101 results about "Orbital welding" patented technology

The invention relates to an orbital welding device for mobile use in order to join a first pipe (1) and a second pipe end (2) along a circumferential joint (3) by at least one weld seam (4), particularly for producing a pipeline (5) to be placed on land. The inventive device includes a guide ring (6), which can be oriented toward the first pipe end (1) and the circumferential joint (3), and an orbital carriage (7) that can be motor-displaced along the guide ring (6) via an advancing device (8). On the orbital carriage (7), a laser welding head (12) for directing a laser beam (10) into a laser welding zone (13) is mounted in a manner that enables it to be oriented toward the circumferential joint (3) whereby enabling the production of the weld seam (4) along the circumferential joint (3) by displacing the orbital carriage (7). The laser beam (10) is produced by a high-power fiber laser beam source (9) located, in particular, on a mobile transport vehicle (35) while being situated at a distance from the orbital carriage (7), is guided by light guide (11) passing through a tube bundle (50) to the orbital carriage (7) and then supplied to the welding head (12). A significant advantage of the invention resides in the fact that the joining of two pipe ends by only one single welding process during a short period of time is made possible in the field with autonomous operation.

A flash butt rail welding welderhead combines in a single unit, the ability for the three functions of rail pulling, flash butt forging and maintaining the "after forged" displacement without any change in platen position such that shearing may be accomplished in three stages, a single stage, multiple stages or a progressive stage, all while maintaining clamping and stretching force on the rails.

An on site railroad rail welding repair apparatus wherein a railroad rail is an operating railroad track and a defect in the rail has been removed to provide a void and a rail-void interface while maintaining continuity of the rail having pair of cooling blocks which have an internal configuration to complement the rail, and an arc welder that fills the void with appropriate molten metal and causes the molten metal and the rail at the rail-void interface to bond. Also, a robotic welding apparatus and a weld containment apparatus engageable with the rail-void interface by movement having a pivotal and longitudinal component. Further, a mobile weld delivery unit delivering materials through an umbilical to a robotic welding apparatus having a welding device proximate the rail-void interface so that a weld can be made joining the rail-void interface.

The invention relates to the technical field of pipeline welding, in particular to a full-automatic welding machine for a steel gas pipeline. The full-automatic welding machine comprises a track, a welding trolley and a welding gun. A driving mechanism is arranged on the welding trolley. An adjusting mechanism is fixedly arranged on the welding trolley. A welding gun bracket is arranged between the welding gun and the welding trolley. The welding gun is fixedly connected with the welding gun bracket. The adjusting mechanism can adjust the distance between the welding gun bracket and the welding trolley. The welding trolley is fixedly provided with a range sensor and a controller. The range sensor is used for measuring the distance from the range sensor to the connecting seam between a first pipeline and a second pipeline. The range sensor is used for transmitting an electric signal to the controller. When the numerical value measured by the range sensor exceeds the threshold value of the controller, the controller controls the adjusting mechanism to move so as to drive the welding gun bracket to get close to or far away from the weld seam. The full-automatic welding machine has theadvantages that the position of the welding gun can be adjusted in real time, the welding quality can be improved, and the mounting precision of the track can be reduced.

An orbital welding device for forming a circumferential weld bead to engage adjoining segments of pipe is provided. The device features an annular track ring having an opening for engagement around the pipe. A travel carriage rotationally engaged with the annular track ring has a first motor for rotating the travel carriage and an engaged welding head around the pipe for forming a weld thereon. A second motor is provided to adjust a distance of the welding head from the pipe.

A method for the orbital welding of tubular elements held in abutment comprising the steps of striking an arc at a strike point with an orbital welder between an electrode and a seam formed by a first tubular element and a second tubular element, held in abutment within a fixture; initiating an orbit of said electrode around an abutment of said first tubular element and said second tubular element; adjusting the current of said arc in a pulsed manner from a maximum current to a minimum current at a set frequency, combination of said maximum current and said minimum current forming an average current; decreasing said average current in a generally continuous manner as said orbit of said electrode progresses from said strike point, the rate of decrease of said maximum current having a generally inverse relationship to the rate of increase in temperature experienced by said tubular elements.

