Abstract: A pipe lining apparatus having a pressure sensitive adhesive backed reinforcement filament that is helically wound onto the inner surface of a pipe or pipe lining by an inverted filament winding apparatus, the apparatus having multiple spools and applicator arms to retain and apply the filament. The applicator arms may be aligned circumferentially or axially.

Abstract: Provided are an apparatus for forming non-excavation water and sewage pipe lining for rehabilitation using a textile grid reinforcement material and mortar lining, which allows a textile grid reinforcement material to be continuously disposed and mortar lining to be formed thereon when an old water and sewage pipe is rehabilitated by forming mortar lining in the old water and sewage pipe to fundamentally suppress fine cracks generated on the coated mortar lining, allows the textile grid reinforcement material, to be applied so as to solve a problem of corrosion of the reinforcement material generated when a conventional reinforcing bar or a wire mesh is applied, and in comparison to a conventional method of forming lining of only mortar, allows the textile grid reinforcement material to be applied to reduce a thickness of mortar lining and to perform continuous construction so as to perform economical construction, and a method thereof.

Abstract: A pipe lining apparatus having a settable, resin-impregnated reinforcement filament that is helically wound onto the inner surface of a pipe or pipe lining by an inverted filament winding apparatus, the apparatus having multiple spools and applicator arms to retain and apply the filament. The applicator arms may be aligned circumferentially or axially.

Abstract: A winding machine (1) includes a main body (20), a first arm (40), and a second arm (50). The main body (20) moves toward a winding direction front side as a profile strip (100) is added, while rotating at a winding direction front end portion of a formed pipe member (4). The first and the second arms (40) and (50) are supported by the main body (20) respectively at positions away from each other in a circumference direction of the formed pipe member (4), and extend toward a winding direction rear side between an existing pipe (2) and the formed pipe member (4). The first arm (40) includes a first restricting portion (43) that comes into contact with a winding direction front side of a reinforcement member (120) provided to the profile strip (100) forming the formed pipe member (4) via the profile strip (100).

Abstract: A method and apparatus for flip chip bonding using conductive and inductive heating to heat a plurality of solder bumps located between a chip carrier and a chip.

Abstract: It is an object of the present invention to provide a seam welding warpage prevention method and apparatus capable of preventing warpage caused by cooling contraction after welding, in a case where workpieces are different from one another in material and thickness, and thus not uniform in thermal contraction. In the seam welding warpage prevention method for welding a plurality of workpieces W1 and W2 that are not uniform in thermal contraction with respect to an energizing direction, the workpieces W1 and W2 are clamped with a pair of roller electrodes 23 and 33 while applying current. The welding is performed in a state where the roller electrode 33 that abuts on the workpiece W2 having higher thermal contraction is offset in an advancing direction ahead of the roller electrode 23 that abuts on the workpiece W1 having lower thermal contraction.

Abstract: A seat ring for a control valve has a valve body defining an inlet, an outlet, and a gallery. The seat ring includes an annular body and a flow separator. The annular body is adapted to he disposed in the gallery of the valve body and includes an interior sidewall defining a port for accommodating fluid flow through the gallery. The flow separator is disposed within the port and includes a flow straightening portion defining a plurality of separate passageways. Each of the plurality of separate passageways has a hydraulic diameter and a length that is larger than the hydraulic diameter. As such, the passageways separate the flow of fluid through the port into a plurality of separate flow paths to interrupt turbulence adjacent to the port.

Abstract: A method of welding reinforcement steel bars (rebar) and assembly of fusion-welded rebar into panel assemblies that are self-stabilizing to withstand the rigors of transport to and positioning within construction sites. The rebar welding method generates fusion welds in such a manner that the weld imparts stability and strength to the welded rebar assemblies. The rebar welds permit the assembling of larger and more varied rebar panel configurations without the need for tie wire or other coupling devices. Further, the welded panels allow positioning of large rebar configurations, insuring that the spacing of the individual bars exceeds all required tolerances. The self-stabilizing fusion rebar welding process allows a more efficient, flexible and rapid method of rebar panel construction by using assembly systems on mobilized trailers or at stationary locations.

Abstract: An apparatus for manufacturing wire wrapped screens utilizing a wire and support ribs is provided. The apparatus employs welding pressure control, utilizing a welding device mounted on a support assembly, wherein the support assembly is moveable in relation to a mounting structure and the wire and support rib weld pieces. Welding pressure is determined by a force measurement device, and a control and feedback system adjusts pressure. Mechanical actuator cylinders mounted on the support assembly and the mounting structure provide load balance. A method for making wire wrapped screens is also provided.

