Abstract:
A method for metallurgically joining a tube to a member. A tube (118) is obtained having a longitudinal axis (120) and having an end portion (122), wherein the end portion includes a fold (124), and wherein the fold includes longitudinally-spaced-apart first and second fold portions (126 and 128). A member (such as, but not limited to, a plate or a second tube (130)) is obtained. The tube and the member are disposed with the end portion contacting the member. A resistance welding current path is created through the tube and the member proximate the end portion and the end portion is relatively longitudinally moved deformingly against the member creating a weld zone which includes at least some of the end portion and at least some of the member.
Abstract:
A method for metallurgically joining a tube to a member. A tube having a flange is obtained, and a member is obtained. The tube and the member are positioned with the flange contacting the member directly and/or indirectly through an intervening welding/brazing joining material. The flange and/or the member are segmented and their contact is a segmented contact at spaced-apart contact areas between the flange and the member. A resistance welding/brazing current path is created through the tube and the member at a first contact area creating a first weld/braze zone, which includes at least some of the flange and at least some of the member. Then, a resistance welding/brazing current path is created through the tube and the member at a different second contact area creating a second weld/braze zone which includes at least some of the flange and at least some of the member.
Abstract:
A system for creating a clad material that includes at least one substrate; at least one cladding layer; at least one surface activation layer disposed between the at least one substrate and the at least one cladding layer; and a resistance seam welder, wherein the resistance seam welder is operative to generate heat and pressure sufficient to melt the at least one surface activation layer and form a bond between the at least one substrate and the at least one cladding layer when the at least one surface activation layer is cooled.
Abstract:
The invention includes an apparatus (10) and associated method for precisely aligning two pieces of weldable material and tack welding the two pieces together. The apparatus (10) contains means (14, 18) for independently securing the two pieces of weldable material and for centering the junction of the two pieces in line with the tack welding electrodes (29).
Abstract:
A bi-metallic mechanically lined pipe (112a, 112b; MLP) has an outer pipe (114) of a first carbon steel based material, and an inner liner (116) of a second corrosion resistant material, wherein the inner liner (116) is metallurgically bonded to the outer pipe (114) at the extremities (17) of the outer pipe (114). A method of manufacturing such kind of MLP pipe is also defined.
Abstract:
Bei einer Schweissvorrichtung zum Langsnahtschweissen von Dosenzargen (31 ') mit Elektrodenrollen (8, 17) werden im Drahtverlauf drei Antriebsstufen (4, 10, 20) vorgesehen, mittels welchen die Drahtelektrode (25) zusätzlich zum Antrieb durch die Elektrodenrollen (8, 17) angetrieben wird. Bevorzugt wird dabei durch die drei Antriebsstufen (4, 10, 20) eine elastische Dehnung der Drahtelektrode (25) bewirkt.
Abstract:
A method for metallurgically joining a tube to a member. A tube having a flange is obtained and a member is obtained. A welding/brazing electrode wheel is obtained having an axis of rotation and having a rim. The tube and the member are positioned with the flange contacting the member directly and/or indirectly through an intervening welding/brazing joining material. The rim of the electrode wheel is positioned in direct contact with the flange. A resistance welding/brazing current path is created through the flange and the member using at least the electrode wheel creating a seam weld/braze zone which includes at least some of the flange and at least some of the member. During the current path creation step, the electrode wheel is rotated about the axis of rotation.