Abstract: According to some embodiments, there is provided a welding device for welding outer peripheral edges of two irregular shaped plates which are overlapped, including: a rotary table to which the two irregular shaped plates in an overlapped state are fixed; a torch unit, including a welding torch positioned to face the outer peripheral edges of the two irregular shaped plates fixed to the rotary table; a first torch actuator, capable of changing an orientation and a distance of the welding torch relative to the outer peripheral edges; and a first controller, configured to control the first torch actuator, so that the orientation of the welding torch relative to a tangential line of the outer peripheral edges and the distance of the welding torch from the outer peripheral edges are kept constant along a circumferential direction of the outer peripheral edges, during rotation of the two irregular shaped plates.

Abstract: A pipe fabrication apparatus includes a fabrication module having a guide adapted to support a cylindrical component, at or adjacent a first end of the component, at two discrete and space apart locations on an exterior surface of the component, and a bed for supporting the cylindrical component at a position distal the first end such that a longitudinal axis of the component is aligned with a central axis of the fabrication module in order to allow additional cylindrical parts to be quickly and easily coaxially aligned with the component for the purposes of tack welding the two items together prior to full seam welding.

Abstract: Welding assistance systems to rotate a piping system component for welding purposes. The welding assistance systems hereof permit pivoting of the item to be welded, leveling of the item to be welded, and electrical conduction prevention to protect items connected with the welding assistance system hereof.

Abstract: Support device (20) meant to bear in supporting fashion on one or more work pieces in connection with friction stir welding, comprising: A holder unit (30), a first support wheel (40) which can be rotated relative to the holder unit about a first rotational axis (R1), and a second support wheel (50) which can be rotated relative to the holder unit around a second rotational axis (R2) which is parallel to the said first rotational axis, a support body (60) connected with the holder unit which is situated between support wheels and exhibits a support surface (61) turned outward, and an endless flexible metal belt (21), which runs in a loop over the outer peripheral surfaces (41, 51) of the support wheels, and is in sliding contact with the support surface of the support device, wherein the support devices are shaped to provide support as they bear on one or more work pieces with the outer peripheral surfaces of the support wheel, and with the support surface of the support body resting against the work piece

Abstract: A wheel resurfacing method and system for resurfacing a worn track wheel to its original profile are disclosed. The system comprises a support for maintaining the worn railway wheel, a welding device, a controller, and a surface processing device. The worn railway wheel's circumferential surface defining a flange and a tread surface is reconstituted using a welding material. The welding device and the worn railway wheel rotate one relative to the other at a predetermined rate to adaptively aggregate annular welding beads along the circumferential surface to form a curvilinear profile slanted away from the flange. A surface processing device is then applied to the welded layer to form a substantially uniform surface to reconstitute the worn railway wheel to its original profile.

Abstract: An apparatus for manufacturing structures having a continuous sidewall includes a stationary inner work station having at least one working level and a stationary outer work station having at least one working level. The outer work station surrounds the inner work station. A shaft is disposed between the inner work station and the outer work. A lift or hoist is provided for raising and lowering a work piece in the shaft as work progresses.

Abstract: Processes and methods related to processing and hot working alloy ingots are disclosed. A metallic material layer is deposited onto at least a region of a surface of an alloy ingot before hot working the alloy ingot. The processes and methods are characterized by a reduction in the incidence of surface cracking of the alloy ingot during hot working.

Abstract: The present invention relates to a method for manufacturing a screen and welding apparatus thereof, putting a metal filter net around the outside of a support sheath and fixing the metal filter net to the outside of the support sheath by way of welding, such that the metal filter net completely covers all filter holes of the support sheath to form a filter sheath with; fixing the filter sheath to the outside of the base pipe and the filter sheath completely covering all penetrated holes on the base pipe; putting a jacket around the outside of the filter sheath and fixing it to the outside of the base pipe such that the jacket completely covers the outside surface of the filter area of the filter sheath.

