2009-11-17

    申请号：US11364478

    申请日：2006-02-28

    申请人： Kent Coleman ,  David Wayne Gandy ,  Greg Frederick ,  Rich Tilley

    发明人： Kent Coleman ,  David Wayne Gandy ,  Greg Frederick ,  Rich Tilley

    IPC分类号： B23P6/00

    CPC分类号： B23P6/00 ,  F22B37/00 ,  F22B37/003 ,  F28F11/02 ,  Y10T29/49352 ,  Y10T29/49718

    摘要： A method for the inspection and repair of a tube includes electrical discharge machining an access hole into the tube, optionally at or near the uppermost location on the tube, near the upper header; performing inspection of the tube, optionally using a visual or an eddy current inspection technique; providing an inner diameter flush-mounted plug insert which has been machined for re-inserting into the access hole; and attaching the plug insert to the tube.

    摘要翻译： 一种用于检查和修理管的方法包括将上述集管的附近的可选择地在管的最上部位置处或附近的入口加工到管中; 执行管的检查，任选地使用视觉或涡流检查技术; 提供已经加工以重新插入进入孔的内径嵌入式插头插入件; 并将插头插入件连接到管子上。

    METHOD FOR REPAIRING HEAT RECOVERY STEAM GENERATOR TUBE-TO-HEADER DAMAGE
    3.
    发明申请
    METHOD FOR REPAIRING HEAT RECOVERY STEAM GENERATOR TUBE-TO-HEADER DAMAGE 审中-公开
    修复热回收蒸汽发生器管道损伤的方法

    公开(公告)号：US20090223053A1

    公开(公告)日：2009-09-10

    申请号：US12463042

    申请日：2009-05-08

    申请人： David Wayne GANDY ,  Greg FREDERICK ,  Kent COLEMAN

    发明人： David Wayne GANDY ,  Greg FREDERICK ,  Kent COLEMAN

    IPC分类号： B23P6/00

    CPC分类号： B23P6/00 ,  B23K1/0012 ,  B23K9/0286 ,  B23K9/0288 ,  B23K9/16 ,  B23K26/28 ,  B23K37/053 ,  B23K2101/06 ,  B23K2101/14 ,  F16L55/179 ,  F22B37/003 ,  F22B37/104 ,  F28F9/182 ,  F28F11/00 ,  Y10T29/49352 ,  Y10T29/49728

    摘要： A method for repairing a heat recovery steam generator (HSRG) header to tube attachment damage, includes providing an access window in the header opposite the damaged header to tube attachment location; removing the header to tube attachment damage; inserting a tapered stub tube into a header penetration centered axially immediately over the tube; effecting a profile weld between the header and the tapered stub tube at the header penetration from the inside surface of the header; welding the tapered stub tube to the existing tube through the header inside diameter; welding shut the access window; and completing a post weld heat treatment of all the welds.

    摘要翻译： 一种用于修复热回收蒸汽发生器（HSRG）集管到管附件损坏的方法，包括在所述集管中的与所述损坏的集管相连的管连接位置处提供进入窗口; 去除管头附件损坏; 将锥形短截头管插入轴向立即在管上方的头部穿透中; 在集管和锥形短管之间在集管的内表面处的集管穿透处实现轮廓焊接; 通过集管内径将锥形短管焊接到现有管; 焊接关门窗; 并完成所有焊缝的焊后热处理。

    Weld filler for welding dissimilar alloy steels and method of using same
    5.
    发明申请
    Weld filler for welding dissimilar alloy steels and method of using same 有权
    用于焊接异种合金钢的焊接填料及其使用方法

    公开(公告)号：US20050247763A1

    公开(公告)日：2005-11-10

    申请号：US10839863

    申请日：2004-05-05

    申请人： Kent Coleman ,  David Gandy ,  Ramaswamy Viswanathan ,  William Newell

    发明人： Kent Coleman ,  David Gandy ,  Ramaswamy Viswanathan ,  William Newell

    IPC分类号： B23K35/24 ,  B23K35/30

    CPC分类号： C22C19/057 ,  B22F2998/00 ,  B23K35/3033 ,  C22C1/0433

    摘要： Accordingly, the present invention provides a weld filler composition for joining different alloy steel pieces with substantially different chromium content, such as joining low alloy ferritic steel to high alloy ferritic steel, low alloy ferritic steel to austenitic stainless steel, or high alloy ferritic steel to austenitic stainless steel, and a method using the same. In one embodiment, the present invention provides a composition for a weld filler comprising nickel, iron, and chromium, which collectively comprise at least 50% by weight of the weld filler; niobium, carbon, manganese, molybdenum, and silicon, which collectively comprise no more than 50% by weight of the weld filler, and a niobium to carbon ratio of approximately 20 or less.

    摘要翻译： 因此，本发明提供了一种焊接填料组合物，用于将不同的铬含量的不同合金钢片接合，例如将低合金铁素体钢接合到高合金铁素体钢，低合金铁素体钢到奥氏体不锈钢或高合金铁素体钢， 奥氏体不锈钢及其使用方法。 在一个实施方案中，本发明提供了一种用于焊接填料的组合物，其包含镍，铁和铬，它们共同包含至少50重量％的焊接填料; 铌，碳，锰，钼和硅，其总共不超过焊接填料的50重量％，铌与碳的比例为约20以下。

    Methods for extending the life of alloy steel welded joints by elimination and reduction of the HAZ
    7.
    发明申请
    Methods for extending the life of alloy steel welded joints by elimination and reduction of the HAZ 失效

    公开(公告)号：US20060086708A1

    公开(公告)日：2006-04-27

    申请号：US10972249

    申请日：2004-10-22

    申请人： Kent Coleman ,  David Gandy ,  Ramaswamy Viswanathan

    发明人： Kent Coleman ,  David Gandy ,  Ramaswamy Viswanathan

    IPC分类号： B23K9/23

    CPC分类号： B23K35/004 ,  B23K35/3033 ,  B23K35/3066 ,  B23K2103/05

    摘要： In one embodiment, the present invention provides a method for welding together two metal pieces, comprising buttering a surface of a first metal piece with a first nickel-based filler metal at a thickness sufficient to isolate a heat-affected zone in the first metal piece from subsequent welding; heat-treating at least the heat-affected zone in the first metal piece; buttering a surface of a second metal piece with a second nickel-based filler metal having the same composition as the first nickel-based filler metal and at a thickness sufficient to isolate a heat-affected zone in the second metal piece from subsequent welding; heat-treating at least the heat-affected zone in the second metal piece; and welding the heat-treated first buttered surface to the heat-treated second buttered surface with a third nickel-based filler metal having the same composition as the first and second nickel-based filler metals.