Abstract: A covering for a containment pool, tank or enclosure, in particular a containment enclosure for a nuclear power plant, is produced by placing metal sheets parallel to a first wall at a predetermined distance from the latter, each sheet comprising anchoring elements, on a first face arranged facing the first wall, placing a rail situated between the anchoring elements and comprising side walls and a base delineating a space facing the area to be welded with two adjacent sheets, making a weld bead by full-penetration butt welding of the adjacent metal sheets, and pouring concrete between said first wall and the metal sheets, the anchoring elements of the metal sheets being completely independent from the weld bead after the concrete has been poured.

Abstract: A method and system is provided to join workpieces where a high energy heat source is used to create discrete holes in the workpieces and a filler material is deposited in the discrete holes to create separate fasteners that join the workpieces together.

Abstract: A method of forming a wire includes providing a first wire segment and a second wire segment. The first and second wire segments are inserted into opposite ends of a coupling segment. The coupling segment is laser welded such that the laser creates an indent in the coupling segment that penetrates into at least one of the first and second wire segments.

Abstract: The present invention relates to an inflammable mat board for an architecture and a method for manufacturing the same, and in particular to a mat board which is characterized in that in an inflammable mat board for architecture, a mat shaped board is manufactured in such a way that a metallic thread made from an iron, a nonferrous metal, a waste can and a waste tin plate, etc. is tangled like a cotton ball in a thin sheet shape, so it is possible to recycle materials, and an inflammability can be enhanced, and a heat insulation effect can be maximized, and a recycling rate can be enhanced in terms of a material management, and the production of wastes can be advantageously minimized, thus contributing a lot to a green growth policy of the world.

Abstract: An apparatus and method of bonding refractory metal alloys together by use of a modified clamping arrangement.

Abstract: A method of making a guide wire involves butting a connection end face at a proximal end of a first wire against a connection end face at a distal end of a second wire while applying voltage and a pressing force to weld together the first and second wires at a welded portion. The welded portion forms a projection that projects outwardly in an outer peripheral direction relative to portions of the first and second wire adjacent the projection. The outer dimension of the projection at the welded portion is adjusted so that upon completing adjusting the outer dimension of the projection the projection still projects outwardly in the outer peripheral direction relative to the portions of the first and second wire adjacent the projection.

Abstract: A method for welding wires (2) is provided, wherein at least two wires (2) are welded to each other by way of a laser source, wherein at least one wire (2) to be welded is subjected to an annealing process using a hot gas flow prior to the welding process, and/or at least the resulting welded joint is subjected to an annealing process using a hot gas flow during the welding process, and/or the resulting welded joint is subjected to an annealing process using a hot gas flow following the welding process.

Abstract: Apparatus for pre-heating tubular articles prior to welding and a method of using the apparatus are disclosed. The apparatus comprises a support for carrying tubular articles such that they can be rotated together about long axis of the articles. A heater has a heating head that can be placed adjacent a region to be welded. The articles can be rotated so the region to be welded passes the heating head and is thereby heated to enable it to be welded subsequently. The heater is typically an induction heater. The method of welding tubular articles comprises mounting the articles in the support of a pre-heating apparatus of a welding installation embodying the invention and rotating the articles such that a weld region passes adjacent to the heating head. Then a part of the weld region is welded after it has rotated past and has been heated by the heating head.

Abstract: A machine for forming at least a metal mesh comprising longitudinal wires and transverse wires, comprising at least a welding unit provided with a plurality of welders by means of which the longitudinal wires are welded to corresponding transverse wires, each of the welders comprising at least two electrodes, respectively upper and lower, selectively movable between a first feed position, in which at least a first electrode is distant from the transverse and longitudinal wires, and a second welding position, in which both the electrodes contact and weld the wires by means of a passage of current. The welding unit is electrically fed by a three-phase type system.

Abstract: A method of welding reinforcement steel bars (rebar) and assembly of fusion-welded rebar into panel assemblies that are self-stabilizing to withstand the rigors of transport to and positioning within construction sites. The rebar welding method generates fusion welds in such a manner that the weld imparts stability and strength to the welded rebar assemblies. The rebar welds permit the assembling of larger and more varied rebar panel configurations without the need for tie wire or other coupling devices. Further, the welded panels allow positioning of large rebar configurations, insuring that the spacing of the individual bars exceeds all required tolerances. The self-stabilizing fusion rebar welding process allows a more efficient, flexible and rapid method of rebar panel construction by using assembly systems on mobilized trailers or at stationary locations.