Abstract: A purge gas introduction system for an orbital tube welding setup is provided, configured to inject high purity inert purge gas to the interior volume of a tube or tubular component. An o-ring is interposed between an annular base and an annular ring, their junction forming an annular o-ring groove, each part forming one sidewall, with the o-ring fully recessed within the groove, protecting the o-ring during the insertion and removal of a tube. The annular base and an annular ring are configured to receive a tube terminus. The sidewalls of the o-ring groove are divergent one to the other, wherein as the annular ring is drawn towards the annular base, the o-ring is forced partially out of the groove, forming a substantially leak tight seal between the tube and the o-ring. A purge gas from an external source is transmitted to the annular base through a purge connector, then, in turn, introduced to the interior volume of the tube.

Abstract: Methods and associated systems for welding a particle-matrix composite body to another body are disclosed. In some embodiments, a particle-matrix bit body may be welded to a metal coupler. In one embodiment, a heating torch may heat a first localized volume of the particle-matrix composite body to a temperature below the melting temperature of the matrix material of the particle-matrix composite body. A welding torch may simultaneously melt a second localized volume proximate the first localized volume to a temperature above the melting temperature of the matrix material of the particle-matrix composite body to weld the particle-matrix composite body to another body.

Abstract: An automatic packaging method of optical elements includes a focusing platform set, a Z-axis feeder set and an automatic feeding set. The Z-axis feeder set is provided above the focusing platform set. An automatic feeding set is arranged on a horizontal plane between the Z-axis feeder set and the focusing platform set by an appropriate distance. An upper part and a lower part of an optical element are supported by the lower end of the Z-axis feeder set and the upper end of the focusing platform set, respectively. The lower end of the Z-axis feeder set is adjusted vertically and horizontally with respect to the focusing platform set such that the upper part and the lower part are arranged in a line and coincide with each other. Afterward, by using the automatic feeding set, the upper part and the lower part of the optical element are bound together via the solders.

Abstract: An apparatus is disclosed for performing high speed welding of two or more materials. The apparatus includes an outer vessel having an inner surface and a central axis. At least one inner vessel is positioned within the outer vessel and adapted to receive at least two materials to be subjected to a bonding or welding process. A drive system causes the inner vessel to rotate with respect to the outer vessel. The apparatus is designed to inhibit the formation of an oxidation layer on the materials during rotation. In one embodiment, the oxidation layer is inhibited by creating a vacuum within the inner vessel. In another embodiment, the inner vessel is filled with a gas which inhibits formation of an oxide layer on the materials. A method for high speed welding is also disclosed.

Abstract: A multifunctional weld fixture is provided having a base receiving a component and a plurality of locator tabs disposed around its outer edge. A circumferential array of expansion feet are movably attached to the top surface of the base. A disk-shaped wedge is disposed in sliding engagement with the expansion feet. A cover supports a portion of the component and seals against the component to create an enclosed plenum. The same fixture may be used to expand the component to compensate for shrinkage after the weld is compete.

Abstract: Friction Pull Plug Welding is a solid state repair process for defects up to one inch in length, only requiring single sided tooling, or outside skin line (OSL), for preferred usage on flight hardware. The most prevalent defect associated with Friction Pull Plug Welding (FPPW) was a top side or inside skin line (ISL) lack of bonding. Bonding was not achieved at this location due to the reduction in both frictional heat and welding pressure between the plug and plate at the end of the weld. Thus, in order to eliminate the weld defects and increase the plug strength at the plug ‘top’ a small ‘hat’ section is added to the pull plug for added frictional heating and pressure.

Abstract: On a setting cart which is movable back and forth between a setting station and a vehicle body assembly station, there are provided floor panel setting members, side sill receiving members and side panel forcing members which force side panels toward a floor panel from a lateral outward. In the setting station, the floor panel and the side panels which are set in position on the setting cart are transferred to a jig which is disposed in a side portion of the vehicle body assembly station. The side panels are welded to the floor panel by welding robots which are disposed at a level below the jig. In the above-described arrangement, the side sill receiving members and the side panel forcing members are set on the setting cart so as to be retractable into shunted positions free from interference with the welding robots in welding operation. The welding work by the welding robots can thus be started without waiting for the returning of the setting cart to the setting station.

Abstract: A friction agitation joining apparatus for joining a plurality of abutted members includes rotatable chucking portions for chucking opposite ends of the abutted members while axially pressing the members, a supporting roller for supporting the members, a driving motor for rotating the abutted members about an axis thereof, and a joining device having a rotatable probe disposed adjacent to an abutted portion of the abutted members. The probe softens and agitates the abutted portion of the abutted members to join them in accordance with a rotation thereof.