The invention is of an improvement to orbital welding heads and welding systems for welding pipe and tubing butt joints, consisting of a novel combination of materials, including a ceramic weld insulator and a metal weld gear. Such a combination, which has a greater dielectric strength than a plastic housing design, results in a more concentric tungsten travel path, increases the duty cycles of the weld head, minimizes erratic and wandering arcing, creates an electrical insulation yielding minimal expansion, allows for increased clamping surface for improved tube alignment, and provides a compact and very robust weld head.

The invention described herein generally pertains to systems and methods related to repeatable and accurate setting of welding torch lead and lag positions, particularly with orbital welding systems. Specifically, a torch is coupled with a lead-lag coupler having a stop lug. A stop set with a stop pin is rotated to a desired position of lead or lag and secured. The lead-lag coupler, and torch which rotates therewith, are then unsecured and rotated until the stop lug contacts the stop pin. In this position, the torch is maintained at the desired angle. The stop pin remains in place throughout operation(s) to permit quick, accurate return to the desired angle if the torch is temporarily moved out of position.

An orbital weld head includes a metal insert and rotor. The covers are made from mica laminate. A metal spring/brush that is preferably one piece side loads the rotor against the insert. The rotor and insert have interengaging portions, preferably trapezoidal, that cause the rotor to move axially when it expands from heat, thus minimizing binding.

A torch head in a welding system for applying a weld to a workpiece, the torch head including a torch head body having a first side, a second side, an inward side and a outer side, the torch head body further including a lower surface and a top surface forming a solid; the torch body defining a slot extending from the lower surface to the top surface on the first side; an electrode assembly including an electrode mounted on the torch body, the electrode extending downward relative to the lower surface of the torch body; a wire adjustment assembly including a bracket supporting a wire guide that receives a wire from a wire supply; the bracket being attached to a rack and pinion supported within the slot, the rack being located inward of the pinion and slideable within the slot, the pinion being rotatable within the slot, and engaged with the rack to move the bracket vertically upon rotation of the pinion to adjust the vertical position of the wire.

The invention discloses a mobile flash butt welding method for 136RE+SS heat-treated rail, and particularly a mobile flash butt welding method for 136RE+SS heat-treated rail in the technical field of rail welding. The mobile flash butt welding method for 136RE+SS heat-treated rail in the invention includes a pre-flash stage, a flash stage, a boost stage, an upset stage and a forge stage, with a total heat input of 7.1 MJ-10.0 MJ, a total duration of 110 s-135 s and an upsetting distance of 12.8 mm-16.7 mm during the welding process. By adopting the method of the invention, mobile flash butt welding can be conducted for 136RE+SS heat-treated rail successfully, and the rail joint has less internal defects but stable welding quality, and can pass fatigue test, tensile test and slow bend test to meet the requirements. Besides, the rail joint can pass the drop weight test for 15 welds continuously, demonstrating better stability.

The invention described herein generally pertains to systems and methods for accurately and precisely mounting an orbital welder for static use. Clamp systems as described herein can include a keyed welding clamp assembly for retaining the orbital welder having an orbital welder clamp, a clamp adapter, and a clamp mount. Similarly, methods herein can include disposing a welder extension in a first extension recess of a first clamp portion and a second extension recess of a second clamp portion, aligning an alignment key with a first key recess of the first clamp portion and a second key recess of the second clamp portion, and closing the first clamp portion toward the second clamp portion using a clamp mechanism. An operational welding system including clamps herein can further include the orbital welder and/or components thereof.

The invention relates to welding equipment, in particular to an automatic welding machine for welding of a phase shifter. The automatic welding machine for welding of the phase shifter comprises a base, base upper tracks, base side tracks, welding tools, a welding arm, a welding arm support and a control box. The base is shaped like a cube. The upper surface of the base is provided with two equal-size tool locating bosses parallel to the side edges. The base upper tracks are arranged on the two sides of the tool locating bosses. One welding tool is arranged on each tool locating boss. The welding tools are fixed to the corresponding tool locating bosses through screws or buckled onto the base upper tracks through buckles to be movably mounted on the tool locating bosses. The automatic welding machine can be used for welding different sizes of products by replacing the welding tools.