Abstract: Welding systems and methods include a welding unit for joining a first and a second source of wire, in which the welding unit includes a wire feed tunnel defining a travel path through the welding unit for the first and second sources of wire. The welding unit further includes a pair of wire feed ports disposed on opposite ends of the wire feed tunnel, and a wire joining zone disposed along a portion of the feed tunnel and configured to weld together an end of the first wire source to an end of the second wire source by applying weld heat to at least part of the respective ends of the first and second wire sources. The welding unit also includes a switch configured to adjust the inner diameter of the wire feed tunnel until the inner diameter is substantially the same as the exterior diameter of the first and/or second sources of wire.

Abstract: A guide wire includes a wire member having a first wire disposed on the distal side of the guide wire, and a second wire disposed on the proximal side from the first wire. The second wire is made from a material having an elastic modulus larger than that of the first wire. For example, the first wire is made from a superelastic alloy, and the second wire is made from a stainless steel. The first wire is joined to the second wire at a welded portion by welding. A coil is disposed on the distal side from the first wire. A cover layer is formed on the outer peripheral surface of the wire member in such a manner as to cover at least the welded portion. The cover layer is made from a material capable of reducing the friction of the cover layer, for example, a fluorocarbon resin or a hydrophilic material, to thereby improve the sliding performance of the guide wire. Such a guide wire is excellent in operationality and kink resistance.

Abstract: A method of welding reinforcement steel bars (rebar) and assembly of fusion-welded rebar into panel assemblies that are self-stabilizing to withstand the rigors of transport to and positioning within construction sites. The rebar welding method generates fusion welds in such a manner that the weld imparts stability and strength to the welded rebar assemblies. The rebar welds permit the assembling of larger and more varied rebar panel configurations without the need for tie wire or other coupling devices. Further, the welded panels allow positioning of large rebar configurations, insuring that the spacing of the individual bars exceeds all required tolerances. The self-stabilizing fusion rebar welding process allows a more efficient, flexible and rapid method of rebar panel construction by using assembly systems on mobilized trailers or at stationary locations.

Abstract: A method of welding reinforcement steel bars (rebar) and assembly of fusion-welded rebar into panel assemblies that are self-stabilizing to withstand the rigors of transport to and positioning within construction sites. The rebar welding method generates fusion welds in such a manner that the weld imparts stability and strength to the welded rebar assemblies. The rebar welds permit the assembling of larger and more varied rebar panel configurations without the need for tie wire or other coupling devices. Further, the welded panels allow positioning of large rebar configurations, insuring that the spacing of the individual bars exceeds all required tolerances. The self-stabilizing fusion rebar welding process allows a more efficient, flexible and rapid method of rebar panel construction by using assembly systems on mobilized trailers or at stationary locations.

Abstract: A barrier such as a fence is formed by welding conductive upright members to conductive U-shaped rails by a projection resistance welding process. The rail includes at least one weld-forming region which projects within the rail channel, and may be formed within as a ridge, or as a longitudinally spaced series of nipple-shaped projections. The upright member is transversely positioned within the rail channel in contact with the weld-forming region. A welding current transmitted between the upright member and the rail causes the weld-forming region to at least partially melt and form a weld within the rail channel.

Abstract: A stabilizer bar assembly for an automotive vehicle includes a stabilizer bar, a bushing mounted to the stabilizer bar, and a support ring mounted onto the stabilizer bar adjacent the bushing to provide a stop to prevent the bushing from moving axially along the stabilizer bar. The support ring has a plurality of inwardly extending projections. Each of the inwardly extending projections has a distal end in contact with an outer surface of the stabilizer bar. The distal ends of the inwardly extending projections are welded to the outer surface of the stabilizer bar to secure the support ring onto the stabilizer bar.

Abstract: An apparatus and method for supplying a continuous source of wire includes a base supporting at least first and second sources of wire, a wire joining apparatus adjacent the base configured to weld a first wire from the first source with a second wire from the second source and a swing arm apparatus adjacent the first and second sources of wire. The swing arm apparatus may comprise a swing arm assembly configured to position a source cover over the second source of wire upon depletion of a feed wire in the first source of wire.