Abstract: A portable boring-welding machine, in which the rotation of the tool shaft or the torch shaft and, respectively, the axial movement of the tool shaft or torch shaft in both directions are driven by a combination of only two independent motors, which can be activated from the machine control unit. The motors are housed in a box which is integral with the machine structure and has a machine carry-handle. At least the motor which drives the rotation of the tool and torch shafts is of the direct current type and is subject to the action of means which adjust its speed and operating stroke, said means being positioned, respectively, on the control unit control panel and at end of stroke means, intercepted by actuators which follow the axial movement of the tool and torch shafts.

Abstract: The boring machine according to the present invention , that may be applied onto the piece to be bored and suitable for performing welding surfacing on the same point to be bored, inside or outside, with working performed in automatic or semi-automatic, comprises:a tubular box inside which a shaft may be inserted, guided by an engine bushing that allows the rotation and the longitudinal moving of a tool head-carrying shaft,a manual supporting handle for transport;three motoreducers, fed with direct current and installed inside said bonnet;three engines, for the rotation of the head-carrying tool shaft, for the forward and backward advancement of the head-carrying tool shaft in the boring phase, and for the welding surfacing distribution phase of eventual pieces to be re-treated, allowing the rotation of the torch by continuous wire welding at very low revolutions that may be electronically varied;a screw placed on the tool-carrying head, for the manual advancement of the tool;a device for the rotating connect

Abstract: An exemplary method for welding a circular disk coaxially atop a tubular body comprises the steps of rotating the body and disk thereon, drawing a vacuum inside the body for vacuum holding the disk thereon, and welding the disk along a rim thereof to the body to sealingly join the disk thereto.

Abstract: A method of coating an interior surface of a metal tube with a coating material including the steps of filling the tube with a fluid degradable transport material containing a dispersion of the coating material, rotating the tube, and induction heating the tube to a fusion point of the coating material.

Abstract: A method of coating an interior surface of a metal tube with a coating material including the steps of filling the tube with a fluid degradable transport material containing a dispersion of the coating material, rotating the tube, and induction heating the tube to a fusion point of the coating material.

Abstract: An apparatus for providing inert gas to a desired location for a welding operation is provided. The apparatus includes a gas feed line and structure for mounting the feed line to extend in a first direction in a pipe. A gas locator tube communicates with the gas feed line to direct inert gas from the gas feed line in a second direction, different from the first direction, towards a pipe joint to be welded. The locator tube is capable of continually directing inert gas in the second direction as the pipe is rotated during a welding operation.

Abstract: An improved vehicle wheel welding station which minimizes the stoppages of the welding station to replace the contact tip and/or welding wire conduit includes an wheel support fixture for supporting a vehicle wheel and at least three welding torches supported relative to the wheel support fixture. Each of the welding torches is movable with respect to the fixture in a generally radial direction between a retracted non-working position and an extended working position. Each of the welding torches including a generally straight body defining an upper end portion and an opposite lower end portion. The upper end portion of each torch is operatively connected to a conduit assembly adapted to contain and feed a weld wire into the body, and the lower end portion is operatively connected to a nozzle assembly adapted to produce a weld along a selected arcuate portion of a wheel assembly.

Abstract: A precision alignment apparatus that automatically welds together the parts of a cut-apart torque converter. A precision cast and machined frame is provided onto which are mounted a spindle assembly, a double-end air cylinder and a turntable which are aligned within a close tolerance along a longitudinal axis. The spindle assembly grabs and aligns the upper half of the torque converter. The double-end air cylinder moves the spindle assembly along the longitudinal axis and provides for the longitudinal alignment of the torque converter parts. The turntable supports and aligns the lower torque converter half. The apparatus provides for automatic welding of the first part to the second part while alignment is maintained by the spindle assembly and the turntable. During welding the turntable and the spindle assembly rotate about the longitudinal axis to move the torque converter past the stationary welding device.

Abstract: This disclosure is directed to a method of and apparatus for applying a weld bead upon a surface of a chilled white iron product by (a) moving a surface of the product along a predetermined path of travel in a desired direction, (b) directing a stream of air upstream of a weld point against the surface which is to be welded, (c) forming a continuous weld bead downstream of the stream of air, (d) directing a stream of water at a portion of the formed weld bead located downstream of the weld point, and (e) immersing the weld bead essentially immediately upon its formation.

