公开(公告)号：US20080156402A1

公开(公告)日：2008-07-03

申请号：US12025827

申请日：2008-02-05

申请人： Kent K. Coleman ,  David Wayne Gandy ,  Ramaswamy Viswanathan

发明人： Kent K. Coleman ,  David Wayne Gandy ,  Ramaswamy Viswanathan

IPC分类号： C21D1/00 ,  B23K28/00

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.

摘要翻译： 在一个实施例中，本发明提供了一种用于将两个金属片焊接在一起的方法，包括将第一金属片的表面与第一镍基填充金属进行焊接，其厚度足以隔离第一金属片中的热影响区 从后续焊接; 至少对第一金属片中的热影响区域进行热处理; 用具有与第一镍基填充金属具有相同组成的第二镍基填料金属涂覆第二金属片的表面，并且具有足以将第二金属片中的热影响区隔离以后的焊接的厚度; 至少对第二金属片中的热影响区域进行热处理; 以及与第一和第二镍基填充金属具有相同组成的第三镍基填料金属将经热处理的第一加工表面焊接到经热处理的第二加工表面。

公开(公告)号：US07591410B2

公开(公告)日：2009-09-22

申请号：US12025827

申请日：2008-02-05

申请人： Kent K. Coleman ,  David Wayne Gandy ,  Ramaswamy Viswanathan

发明人： Kent K. Coleman ,  David Wayne Gandy ,  Ramaswamy Viswanathan

IPC分类号： B23K35/24

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.

摘要翻译： 在一个实施例中，本发明提供了一种用于将两个金属片焊接在一起的方法，包括将第一金属片的表面与第一镍基填充金属进行焊接，其厚度足以隔离第一金属片中的热影响区 从后续焊接; 至少对第一金属片中的热影响区域进行热处理; 用具有与第一镍基填充金属具有相同组成的第二镍基填料金属涂覆第二金属片的表面，并且具有足以将第二金属片中的热影响区隔离以后的焊接的厚度; 至少对第二金属片中的热影响区域进行热处理; 以及与第一和第二镍基填充金属具有相同组成的第三镍基填料金属将经热处理的第一加工表面焊接到经热处理的第二加工表面。

公开(公告)号：US07371988B2

公开(公告)日：2008-05-13

申请号：US10972249

申请日：2004-10-22

申请人： Kent K. Coleman ,  David Wayne Gandy ,  Ramaswamy Viswanathan

发明人： Kent K. Coleman ,  David Wayne Gandy ,  Ramaswamy Viswanathan

IPC分类号： B23K9/067

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.

摘要翻译： 在一个实施例中，本发明提供了一种用于将两个金属片焊接在一起的方法，包括将第一金属片的表面与第一镍基填充金属进行焊接，其厚度足以隔离第一金属片中的热影响区 从后续焊接; 至少对第一金属片中的热影响区域进行热处理; 用具有与第一镍基填充金属具有相同组成的第二镍基填料金属涂覆第二金属片的表面，并且具有足以将第二金属片中的热影响区隔离以后的焊接的厚度; 至少对第二金属片中的热影响区域进行热处理; 以及与第一和第二镍基填充金属具有相同组成的第三镍基填料金属将经热处理的第一加工表面焊接到经热处理的第二加工表面。

公开(公告)号：US20120301344A1

公开(公告)日：2012-11-29

申请号：US13463467

申请日：2012-05-03

申请人： David W. Gandy ,  Kent K. Coleman ,  John Shingledecker

发明人： David W. Gandy ,  Kent K. Coleman ,  John Shingledecker

IPC分类号： B22F3/24 ,  B22F3/15

CPC分类号： B22F3/15 ,  B22F3/24 ,  B22F5/106

摘要： A method of manufacturing integral head and tube replacement sections includes the steps of providing a reverse mold of a head and tube replacement section, providing an atomized steel powder, and filling the reverse mold with the atomized steel powder. The method further includes the step of inserting the mold into a hot isostatic processing (HIP) furnace to consolidate and sinter the powder into the shape of the head and tube replacement section.

摘要翻译： 一种制造整体头管更换部分的方法包括提供头管更换部分的反模具，提供雾化钢粉末，并用雾化钢粉填充反模具的步骤。 该方法还包括将模具插入热等静压处理（HIP）炉中以将粉末固结和​​烧结成头管更换部分的形状的步骤。

公开(公告)号：US07562807B2

公开(公告)日：2009-07-21

申请号：US10839863

申请日：2004-05-05

申请人： Kent K. Coleman ,  David Wayne Gandy ,  Ramaswamy Viswanathan ,  William F. Newell, Jr.