Abstract: A method of welding reinforcement steel bars (rebar) and assembly of fusion-welded rebar into panel assemblies that are self-stabilizing to withstand the rigors of transport to and positioning within construction sites. The rebar welding method generates fusion welds in such a manner that the weld imparts stability and strength to the welded rebar assemblies. The rebar welds permit the assembling of larger and more varied rebar panel configurations without the need for tie wire or other coupling devices. Further, the welded panels allow positioning of large rebar configurations, insuring that the spacing of the individual bars exceeds all required tolerances. The self-stabilizing fusion rebar welding process allows a more efficient, flexible and rapid method of rebar panel construction by using assembly systems on mobilized trailers or at stationary locations.

Abstract: A method of welding reinforcement steel bars (rebar) and assembly of fusion-welded rebar into panel assemblies that are self-stabilizing to withstand the rigors of transport to and positioning within construction sites. The rebar welding method generates fusion welds in such a manner that the weld imparts stability and strength to the welded rebar assemblies. The rebar welds permit the assembling of larger and more varied rebar panel configurations without the need for tie wire or other coupling devices. Further, the welded panels allow positioning of large rebar configurations, insuring that the spacing of the individual bars exceeds all required tolerances. The self-stabilizing fusion rebar welding process allows a more efficient, flexible and rapid method of rebar panel construction by using assembly systems on mobilized trailers or at stationary locations.

Abstract: First line element made of, e.g., wire and second line elements made of, e.g., wire are disposed so that they cross each other and they are welded together at crossing points to form a net. The net is pressed to form an undulating net. An undulating net of a first layer and an undulating net of a second layer are laid one upon the other in such a manner that crossing points of the undulating net of the first layer alternately come into contact with and are separated from crossing points of the undulating net of the second layer. The crossing points which are in contact with each other are welded together by a welding machine. Subsequently, undulating nets of a third to n-th layers are similarly processed to form a three-dimensional net-like structure.

Abstract: The invention relates to a resistance welding process for welding metal parts together. To improve the quality of the weld, at least one welding electrode (4) is embodied as a circular cylinder, which is seated so that it rotates around its cylinder axis. In accordance with the invention, the welding electrode (4) in the shape of a circular cylinder is caused to rotate at least during the welding of the metal parts (1, 2), so that by means of creating a sliding friction between the surface area of the welding electrode (4) and the surface of the metal part (2) resting against it the surface of the latter is freed of possible impurities. The process is particularly well suited for welding sand-blasted molybdenum foils and tungsten wires together.

Abstract: A method of manufacture of a metal pallet having a deck member formed as a grate or grid by the perpendicular intersection of plural rod members with flat bar members positioned on edge, where the rod members are embedded within the flat bar members by pressure resistance welding such that the upper surface defined by the rod members is even with the upper surface defined by the flat bar members.

Abstract: The present invention relates to a method of manufacturing a wire screen product which is especially suitable for screening fiber suspensions of the wood processing industry. It is a characteristic feature of the method according to the invention of manufacturing a wire screen product including screen wires disposed crosswire in relation to a support arranagement that includes at least one support wire, the screen wires and support wire being secured to each other such that, at the first stage, the screen wire is welded by a button spot weld to the support arrangement and, at the second stage, the screen wire is welded at another point to the same support structure.

Abstract: Methods and apparatus for replacing an old wire threaded through a flyer winder with a new wire are provided. A first end of the old wire is connected to a first end of the new wire. The wires may be connected by twining, clamping, welding or the like. A second end of the old wire that extends from one of the winder's flyers is then connected to a collection device, and the old wire is collected until the new wire has been threaded through the flyer winder along the same path traveled by the old wire. The collection device may be an armature or similar structure having recesses for collecting the old wire during wire change-over or replacement. Preferably the collection device is configured so that conventional coil lead connection operations may be used to expedite wire change-over or replacement.

Abstract: A method and device for electrically connecting enameled wire ends with contact surfaces. The enameled wire is stripped and pressed against the contact surface. The wire is charged with at least one of an electromagnetic and an acoustical energy. The enamel layer of the wire end is destroyed with the first energy in a first step. This is accomplished by charging the region with at least one of a first electromagnetic energy and a first acoustical energy. The enamel layer of the wire end is only partially destroyed in the first step through the pressing of a region of the wire end against the contact surface with a first pressing force. The wire is permanently connected to the contact surface with a second energy in a further step. The same region of the wire is pressed against the contact surface with a second, lower pressing force in the subsequent process step. It is charged with a second energy and connected to the contact surface so as to conduct electricity.

