Abstract: A diaphragm and a first tubular member are combined into a one-piece transducer diaphragm element by electron beam welding. The first tubular member is formed as a first heat sink contacting one major surface of the diaphragm. A second tubular member is provided as a second heat sink in contact with the opposite major surface of the diaphragm. The diaphragm is sandwiched between the first and second tubular members into a composite structure laterally delimited by the peripheries of the diaphragm and the first and second tubular members. Ends of the first and second tubular members and a peripheral portion of the diaphragm are welded with an electron beam into a fillet-type welding joint monolitically unifying the diaphragm and first and second tubular members. Heat is axially removed from the diaphragm through the mentioned first and second heat sinks during the electron beam welding.

Abstract: A system is provided for welding a workpiece (10, FIG. 1) along a predetermined weld line (12) that may be of irregular shape, which includes the step of forming a lip (32) on the workpiece to extend parallel to the weld line, and moving the workpiece by engaging the lip between a pair of rotatable members (34, 36). Rotation of one of the members at a constant speed, causes the workpiece to move so that all points on the weld line sequentially pass a fixed point in space (17) at a constant speed, so that a laser welding beam can be directed at that fixed point to form a weld along the weld line. The workpiece can include a reuseable jig (24) forming the lip, and with the jig constructed to detachably hold parts (22, 20) to be welded at a position wherein the weld line of the parts extends parallel to the lip on the jig.

Abstract: A resistance welding machine for progressively welding each of a succession of transverse wires to longitudinal wires at a transverse welding station to and through which the longitudinal wires are incrementally advanced, the machine having a welding unit including a carriage mounted above the welding station for intermittent and reversible movement transversely of the machine and longitudinally of the welding station, a transformer vertically reciprocable in the carriage by a power unit mounted thereabove on the carriage, and a ram suspended from the transformer for movement in unison therewith and mounting for limited relative vertical movement a welding head carrying a front welding electrode, and a vertically movable guide bar and stationary platen, both electrically conductive and mounted independently of the welding unit, the guide bar below the ram and in advance of the welding station for guiding the longitudinal wires thereto and the platen underlying and supporting the longitudinal wires below both

Abstract: A method and an apparatus for welding an impeller by using TIG process are provided in which one of the blades to be welded to a side plate or shroud plate is disposed so as to form a V-channel with the plate, the V-channel being oriented to face upwardly, and a torch head supported at the tip of a torch rod is placed above a weld line produced by the intersection of the blade and the plate so as to contact the inner surface of the V-channel keeping a proper distance between the tip of the tungsten electrode encased within the torch head and the weld line on which a filler wire of suitable length is disposed.

Abstract: A method is provided for welding an edge surface of a curved metal brake shoe web to a metal brake shoe table. The brake shoe table surface has a greater radius of curvature than the brake shoe web prior to welding. The method consists of the steps of positioning the brake shoe table in longitudinal alignment with the brake shoe web with one end portion of the table surface abutting the brake shoe web surface over a predetermined distance and with the table surface diverging away from the brake shoe web edge to form a vertex where the surfaces abut. The abutting surfaces of the brake shoe web and the brake table are then pressed together at the vertex. The diverging surfaces of the brake shoe web and the brake table are contacted by separate electrodes. The high frequency alternating potential is then provided to each of the electrodes contacting the table and the web to induce a current to flow therebetween and thereby heat the interfacing surfaces in the area of the vertex.

Abstract: The present invention is directed to an apparatus for automatically maintaining a shrinking weld joint in alignment with an electron beam during an electron-beam multipass-welding operation. The apparatus utilizes a biasing device for continually urging a workpiece-supporting face plate away from a carriage mounted base that rotatably supports the face plate. The extent of displacement of the face plate away from the base is indicative of the shrinkage occuring in the weld joint area. This displacement is measured and is used to move the base on the carriage a distance equal to one-half the displacement for aligning the weld joint with the electron beam during each welding pass.

