Abstract: This invention is related to a pneumatic lifting system for hydrocarbon production, comprising at least one mandrel (1) and at least one gas flow control valve (11), wherein the at least one mandrel (1) is connected to a production string (3), wherein the production string is positioned inside a well casing (2), wherein it comprises a straddle (10) supported on the production string and enveloping the mandrel, wherein in the region of the gas outlet (110) of the gas flow control valve (11) a chamber (105) is formed, wherein the straddle (10) comprises a means of fluidic communication (102) adapted to feed gas inside the straddle (10).

Abstract: Provided is a laser-weld manufacturing method. The method includes: providing a first component and a second component that are separated from one another by a gap, the gap having a depth and a width and at least one of the first component and the second component having a sacrificial edge-tab; exposing the sacrificial edge-tab to laser energy, the laser energy being sufficient to melt at least a portion of the sacrificial edge-tab; forming a melt-pool in the gap between the first component and the second component, the melt-pool including material from the melted portion of the sacrificial edge-tab; and solidifying the melt-pool to form a weld that joins the first component and the second component together.

Abstract: A stacking-type header includes a first plate having a first through-hole; a second plate having a plurality of second through-holes; a third plate in which a flow path that communicates between the first through-hole and the second through-holes is formed, a first pipe including a first end portion that is inserted into the first through-hole; a plurality of second pipes each including a second end portion that is inserted into a corresponding one of the second through-holes; and brazing portions. The first pipe includes a first expanded portion in the first end portion, the first expanded portion having an outer peripheral surface that is pressed against an inner peripheral surface of the first through-hole. Each of the second pipes includes a second expanded portion having an outer peripheral surface that is pressed against an inner peripheral surface of a corresponding one of the second through-holes.

Abstract: In at least some implementations, a torque transmitting apparatus includes a first member arranged for rotation about an axis and having a first surface oriented substantially perpendicular to the axis, and a second member having a second surface with at least a portion that is parallel to and engaged with at least a portion of the first surface. The second member is coupled to the first member by a weld provided in an interface region defined by an area of radial overlap between the first surface and the second surface. The groove is provided in one or both of the first surface and the second surface, the groove has a portion located radially inboard of the weld and at least one outlet that, at least without the weld, is communicated with a radially outer edge of the interface region.

Abstract: A method of forming a solder joint between a coaxial cable and a coaxial connector includes the steps of: positioning a solder element between an end of an outer conductor of the coaxial cable and a connector body of the connector, wherein the connector includes an insulator with a suction passage; lowering the connector body and insulator onto a mounting structure; melting the solder element to form a solder joint between the outer conductor and the connector body, the solder joint including a lower surface formed by contact with the insulator and/or the connector body; and applying suction to the melting solder element from a suction source to reduce the formation of bubbles within the solder joint, wherein a suction path between the suction source and the solder element includes the suction passage in the insulator.

Abstract: A method for welding tubes in a shell and tube heat exchanger, including forming ring-shaped tube sheet grooves on the tube sheet at the shell side, inserting tube joint members into the tube insertion holes of the tube sheet, producing ring wires by cutting a welding wire into pieces and bending the pieces into a ring shape, affixing the ring wire to the outer circumference of one end of the tube, inserting the end of the tube into the tube sheet such that the end of the tube contacts one end of the tube joint member and is located within the recessed distance range of the tube sheet groove, and performing shell side welding by inserting a welding torch into the tube joint member and welding the end of the tube joint member, the end of the tube and the joint part to the tube sheet at the shell side using the ring wire as filler metal.

Abstract: Welding systems including a hydraulically driven welding power supply adapted to utilize hydraulic primary power to generate a first welding output for a first welding operation and a second welding output for a second welding operation are provided. Such welding systems may include control circuitry coupled to the hydraulically driven welding power supply and adapted to enable the hydraulically driven welding power supply to provide the first welding output and the second welding output at the same time to enable a first welding operator and a second welding operator to perform the first welding operation and the second welding operation, respectively, at the same time.