Abstract: A resistance welding apparatus in which welding portions of materials to be welded are resistance-welded with each other by use of resistance heating caused by conduction of a welding current while the welding portions are pressed between a pair of electrodes, characterized in that the apparatus comprises: a welding transformer for supplying the welding current; a welding timer for controlling the current-conduction time of the welding current; a width measurement unit for measuring the welding width of the welding portions; an arithmetic operation unit for reversely calculating the reference welding height of the welding portions from the welding width measured by the width measurement unit on the basis of a predetermined reference welding sectional area of the welding portions; a height detection unit for detecting whether the height of the welding portion has reached the reference welding height or not; and an interface for controlling the welding timer to stop conduction of the welding current when the re

Abstract: A method of manufacturing a suspension damper with a welded rod fitting includes attaching a piston rod to a piston assembly. The piston assembly with the attached piston rod is inserted into a tube so that the piston rod extends from the tube. Hydraulic fluid is added to the tube either before or after the piston assembly is inserted. A rod guide assembly is slidingly received over the piston rod and is secured to the tube. An end fitting is secured in a weld fixture. The tube, containing hydraulic fluid, the piston assembly, the secured rod guide and the extending piston rod is positioned so that the piston rod abuts the end fitting. An electrical current is passed through the end fitting and the piston rod. The piston rod is moved away from the end fitting forming a gap as the electrical current is passing through the end fitting and the piston rod so that an arc is established across the gap to weld the end fitting to the piston rod.

Abstract: A method of manufacturing a strong orthopaedic wire (30). A block (20) has an opening (26) with an interior diameter which is slightly larger than an outside diameter (28) of the wire (30). The wire (30) is placed within the opening (26) such that an end (36) of the wire (30) extends a predetermined distance (40) above the block (20). The extending end (36) is heated (e.g. by applying an electric current) until the metal from which the wire is made reaches the wire melting point. The molten metal is allowed to fall via gravitational force against the block (20), whereby the extending end (36) forms an enlarged end (42) on the wire (30).

Abstract: An apparatus and method for making welded mesh forms (10) having a stationary center beam (12) and an adjustable center beam (14). Two adjustable side beams (36 and 38) and one adjustable bottom beam and clamp (20) are provided so that any number of circular, arched, and/or elliptical wire mesh forms may be created. Once the desired shape has been properly formed by adjustment, a wire mesh (44) is inserted in between the adjustable clamps contained on the beams. A centering/positioning device (62) then grips the mesh along one free longitudinal edge and holds the wire mesh (44) in place as the clamps are clamped to the wire mesh (44) in clockwise sequence. This clockwise sequence adjusts the prerolled wire mesh (44) and creates a perfectly formed wire mesh (44) in the shape and diameter desired.

Abstract: A method for attaching a stretched damper wire to a cathode ray tube including the steps of locating each end of a damper wire at a first position with respect to a pair of damper springs and welding each end of the damper wire to each of the damper springs while holding the damper wire between each of the damper springs and a welding ribbon. Next, the damper springs are moved to a frame of the cathode ray tube and welded at second positions thereof to upstanding portions of said frame so as to stretch the damper wire between the damper springs on an aperture grill.

Abstract: Method for the manufacture of a nail element comprising a plate-shaped body and one or more elongate elements whereby in accordance with the invention in each case at least one elongate element is set at an angle relative to the face of the plate-shaped body and brought into contact with it, whereupon heat, for example from electric resistance welding, is generated at the point of contact for melting the material of the elongate element and the plate-shaped body in order to weld these to each other, so that a nail element may be obtained in a simple manner and inexpensively.

Abstract: End faces of copper alloys to be used for electrical conductors are placed in contacting relationship under a compressive force below the yield strength of the copper alloy conductor in the room temperature condition. The contacting end faces are heated under continuous compression at a temperature of at least 300.degree. C. but below the solvus temperature of the copper alloy in at least one heating cycle.

Abstract: A process for manufacturing a slotted hole screen made by mechanically joining a plurality of longitudinal members to a plurality of cross bars reduces joint roughness, burrs and recesses by including a step of covering the joints with a covering material which has a smooth exterior surface. The covering material is liquefied and has sufficient surface tension to form the smooth surface. In an alternative embodiment, the joints in a slotted screen formed by welding a plurality of longitudinal members to a plurality of cross bars are smoothed by selectively remelting the joints to form the smooth exterior.