Abstract: An apparatus and method capable of applying weld material to metal parts on a generally automatic basis. The apparatus and method are uniquely adapted to apply weld material to the journals and crankpins and crank arms of an automotive type crankshaft on a generally automatic basis. The apparatus comprises a frame and a head stock and tail stock for rotatably supporting a crankshaft relative to the frame. A carriage is shiftable relative to the crankshaft and in a direction generally parallel to the central axis of the crankshaft. A welding torch is carried by the carriage and shiftable longitudinally and generally parallel to the central axis of said crankshaft. A torch positioning mechanism in said carriage includes a member simultaneously moveable in two mutually perpendicular directions by a drive mechanism which also causes rotation of the crankshaft.

Abstract: The weld-cladding apparatus includes a turntable which is rotatably mounted in a yoke about a horizontal axis. An outrigger is mounted on the yoke and has a curvature coincident to the curvature of the torus-to-be-cladded and a center of curvature on the axis of the turntable. The weld-cladding means is rotatably mounted at the end of the outrigger in a vertical plane common to the plane in which the pivot axis of the turntable moves during rotation of the yoke. During use, the weld-cladding means remains vertical while the turntable pivots on the horizontal axis. In order to form a weld, the turntable is oscillated back and forth about the pivot axis over an arcuate length equal to the length of the torus. The turntable is tilted incrementally a distance equal to the width of a weld.

Abstract: Disclosed are methods of producing hardfaced plate which eliminates distortion while making weld deposits along the length of a sheet-like plate of relatively ductile and weldable material by securing the plate about a cylindrical supporting surface, then welding hardfacing material to the plate's surface which causes the plate to shrink against and be supported by the cylindrical surface which effectively maintains the plate against substantial distortion during the welding. The plate with the welded hardfacing material is then removed from the cylindrical surface. Preferably, the composition of the hardfacing material is such as to form random cracks at a frequency of not less than about one in each three inches upon cooling from the welding temperature, and preferably of the order of about 5/8" to about 3/4".

Abstract: An automatic welding apparatus includes a movable welding torch carried by a positioning assembly mounted on a pair of turn frames adapted to be rotated about a horizontal axis. The positioning assembly is capable of orienting the welding torch with respect to a workpiece holder also mounted on the pair of turn frames. A computer control arrangement accurately positions the torch along three mutually orthogonal axes during welding, and controls the angular position of the pair of turn frames about the horizontal axis. In alternative embodiments, the workpiece holder is mounted on a pair of stationary stands so that the holder is independently rotatable around a horizontal axis which may be coincident with, or offset from, the axis of rotation of the turn frames. The arrangement permits automatic torch positioning for downward butt welding or horizontal fillet welding on the interior or exterior of long box-like or tubular members.

Abstract: Non-continuous forms are welded on an automatic device using a continuous welding process (e.g., Tungsten Inert Gas Process (TIG) with a continuous welding arc. The noise level of the welding system is below that which is prescribed by the Operational Safety and Health Act (OSHA). The device includes apparatus for indexing and positioning the non-continuous forms relative to the welding electrode. The device further includes apparatus for chilling the non-continuous forms during the welding process, and apparatus for periodically shunting the welding arc away from the non-continuous forms so as to maintain a continuous welding arc.

Abstract: An electric resistance welding machine in which the welding transformer is rigidly connected to an implement holding head vertically movable on an upper bracket of the machine structure, and therefore it follows the vertical movements of the welding implement so as to reduce the electrical impedance of the circuit. A workpiece-holding table is movably mounted on a lower bracket of the machine and has a lower rib which during welding is clamped by a clamping device for providing electric contact.

Abstract: A welding machine for welding pre-weld flanges and slip-on flanges onto pipes which includes an upper welding station and a lower welding station for respectively welding a flange onto a pipe from the outside and the inside of the pipe. Both welding stations are as a unit supported by a stand.