Abstract: This invention relates to a method and device for joining well tubulars by a friction welding technique. The device includes apparatus for fixing tubular elements in a substantially vertical and aligned position near the wellhead and apparatus for rotating a welding ring relative to the tubular elements. According to the method a first tubular element is lowered partly into the well, positioning a welding ring positioned on top of this element hoisted to a substantially vertical position above the welding ring and the welding ring rotated relative to the tubular elements while the welding ring is deformed in a radial direction such that sufficient frictional heat is generated to create a friction weld between the welding ring and the tubular elements.

Abstract: Conventional apparatus for forming pressure vessels from tubing involves a separate step of the forming of the tubing into coils and then separately welding the coils together. The conventional method has proven to be costly because of the type of apparatus required as well as time consuming and frequently producing a poor quality product when the welding is done independent of coiling step. The subject apparatus overcomes these problems by providing a collapsible mandrel to which tubing is wrapped to form coils for a pressure vessel and simultaneously welding the coils together in one step. The coils are guided on the mandrel by a carriage means which is controlled by a hydraulic system to maintain the coils into intimate contact with each other as they are being welded together. A welding torch, also carried by the carriage, is guided by the forming of the coils rather than some guide means to guide the welder independently of this operation.

Abstract: A rotatable welding fixture for supporting elongated structures such as tubes while performing metal welding operations on the tubes. The fixture includes an elongated central rigid frame which is rigidly attached at each end to an end plate and a trunnion aligned with the longitudinal axis of the frame. The central frame can be conveniently formed by a plurality of adjacent tubes each having a rectangular cross-sectional shape. A plurality of elongated structures such as tubes to be metal clad welded are supportably attached to the outer longitudinal surfaces of the fixture. The tubes being welded can be advantageously cooled during welding by passing a fluid such as water through the tubes. The invention also provides a method for metal clad welding the elongated structures while being rigidly supported by the rotatable welding fixture.

Abstract: In a process for welding a pipe string driven horizontally into the ground to a follower pipe, the pipe string buried in the ground and the follower pipe are rotated. A welder then does not need to make vertical welds but can form the weld seams in a position that is most comfortable for him.

Abstract: An apparatus is disclosed for automatically welding sheet metal panels to form part of a revolving drum for concrete transit mixers. The apparatus includes a fixture having an annular central core, linear and generally longitudinal ribs extended away from the core, and circumferential ribs extended radially outwardly of the core. The ribs intersect to define compartments in the fixture which are closed when the sheet metal panels are placed on the fixture. The compartments are then evacuated, creating a pressure differential to fix the panels on the fixture. A welding carriage is slidably supported on a rail above the fixture. The fixture can be tilted to selectively align panels along the rail for welding linear seams. Circumferential seams are welded by rotation of the fixture while the carriage is held stationary. To more positively maintain the panels in place during welding, compartments along the interfacing edges of adjacent panels are subjected to a higher vacuum.

Abstract: Described herein is a slag removing apparatus suitable for use on a padi-welding machine, which permits automation of the pad-welding operation and which essentially includes: a C-shaped roller holder located beneath a movable welding torch and provided with a rotational drive mechanism for a roller to be padded; a pair of extension arms horizontally extended on the open side of the roller holder and fixed in vertically adjustable positions; a guide rail support member provided with a rack and bridged between the extension arms in parallel relation with the rotational axis of the roller drive mechanism and detachably at least at one end thereof; a carriage having on a rockable plate a drive motor and a pinion disengageably meshed with the rack and movable along the support member; an inclined mount plate provided on the carriage with a predetermined angle of inclination; and a vibrational beating mechanism holding at least one needle bundle with the fore end thereof in face-to-face relation with the welding s

Abstract: The invention relates to an apparatus for automatic or remotely operated welding of the cover and/or the bottom of the walls of a container for receiving and storing radioactive fuel elements and wastes in a hot cell by employing the narrow joint welding technique, comprising at least one sensor sensing the course of the weld line between the container wall and the container cover and/or bottom effective to assist at least one three-dimensionally movable welding head controlled by control means utilizing signals supplied by the sensor to guide it along the joint for producing a continuous welding seam consisting of a plurality of super-imposed and offset weld beads or passes, respectively.