Abstract: Double-spot welding machine for producing wire grids (G), having welding lines (S.sub.1, S.sub.2) of top and bottom electrodes (2, 3), which welding lines (S.sub.1, S.sub.2) are arranged at a mutual distance apart in a longitudinal wire advance direction and run transversely to the longitudinal-wire advance direction. A cross-wire feed apparatus (9) feeds two cross wires (Q.sub.1, Q.sub.2) along two insertion lines (E.sub.1, E.sub.2) arranged in front of the welding lines (S.sub.1, S.sub.2) at their predetermined distance from one another. A cross-wire transfer apparatus (10) transfers the cross wires (Q.sub.1, Q.sub.2) from the insertion lines (E.sub.1, E.sub.2) into the welding lines (S.sub.1, S.sub.2). The longitudinal wires (L) are advanced to the welding lines (S.sub.1, S.sub.2) and the welded wire grid (G) is pushed out of the welding lines (S.sub.1, S.sub.2). A holding arrangement (15, 18) holds the cross wires (Q.sub.1, Q.sub.

Abstract: Making wire screens using high carbon steel wire. A first array of wires are placed in a longitudinal configuration and a second array of wires are placed transversely of said first array. The junctions where the wires meet are heated to a temperature of from about 700.degree. F. to about 1000.degree. F. for a time sufficient to disperse heat to adjacent wire areas but insufficient to cause wire fusion. A current is then applied to these junctions sufficient to cause fusion or welding of the junctions. Subsequently, a post weld heat of at least 1575.degree. F. is applied to the wires sufficient to form pearlite in substantial amounts.

Abstract: A method for welding copper to a ferrous alloy is provided in which an end of the copper wire, either in a single conductor form or a plurality of strands, is exposed to an electrical discharge to form a globule that is generally spherical. The globule is formed by a melting and rapid resolidification of the copper conductor. The generally spherical globule is then placed in contact with a generally flat surface of a ferrous allow terminal. Very slight pressure is provided to avoid deforming the spherical copper globule as a current is passed through both the globule and the ferrous alloy terminal.

Abstract: Apparatus for the feeding of transverse wires from a feed position to the welding line of a grid welding machine has at least one nozzle (9) which is directed towards the welding line, and which can be supplied with compressed air in time with the welding cycle. Parallel guides (5, 6) lead out from the nozzle, bounding either side of the transverse wire feed path, but ending ahead of the region of the welding electrodes. There are provided, in the region of the welding electrodes (1, 2), devices (11) preferably designed as magnets, for the catching and holding of the respectively fed transverse wire at the welding line. Conveyance with compressed air means that mechanical parts engaging in the welding area and susceptible to faults are avoided and at the same time changing of the longitudinal pitch of the transverse wires is facilitated.

Abstract: A conductor embedded in the insulating layers of an implantable lead is connected to an electrode by arranging the conductor to be included as one pole in a high voltage circuit having another pole in the form of a needle or the like placed in the vicinity of the conductor. The voltage is increased until an insulating layer-puncturing flash-over between the conductor and the needle takes place. The flash-over arc is maintained to burn a hole in the insulation layers so that the conductor is exposed. The conductor can then be removed out with a curved tool to form a connecting end to be applied to the electrode, or a supplementary conductor can be attached to the exposed conductor for attachment to the electrode.

Abstract: This method of electric welding metal band ends together comprises a fusion cycle with the introduction of inert gas, a cooling cycle with the introduction of cooling air, and an annealing cycle. The method is carried out in a fusion head having grippers to manipulate the band ends, and a control system for the grippers, inert gas, cooling air, welding and annealing currents and timing functions.

Abstract: A welding process for the manufacture of high carbon steel wire mesh for use in wire screens. In this process at least two high carbon steel wires are crossed and its junction pre-weld heated. The amount of heat applied at this pre-weld step is insufficient to cause wire fusion but sufficient to allow heat to disperse to adjacent areas of each wire. The wires are subsequently welded together and further heated by raising the temperature at the wire junction to a second temperature of at least about 1575.degree. F.

Abstract: An insulated welded wire structural building panel and a method for making such panels are disclosed. The panel has a plurality of parallel trusses joined together with cross wires. Each truss is triangular in cross section. A layer of polyurethane foam is provided in the panel spaced from both the front side and the back side of the panel. On one surface of the foam is a layer of solidified viscous material, such as asphalt or a thermoplastic. The cross wires on opposite sides of the panel are offset from each other along the axes of the truss runner wires to which they are welded.