Abstract: A method for welding lead wires together by twisting into a strand a plurality of lead wires of electrical parts or the like, producing an arc between the strand and a carbon electrode, thereby melting and welding the strand by the heat from the arc to obtain a weld of high quality.

Abstract: Apparatus which rotates and tilts a dished surface and moves a welding head in unison therewith to continuously deposit weld metal at the bottom dead center of the dished surface to clad the surface.

Abstract: The disclosure relates to a method and a device for butt-welding rotational cylindrical metallic rods without filler metal and without forming a rim or deformation in the welded area. The method consists of bringing the two ends coaxially to be welded into contact proximity without compression and applying welding power while simultaneously rotating the two rods in relation to the welding heat source around their common rotational axis to an extent of more than one complete revolution.

Abstract: A method for welding lead wires together by twisting into a strand a plurality of lead wires of electrical parts or the like, producing an arc between the strand and a carbon electrode, thereby melting and welding the strand by the heat from the arc to obtain a weld of high quality.

Abstract: Apparatus is disclosed for supporting and rotating a pair of hollow tank sections of generally circular cross section, including scalene frusto-conical tank sections, during welding of the sections in end-to-end abutting relation to form an elongted tank. The apparatus includes three longitudinally spaced, axially aligned, rotatable rings which define a welding cage. The center ring includes a plurality of circumferentially spaced, radially directed jacks, each extendible the same distance regardless of the resistance encountered by a particular jack to force the abutting edges of the tank sections into a precise circular cross section and support and hold the abutting edges in aligned relation during rotation and welding.

Abstract: A welding apparatus for welding together arcuate components, for example a platform and web of a brake shoe comprises a pair of opposed clamping members which are relatively movable to engage the web, one on each side thereof, over a substantial portion of the web surface area. The clamping members are continuously rotated by suitable drive arrangement. Preferably, two such pairs of clamping members are provided for clamping respective webs.

Abstract: There is provided a method and apparatus for inductively heating elongated workpieces having a central axis and mounted in workpiece receiving stations of an indexable turret. A single shot inductor located within the path generally followed by the indexing workpieces is used to heat the workpieces. One of the turret stations, when empty, is indexed past the single shot inductor in a first direction and is loaded with a workpiece. Thereafter, the loaded station is indexed in a second direction into the heating position with the workpiece located in the single shot inductor. Thereafter, the workpiece is indexed from the single shot inductor for subsequent processing on the turret.

Abstract: A workpiece holder assembly for aligning a turbine with a turbine shaft without the requirement of an aligning pin received by the workpieces. The workpiece holder assembly receives the turbine shaft and the turbine. Upon depression of the top of the assembly, as by moving the assembly upward so as to engage an abutment, the interface between an end of the turbine shaft and one face of the turbine is exposed. The assembly is rotated over a full circle while the interface receives a welding beam of electrons. The assembly and abutment may be employed with existing electron beam welding apparatus.

Abstract: A method for facilitating the weldment of plates and stiffners which form a section of predetermined size with the least amount of handling. The method utilizes a fixture including a frame suitable to support the plates, holding devices to secure the plates to the frame, lifting mechanisms to lift the frame and plates for rotational purposes and a drive assembly to rotate the frame in an arc of 180.degree. to facilitate the weldment of the plates together to form a plate section. The fixture is designed for use as part of an in-line conveyor system.

Abstract: Apparatus comprising a rotary supporting table for moving circumaxial series of work holders in a predetermined circular path. Each work holder comprises an upright pin adapted to receive on and about itself a coil spring and a base member. The base member takes the form of an electrically conductive electrode part. At a loading station, springs are deposited successively on the pins and the table is indexed to move the pins and springs to a stress relieving station. Prior to the stress relieving station, a rotary brush engages the springs and indexes them about their pins to bring an end surface of an end coil into engagement with a small vertical abutment on the base member. The base members have inclined seating surfaces for the side surfaces of the end coils of the springs.