Abstract: Nickel-base radiant tube includes straight and curved elbow tube sections. The straight tube section has constant inner and outer radii. The elbow tube section has a constant inner radius and variable outer radius. The inner diameter of the elbow tube section is equal the inner radius of the straight tube section. Mating end portion of the elbow tube section has an outer radius equal to the outer radius of the straight tube section. Method for making the radiant tube comprises the steps of positioning a mating end portion of the straight tube section adjacent to and aligned with the mating end portion of the elbow tube section so that end faces of the straight and elbow tube sections face each other to define a circumferentially extending weld groove, and butt welding the mating end portions of the straight and elbow tube sections together at the weld groove.

Abstract: The present invention relates to a method for replacing an inner disk element of a blade integrated disk wherein the blade integrated disk has a plurality of recesses in the form of axial through-bores in the joining area. The method begins with filling the axial through-bores, after which the inner disk element of the blade integrated disk is separated from the remaining blade ring. Next a new inner disk element is inserted into the remaining blade ring and the new inner disk element and the remaining blade ring are joined. Finally the axial through-bores are restored.

Abstract: A weld nut includes a main body and a flange. The flange is extended outwardly from the main body and surrounding the main body, and comprises teeth disposed evenly on the periphery thereof. Mis-positioning of the weld nut is avoided when soldering the weld nut to a printed circuit board.

Abstract: A method for connecting a tube and a cast component includes widening an end section of the tube to form a widened section, positioning the cast component adjacent to the widened section, and welding the cast component to enclose at least a portion of the widened section with a weld deposit in at least one step, thereby locking the tube and the cast component together. A connection between a tube and a cast component is also provided.

Abstract: A drop deck trailer frame includes a front section having a first upper surface, a rear section having a second upper surface lower than the first upper surface, and an improved connection between the front and rear sections which tends to reduce cracking which commonly occurs in drop deck trailer frames due to the stresses in the region of the connection. The connection preferably includes a semicircular weld. In addition, heat treated bent flanges are typically used to provide additional strength. Fasteners such as bolts are also typically used to connect various flanges.

Abstract: A method of forming a sputtering target assembly and the sputtering target assembly made therefrom are described. The method includes bonding a sputtering target to a backing plate at a low temperature. Also described is a method of forming a sputtering target assembly such that a gap is formed between the sputtering target and the backing plate. Also described is a method of forming a sputtering target assembly providing a mechanism to prevent unintended sputtering into the backing plate.

Abstract: A steel pipe is welded to a threaded connector that has an end with a desired nominal inner diameter. A swage is forced over an end of the pipe, reducing an outer diameter and an initial inner diameter of the end of the pipe. A die is then forced into the end of the pipe, the die having an outer diameter sized to increase the inner diameter of the end of the pipe to the nominal inner diameter of the end of the connector. A weld groove is machined on the end of the pipe and the ends are abutted and welded at the weld grooves.

Abstract: There is provided a process that includes providing an extruded fitting having a bore formed therein. The bore is machined from one or both sides of the extruded fitting to provide a ledge on one side for interacting with a corresponding fitting and a stop on the other. A pipe and braze sleeve are placed in combination into the bore and engage the stop. The pipe and bore include anti-rotation and location irregularities formed thereon to maintain a desired orientation of the parts. A mandrel is used to deform the pipe and sleeve to the shape of the bore. The parts are then brazed in a furnace.

Abstract: A chip component is manufactured through a step of burning a unburned unit element made of ceramics having prism-shaped parts at its ends, a step of polishing the edges of the burned unit element, and a step of forming a resistor conductor, an electrode conductor and a armor on the polished unit element.

Abstract: An improved drilling pipe for directional boring uses a frictionally welded threaded coupling attached to pipe ends for connecting multiple pipes in a drill string. A stress spreader of the end coupling crosses the frictionally welded region to modify stresses on the weld. A weld flash receiving groove positioned beneath the weld allows the insert to be in place during the inertial welding operation and to be closely coupled to the interior pipe surfaces to receive forces therefrom.

Abstract: A method for welding horizontal pipe along the inner diameter of the pipe and outer diameter of the pipe to prevent weld root defects on the bottom half of the pipe.

Abstract: An improved fluid fitting made from a portion of copper tubing has at least one annular cavity disposed in its inner periphery adjacent to each open end of the fitting. Solder is disposed in and substantially fills the at least one annular without extending beyond the inner periphery of the fitting. The fitting is fabricated by being placed in a die having a hollow with at least one annular depression. A first mandrel is placed into the fitting, with annular cavity forming ball members in substantial alignment with the at least annular depression of the hollow. The ball members are used to form the at least one annular cavity in the inner periphery of the fitting. A second mandrel has an aperture that substantially aligns with the at least one formed annular cavity and molten solder is injected into the at least one annular cavity through the second mandrel, to substantially fill the at least one annular cavity.