Abstract: A friction welding machine, for welding two members such as universal joint parts to the ends of a central component such as a tubular shaft, wherein rotatable holders (20) for the members are connected to a layshift (22) which is arranged to be driven and braked at a generally central position. The arrangement facilitates rapid braking necessary for establishing welds between aluminum alloy parts.

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: Apparatus useful in the manufacture and repair of automotive drive shafts which includes a frame and an elongate support bed rotatably mounting a multiple jaw chuck for rotary movement, a generally cylindrical workpiece passage extending through the chuck and its bearings and a pedestal remote from the frame and mounting an additional workpiece support axially aligned with the chuck. Stringers rigidly connect the remote workpiece support to the frame and a plurality of devices are mounted and movable relative to the support bed for selectively effecting operations on one end of a tubular workpiece supported by the multiple jaw chuck with the other end of said tubular workpiece supported by the remote workpiece support mounted to the pedestal.

Abstract: The apparatus for the build-up welding of a hollow articles uses at least two rollers for supporting the hollow parent member during application of the build-up welding. The rollers ride on a raceway formed on the hollow parent member.Where the raceway is also formed of built-up welding, the rollers are provided in pairs with each roller being alternatingly relieved of load to permit build-up of the raceway.

Abstract: An automatic welding apparatus for forming a circular bead along a circumference of a first workpiece at its junction with a second workpiece in order to weld the former to the latter, comprising a turntable, clamp members for clamping the second workpiece to the turntable, a torch holder for holding a welding torch in an adjusted position, a torch positioner which is engageable with the first workpiece, for maintaining a constant relative positional relationship between the welding torch and the first workpiece, a positioner guide mechanism for supporting and guiding the torch positioner to a desired position in a plane extending in parallel relationship with respect to a surface plane of the turntable, and the torch holder being restricted from rotating.

Abstract: A method and apparatus for assembling a structure of rolling stock or other vehicles. The method includes: supporting the structure with a long box through fastening devices to a framework on the side of the structure, rotating the structure around an axis passing closely through the center of gravity of the structure and the long box, and bringing the structure to a halt in an arbitrary position to perform various assembly operations. The apparatus includes: a structure retaining system having a long box which supports the structure lengthwise; cylindrical shafts attached at both ends of the long box and passing through the center of gravity of the structure and the long box; rotational drive devices each having a drive mechanism for driving cylindrical rollers which support the cylindrical shafts on the retaining system; and a pedestal supporting the entire system.

Abstract: The invention comprises a method and an apparatus for the manufacture of cylindrical hollow bodies by the shape welding process. This apparatus comprises a connection between a rotatably mounted supporting body which can be driven and a base body onto which the weld material is deposited. This connection is effected by elastically deformable elements and is capable of changing in the radial direction. Metal profiles which can be deformed elastically are fastened, in a manner permitting detachment, to the periphery of the supporting body, spaced at regular intervals. The base body is composed of a metal sheet or strip which is wrapped around the profiles and attached to them in a manner permitting detachment. Preferably the profiles extend over the length of the supporting body. The deformable metal profiles may be designed as cylindrical tubes, without any discontinuities or as half-tubes, angle-profiles, Z-profiles, or corrugated-sheet profiles.

Abstract: A machine for automatically applying one or more bonding or sealing seams to the peripheral surface of a tank or vessel having a non-cylindrical cross section. More specifically the machine provides means for supporting and axially rotating a generally rectangular vessel having planar walls and connecting arcuate corners so that all of the peripheral surfaces of the vessel move under the sealing or bonding means at a constant rate of speed and at a fixed distance therefrom. The same is achieved by the use of gripper assemblies having a configuration corresponding to that of the vessel. Each gripper assembly includes a sprocket chain which corresponds to the configuration of the vessel. A sprocket wheel engages each chain to rotate the gripper assemblies and the vessel retained therebetween.