发明人： Kent K. Coleman ,  David Wayne Gandy ,  Ramaswamy Viswanathan ,  William F. Newell, Jr.

IPC分类号： B23K35/00 ,  C22C19/05

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。

公开(公告)号：US20130121868A1

公开(公告)日：2013-05-16

申请号：US13463428

申请日：2012-05-03

申请人： David W. Gandy ,  Kent K. Coleman ,  John Shingledecker

发明人： David W. Gandy ,  Kent K. Coleman ,  John Shingledecker

IPC分类号： B22F7/02 ,  B22D23/06

CPC分类号： B22F7/02 ,  B22D23/06 ,  B22F3/15 ,  B22F2999/00 ,  B22F5/106 ,  B22F2207/01 ,  C22C33/0285

摘要： A method of manufacturing a weld-free apparatus for use in the connection of dissimilar metals includes the steps of providing a mold designed to replicate a reverse of the apparatus, introducing a low alloy, ferritic steel composition atomized powder into a first portion of the mold, introducing a series of atomized powders incrementally into a second portion of the mold to form a transition region between the ferritic steel composition and an austenitic stainless steel composition, and introducing an austenitic stainless steel composition atomized powder into a third portion of the mold. The method further includes the step of consolidating and melting the atomized powders in a high temperature, high pressure inert gas atmosphere to form the apparatus.

摘要翻译： 一种制造用于不同金属连接的无焊接装置的方法包括以下步骤：提供设计用于复制设备相反的模具，将低合金铁素体组合物雾化粉末引入模具的第一部分 将一系列雾化粉末逐渐引入模具的第二部分，以形成铁素体钢组合物和奥氏体不锈钢组合物之间的过渡区域，并将奥氏体不锈钢组合物雾化粉末引入模具的第三部分。 该方法还包括在高温高压惰性气体气氛中固化和熔化雾化粉末以形成该装置的步骤。

公开(公告)号：US06596957B2

公开(公告)日：2003-07-22

申请号：US09991216

申请日：2001-11-16

申请人： David Wayne Gandy ,  James William Hales ,  William Frederick Newell, Jr. ,  Kent K. Coleman ,  Gregory J. Frederick ,  Richard M. Tilley

发明人： David Wayne Gandy ,  James William Hales ,  William Frederick Newell, Jr. ,  Kent K. Coleman ,  Gregory J. Frederick ,  Richard M. Tilley

IPC分类号： B23K3102

CPC分类号： F28F11/00 ,  B23K9/0284 ,  B23P6/00 ,  Y10T29/49352

摘要： A method, an apparatus (150), and a prefabricated replacement tube (108) are provided for repairing a defect (112) in a tube (102), such as in a waterwall (100). In the method, a replacement tube (108) is prefabricated having a wall (116), a central opening (114) extending through a portion thereof, and a predetermined length. A length of the tube (102), including the defect (112), equal to the predetermined length is removed. The replacement tube (108) is positioned between stubs (126, 128) of the tube (102), and a rotatable torch (152) of an automated welding apparatus (150) inserted through the opening (114) to align with a joint between an end (118, 120) of the replacement tube and a stub (126, 128). The torch (152) is rotated to join it to the stub (126, 128) along the entire joint. The torch (152) is then removed, turned 180 degrees, and reinserted to weld the remaining joint. Optionally, the replacement tube (108) is held in position before welding by slip rings (140, 142) which are slid down to cover the joints.

摘要翻译： 提供了一种方法，装置（150）和预制替代管（108），用于修复诸如在水壁（100）中的管（102）中的缺陷（112）。 在该方法中，替代管（108）预制成具有壁（116），延伸穿过其一部分的中心开口（114）和预定长度。 除去等于预定长度的包括缺陷（112）的管（102）的长度。 置换管（108）位于管（102）的短管（126,128）之间，以及插入穿过开口（114）的自动焊接装置（150）的可旋转割炬（152），以与第 替换管的端部（118,120）和短截线（126,128）。 旋转火炬（152）以沿着整个接头将其连接到短棒（126,128）。 然后取下手电筒（152），转动180度，并重新插入以焊接剩余的接头。 可选地，替换管（108）在焊接之前通过滑动环（140,142）保持就位，滑动环（140,142）向下滑动以覆盖接头。