Abstract: An apparatus and method are provided for enhancing fatigue and load properties of subterranean well drill pipe immediate the area of securement of pipe sections by providing a weld in a discontinuous plane to secure pipe sections to each other, said weld having a greater cross section of welded surface and ability to distribute stresses which is less prone to fail due to rotational, tensile, and bending stresses, mid due to heavy loads and stresses arising from shock loading.

Abstract: A disc road wheel on which a tire is fitted. The disc road wheel has a disc formed with an outer peripheral annular flange section which is press-fitted to the inner peripheral section of a rim. The flange section is formed at its outer peripheral surface with a plurality of gas leak grooves which are aligned along a peripheral direction of the disc. Each gas leak groove is in communication with ambient air even upon press-fitting of the disc and the rim, so that gas between the disc and the rim can be discharged through the gas leak grooves during welding.

Abstract: In brazing a first metal piece having a tubular joint portion of predetermined length at an end thereof and a second metal piece having a bore for inserting the extremity of the joint portion thereinto by replaced brazing with the extremity of the joint portion inserted in the bore, a plurality of axial grooves having a depth of 0,3 to 1,5 mm and arranged at a spacing of 5 to 30 mm in the circumferential direction are formed in the outer peripheral surface of joint portion of the first metal piece. Each of the grooves has one end extending to the outside of the bore of the second metal piece when the joint portion is inserted in the bore. The gas or residue of flux produced during brazing escapes through the grooves, whereby voids or like defects are prevented from occurring in the fillet of the brazed joint. Since the grooves are all filled up with the brazing filler metal, the brazed joint is given a sufficient bond strength and prevented from permitting leakage there-through.

Abstract: The present invention is a brazed fitting suitable for use as a hydraulic coupling for pressurized fluids. A male component has a tapered surface which mates and creates an interface with a similarly tapered surface of a female component. A brazing material is heated to diffuse and alloy within the interface, forming a connection between the surface portions which is stronger than the metal being connected. A groove on the male component retains the brazing material in the middle of the surface portions so that after the components are joined in an interference fit, the assembly is heated and the brazing material melts in the middle of the interface and connects together the mating surfaces by diffusing and alloying. The counterbore of the female component does not require a base, and the resulting structure has improved fluid flow characteristics.

Abstract: An improved method for making a composite tube (10) to a carbon steel tube (16) joint or a composite tube (10) to a carbon steel header (50) joint is achieved by specially preparing the composite tube (10) by removing the cladding (12) from one end (24) to a predetermined length to provide base carbon steel material (14). The end (24) of the composite tube has cladding (12) tapered at a predetermined angle. This end (24) is then expanded. The composite tube (10) is then welded to the carbon steel tube (16) with fewer weld passes while also eliminating the stainless steel weld pass.

Abstract: A cutter assembly, for a rotary drill bit, comprises a stud to be received in a socket in the surface of the bit body, the stud being formed, adjacent one end, with a plane surface inclined to the longitudinal axis of the stud. A preform cutting element comprises a front surface, a peripheral edge surface, and a flat rear surface which is brazed to the surface on the stud, the peripheral edge surface of the cutting element being wholly exposed. The junction between the peripheral edge surface and the rear surface of the cutting element is chamfered. Any external fillet of brazing alloy is preferably removed or is not allowed to form during brazing, and the space between the chamfer and the surface of the stud may also be free of brazing alloy. Removal of the brazing fillet may also be advantageous in the case of a non-chamfered cutter.

Abstract: In the sealed feedthrough construction disclosed herein, a maximally compliant solder joint is provided between the low expansion ferrule of a glass insulted feedthrough connector and a bore in an enclosure bulkhead of a high expansion metal. The desired uniform radial thickness is established by providing a step on either the outer diameter of the ferrule or the inner diameter of the bore.