Abstract: A method for axially aligning adjacent opposing faces of a first and second shaft segment having a respective joint face, of a steam turbine rotor to be welded together includes mating the joint faces of each shaft segment, placing a crushable lip, which axially extends from one of the joint faces, under an axially compressive force, and supporting the joined shaft segments at their axially outboard ends. An apparatus for axially aligning opposing end faces of a first and second shaft segment to be welded together, the first and second shaft segments including a respective joint face, comprises an adjustable support for raising and lowering the joined shaft segments thereby changing the axial distance across the annular groove defined by adjacent opposing end faces to be welded. Means for measuring the force at the adjustable support, provides an indication of the weight counteracted by the support when optimum axial alignment of the shaft segments is achieved.

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 device for overlay-welding a pipe interior having an arm extensible into the interior of a respective pipe, the arm carrying a welding head at a free end thereof includes a rotating device in the form of a wheel surrounding and supporting the pipe, and a swiveling device disposed in the wheel for moving the pipe in a circular arc about the center of the wheel and transversely to the plane of the wheel, the arm being curved and being secured to a part of the swiveling device connected to the wheel, the welding head being rotatable in the plane of the wheel for overlay-welding pipes formed at least partly with a bend therein.

Abstract: The automatic welding machine has a pair of closely spaced magnetic rollers which grip the surface of a workpiece and which are driven to rotate the workpiece. The workpiece may rest on a support on the end of a double articulated arm. The driven rollers are adjustably mounted on a standard. The standard also mounts a carriage including a welding gun. The carriage is movable toward and away from the workpiece under the urgings of a probe which is mounted on the carriage with the gun and which travels over the surface of the workpiece as it rotates.

Abstract: A conduit weld positioner for positioning two conduit portions extending at an angle to each other in which one of the conduit portions is grasped by a frame tiltably mounted relative to a turntable adapted to rotate about a central axis. The degree of tilting is adjustable in proportion to the angular relationship between the two conduit portions.

Abstract: A novel and improved fillet welding equipment is disclosed which comprises a movable member adapted to be movable longitudinally of the welding equipment, a threaded shaft inclined forwardly and mounted to the movable member, a welding torch threadedly connected with the threaded shaft to be movable upwardly or downwardly in a direction of inclination of said threaded shaft, and a jig positioned in front of the welding torch to carry members to be welded and adapted to be rotatable longitudinally of the welding equipment, whereby the whole periphery of the pipe member to be welded can be completely welded by a single welding torch.

Abstract: An automated loading system for nuclear reactor fuel elements utilizes a gravity feed conveyor which permits individual fuel pins to roll along a constrained path perpendicular to their respective lengths. The individual lengths of fuel cladding are directed onto movable transports, where they are aligned coaxially with the axes of associated handling equipment at appropriate production stations. Each fuel pin can be reciprocated axially and/or rotated about its axis as required during handling steps. The fuel pins are inserted as a batch prior to welding of end caps by one of two disclosed welding systems.

Abstract: An apparatus for mutually aligning and rotatably supporting similarly shaped facing circumferential surfaces of at least two members, e.g., for producing a circumferential weld, has an endless belt, which can be placed and secured around the adjoining circumferential surfaces. The belt is longitudinally flexible but axially stiff. The radially acting tension of the belt aligns the members. A loop gap formed between two belt guide rollers allows welding in the tensioned state. The tension is obtained by a tension roller acting in the belt loop and a drive engaging in said belt makes it possible to rotate the members in the tensioned state.

Abstract: Apparatus for applying a vacuum to a nuclear fuel rod cladding tube's interior through its open end while girth welding an inserted end plug to its other end. An airtight housing has an orifice with a seal which can hermetically engage the tube's open end. A vacuum hose has one end connected to the housing and the other end connected to a vacuum pump. A mechanized device moves the housing to engage or disengage its seal with the tube's open end. Preferably the mechanized device includes an arm having one end attached to the housing and the other end pivotally attached to a movable table; an arm rotating device to coaxially align the housing's orifice with the welding-positioned tube; and a table moving device to engage the seal of the coaxially aligned orifice with the tube's open end.

Abstract: The disclosure relates to an apparatus for the manufacture of hollow cylindrical bodies by deposit welding, consisting of a supporting body rotatably mounted on bearings at both ends and a hollow cylindrical basic body concentric to the supporting body being supported by said supporting body means of circumferentially arranged radially spacing members. According to the disclosure the spacing members are elastically flexible.