Abstract: A ceramic-metal lead assembly, of the type suitable for use in nerve or heart pacemakers, has a disk of high-purity ceramic with at least one lead extending therethrough, the disk being soldered vacuum-tight to a flange ring via a solder gap. The flange ring consists of a metal which is resistant to body electrolytes, and the coefficients of thermal expansion of the joined materials are matched to each other, but are not identical. For avoiding cracks in the ceramic disk in the region of the solder connection, the solder gap has a width such that the diffusion path of the metal of the flange ring into the solder connection cannot exceed a selected distance in the solder bridge which forms at the soldering temperature. A solder zone which is free of the metal of the flange ring, and thus has a dutility which is not degraded by the flange ring metal, is formed around the ceramic disk.

Abstract: A composite camshaft is formed by brazing a journal to a shaft. After a brazing material is fitted into an annular groove formed on the center of the inner peripheral surface of a shaft-receiving bore in the journal, the journal is fitted onto the shaft and the brazing material is heated until it melts. The molten brazing material consequently completely fills a clearance between the inner peripheral of the shaft-receiving bore in the journal and the outer peripheral surface of the shaft, ensuring that the journal and the shaft are firmly connected.

Abstract: A method of forming non-magnetic barriers in the coupling disc (e.g., the armature or rotor) of an electromagnetic coupling such as a clutch or brake. The method is carried out by moving the disc relative to a laser beam which cuts a slot through the disc. In one embodiment, the slot is filled throughout its entire length by non-magnetic material, the filling being effected by continuously advancing a non-magnetic wire toward the laser beam to cause the wire to be melted by the beam and to flow into the newly formed slot. In another embodiment, the wire is advanced intermittently to form short non-magnetic bridges beween relatively long slots.

Abstract: The outer conducting sleeve of a coaxial cable connector is soldered to a housing wall or metal plate, the sleeve being butt-mounted to the plate. The plate has a raised edge surrounding the opening, and a ring of solder is placed between the raised edge and the inner surface of the sleeve before the sleeve is butted against the plate, and the solder is subsequently melted. Indentations in the plate, under the end wall of the sleeve, permit solder to flow outward so as to wet the outer surface of the sleeve to form a continuous joint.

Abstract: A continuous and optimum weld is provided in the weld space between the attachment end of a secondary pipe and the outer surface of a primary pipe by means of a downwardly extending electric welding burner, the secondary pipe being oriented to extend at an angle to an imaginary central axis line extending through the primary pipe, by coordinating the vertical and horizontal positioning of the welding burner as the primary pipe is rotated, both around its imaginary central axis and end over end, so that the welding burner will be continuously aimed at the weld space and will operate at a constant current strength as the primary pipe rotates.

Abstract: In the formation of a crankshaft, such as used in small gasoline motors for lawn motors, chain saws and the like, separately produced crank webs, shaft pins and crank pins are used to form an integral crankshaft. Initially the various parts are shaped to the desired dimensions. The crank web can be stamped from a metal strip or it can be a forged sintered part. A shaft pin is inserted in sliding contact with an opening in a crank web and then the two parts are secured together by pressure welding. Another crank web and shaft pin are assembled in a similar manner. The two webs are then interconnected by a crankpin positioned in another opening in each of the webs and a connecting rod is installed on the crankpin.

Abstract: A welding structure for a disc wheel installed on a vehicle. The disc wheel comprises a rim and a disc, the disc having an outer peripheral portion fixed to an inner surface of the rim by welding. The edge surface of the outer peripheral portion of the disc is inclined with respect to the rim, and when assembled contains the end portion of the weld.

Abstract: This invention relates to an improved method of manufacturing injection molding manifolds for multicavity molding. The method includes gun drilling a longitudinal duct through a steel manifold body, drilling a transverse inlet duct to connect to an inlet on one surface of the manifold, and drilling diagonal outlet ducts to connect to spaced outlets on the opposite surface of the manifold. The outlet ducts are smaller in diameter than the longitudinal duct to match the rest of the system. Before the outlet ducts are drilled, end portions of the longitudinal duct are drilled out to a larger diameter and steel plugs having a tapered well are securely welded into them with the mouth of the well in alignment with the longitudinal duct. The plugs are larger in diameter than the central portion of the longitudinal duct to avoid the formation of thin knife edge portions where the outlet ducts join the longitudinal duct which often break down during use.

Abstract: The process steps for sealing a leak in rolled tube/tubeplate joints in heat exchange units comprise removing a portion of the tube end (2) and of the tube-plate (1) by a milling cut (6) and joining the surfaces thus formed by a weld seam (7) of preferably lens-shaped cross-section.

Abstract: Disk screen shaft assemblies have an array of concentric annular toothed disks mounted in axially spaced relation on and along shaft perimeters, with the inner diameters of the disks having bevelled edges welded to the shaft perimeters in a manner to confine the welding to the grooves defined by the bevelled edges with the shaft perimeters. Method and apparatus for mounting and welding the disks successively on the shaft perimeters attains accurate, warp free and effective mounting and welding of the disks to the shaft perimeters.

Abstract: A method of manufacturing a hub member (50) for use in a coaster brake (52). A supply of tubular stock material (8) is transported to a work station and the interior thereof machined to establish first and second diameters (16) and (17), respectively, separated by a shoulder (15). A cylindrical member (10) is cut from the stock (8) and placed in a fixture (36). A disc or ring member (30) has a peripheral surface with a serrated section (32) separated from a shoulder (33) by a groove (35). The disc or ring member (30) is placed on a second fixture (38) and brought into alignment with diameter (16) of the cylindrical member (10). A ring of brazing material (37) is placed in groove (35). A force is applied to move disc member (30) into the diameter (16) of the cylindrical member (10). The serrated surface (32) on disc or ring member (30 ) engages diameter (17) to distort material therein and establish a mechanical joint (44).

Abstract: A technique for securing a tube to a flange includes the steps of inserting the end of the tube into an aperture provided on the flange from the first side of the flange such that a portion of the tube extends at least to, and preferably beyond the second side of the flange opposite the first side. A ceramic plug is optionally inserted into the end of the tube to prevent weld spatter and tube burn-through. The tube is then welded to the flange about the circumference of the tube from the second side of the flange, and that portion of the tube which extends beyond the second side of the flange is removed by grinding to produce the finished product.

Abstract: A method of making a workpiece holding device having an expandable mandrel including the step of melting copper ring seals around the bore next to the ends of the expandable mandrel to maintain the mandrel rigidly in place. The holding device includes an expandable sleeve of generally cylindrical shape having a thin outer shell with a pair of opposed thick wall circular ends integral with the shell extending radially inward to form a bore. An elongated generally circular central body with a central bore for containing pressure and adapted to be mounted on a machine tool having an outside diameter engageable with the bore. A pair of opposed arcuate undercut grooves are formed at an intersection of the outer shell and the circular ends to prevent the formation of destructive stress concentration at the intersection. Chamfers are formed at the outer edges of the bore and copper rings are inserted therein and melted to form a seal between the bore and mount the expandable sleeve to the central body.

Abstract: In the manufacture of rotating anodes for X-ray tubes consisting of a basic body made of high-melting metal or its alloys and one or a plurality of graphite parts, the graphite parts (3) are provided with grooves (5) and boreholes (6) before the individual parts are joined by soldering. The grooves (5) mainly having a semicircular cross section are provided in the surface (4) of the graphite parts (3) to be joined by soldering. The boreholes (6) extend through the graphite parts (3) and feed into the grooves (5) approximately vertical to the graphite surface (4). Excessive solder and gases formed during soldering may flow or escape by way of the grooves and boreholes, which produces an improved soldered joint with increased adhesive or bonding strength between the basic body and the graphite parts.

Abstract: A method of hermetically sealing by NVFE (non-vacuum focused energy) welding abutment joints formed by elongate surfaces. At substantially spaced intervals narrow shallow vent grooves are formed across one of the surfaces, while leaving between the vent grooves separating lengths of many times the length of the groove width. The grooves enable the NVFE welding to be effected continuously in unidirectional pass along the joint, the gases venting from the joint through the successive vent grooves as the welding progresses continuously along the joint. Continuously after the venting of the gases at each of the successive vent grooves, each vent groove is sealed by the NVFE welding without interrupting the welding progression.

Abstract: An improved basket assembly and method of making same of the type designed for use in a sugar centrifuge that includes an annular mounting flange containing an upwardly-flared frustoconical seat and an open-bottomed conical element adapted to mate in assembled relation with the aforementioned frustoconical flange seat. The apparatus is characterized by shaping the opposed surfaces at the lower end of the cone and base of the seat so as to cooperate with one another in assembled relation to define an upwardly-opening and inwardly-flared continuous annular groove for the reception of a weld. The apparatus also includes a circumferentially-spaced series of apertures in the wall of the cone opening onto the conical surface of the seat when assembled to receive a corresponding number of plug welds.

Abstract: A pin designed to be attached to a solid state module for making connection between the module and other parts of a metallurgical system. The end of the pin that is to be brazed to the module has a sloping (e.g., conical or wedge) shaped head so that gas bubbles can readily escape during brazing, thus reducing voids in the braze.

Abstract: The specification discloses a method and apparatus for assuring the integrity of outside weldings of pipelines. Pipe sections are prepared for welding by forming a beveled profile with a relatively narrow annular contact band on the ends of each pipe section. When the pipe sections are abutted end to end for welding, the leveled profiles form a relatively deep groove on the outside of the pipe between the pipe sections, with the annular contact bands abutting and spaced inwardly from the grooves. The contact band on at least one of the pipe sections is circumferentially prepared such as by knurling to provide controlled spacing between the contact bands of the pipe sections. A welding arc is applied to the bottom of the groove from the exterior of the pipe sections to weld the annular contact bands together. Welding penetration is enhanced by the circumferential preparation of the contact bands.

Abstract: A groove is provided on the side of a metallic structure opposite to the side thereof which is exposed to a corrosive atmosphere, and the groove is subjected to build-up welding while cooling with a liquid coolant, whereby any stress corrosion cracking which otherwise occurs on the side of the structure to be exposed to the corrosive atmosphere can be prevented. Especially, this method of manufacture is appropriate for the repair welding of a butt-welded pipe of austenite type stainless steel, and it is effective to perfectly prevent the stress corrosion cracking of the pipe prone to be caused by reactor water during use in a nuclear reactor.

Abstract: A cylindrical branch connection fitting has an end adapted to be welded to a main pipe adjacent an opening therein with a pair of opposed ears and a pair of opposed crotches and a weld bevel extending outwardly from the inner edge of said end. A transition bevel extends from the center of each ear towards the centers of the crotches.

Abstract: A TIG pipe welding method which employs two sets of machine guide surfaces on the pipe ends. First radially inner guide surfaces cooperate with a sensor coupled to the welding torch to continuously monitor the arc gap between the welding electrode and the weld puddle as the welding electrode moves around the circumference of the pipe. The second set of radially outer surfaces cooperate with a welding carriage to guide the carriage and welding modules around the pipe joint. The carriage is constructed to provide a sealed welding chamber surrounding the electrode. An additional flow of shielding gas is provided around the torch electrode of a TIG or hot wire TIG welding module to augment the normal gas shield.

Abstract: A pipeline consisting of lengths of steel pipe welded together in end-to-end relation is made by first weld-plating the internal surface of the end portions of each individual pipe length with a corrosion-resistant material. A protective layer is then applied to the internal surface of each pipe length between the weld-plated end portions, the latter having first been smoothed down by machining to the desired finished thickness of the protective layer. The pipe lengths are then welded together in end-to-end relation. The welding operation consists of first depositing a root bead encircling the pipe at the junction of the ends of the weld-plated material. Weld material is then deposited in and fills out the gap between bevelled edges of the pipe ends to substantially the outside diameter of the pipe.

Abstract: An improved side pocket mandrel having a body comprising a one-piece main body section in which a main bore and a receptacle bore extend longitudinally therein and an upper body section having space therein for operating a kickover tool, welded together with a circumferential weld. In another embodiment, the machined main body section is welded by circumferential welds between upper and lower body sections. Additional embodiments are further disclosed having means therein for orienting kickover tools which are run and manipulated by wire line or pump down techniques and also having deflectors therein for deflecting regular well tools back into the main passage when approaching the receptacle from above and yet guiding flow control devices into the receptacle when such device is moved laterally into alignment with the receptacle by a kickover tool. Some disclosed embodiments have check valve means controlling flow between the exterior and the interior thereof.

Abstract: A method for metered dispensing of a medium from a container, a dosing pipette (P1P2) for removing an exactly predetermined amount of the medium to be inserted into the container, wherein the predetermined amount is adjusted on the dosing pipette (P1P2) prior to removal.