The invention provides a manufacturing method of a wrapper plate type side wall structure of a wagon. The manufacturing method comprises the following steps: (1) decoiling and pre-treating a plate; (2) blanking and leveling the plate; (3) cutting a side wallboard and then laminating, i.e., according to the length and shape requirement of a side wallboard product, cutting out N equi-length single plates G01, G02...G0N, dividing the N equi-length single plates G01, G02...G0N into M groups in sequence, wherein each group comprises 2-4 single plates, and then carrying out double-face welding on each group of single plates so as to splice M large plates; (4) respectively rounding the M large plates into M arc-shaped side wallboards according to the required radian; and (5) assembling and welding side walls: successively hanging the M arc-shaped side wallboards on a side wall assembling base seat tire, assembling various arc-shaped side wallboards, carrying out positioning welding after clamping and fixing, carrying out assembling gap welding by using a welding tractor matched with a flexible track, after the side wallboards are turned over, clamping and positioning the inner side faces of the side wallboards, and carrying out continuous full-length welding on the inner side faces of the side wallboards by using the welding tractor matched with the flexible track.

The invention discloses a metal welding forming system based on CMT (cold metal transition). The metal welding forming system comprises a welding industrial personal computer, wherein the welding industrial personal computer is connected with an operation panel. The invention also discloses a metal welding forming method based on the CMT. The metal welding forming method comprises the following steps of putting a processed part, analyzing the shape of the processed metal by the CMT welding system, encoding by an inference engine to set a working track, welding by a welding mechanism along the track, and comparing and straightening in the welding process. The metal welding forming system and the metal welding forming method have the advantages that an image collection card and an optical visual sensor are used for inputting the to-be-welded shape of the metal into the industrial personal computer, database analysis is performed by the CMT welding forming system in the industrial personal computer, a track forming analysis code is encoded through the inference engine, and the welding of the welding mechanism is controlled, so that the shape of the welding metal meets the actual requirements; the forward delivery and back-drawing of a welding wire are controlled by a wire pushing device and a servo wire drawing device in the welding mechanism, so that the closed-loop cold and heat control function is realized.

A method and apparatus for a constructing misting manifold is disclosed that uses a standardized intermediate member joined to tubing. The method allows mass production, particularly with use of orbital welding, easy alignment of the component part and high quality welds.

Embodiments are directed to an orbital welding system, including customized orbital weld head fixtures, and computer-controlled programs for performing homogeneous orbital welds. In one scenario, an orbital welding system includes a controller, a shield gas supply system that supplies gases to an orbital welding tool, an electrical supply system that supplies an electrical current to the orbital welding tool, and the orbital welding tool, which includes a welding electrode that is configured to weld two or more items together using the supplied electrical current and the gases supplied by the gas supply system. The controller generates control signals that direct the orbital welding tool, the electrical supply system, and the gas supply system to homogeneously orbital weld the at least two items together, so that the at least two items are homogeneously welded together without using a filler material. Various other methods, systems, and apparatuses are also described.

The invention relates to a gantry crane large pinwheel manufacturing jig and accuracy control method, and belongs to the field of gantry crane structure manufacturing. Bottom plate, track plate and whole assemblage manufacturing processes are carried out on a plane jig and an assemblage jig; a bottom plate is subject to assemblage-welding on the plane jig in a marking manner, and track steel is also subject to assemblage-welding on the plane jig; the bottom plate and a track plate which are obtained after assemblage are placed on the assemblage jig, and meanwhile, a rib plate, a panel and a needle pin ring plate are subject to assemblage-welding; a reasonable assembling-welding sequence is used; and the bottom plate is subject to assembling-welding, the steel track steel is subject to assembling-welding, and the bottom plate, the track plate, a stiffening plate, the panel and a needle hole plate are subject to assembling-welding. The reasonable welding sequence is used in a matched manner, the basic principle is that a T-shaped welding opening is firstly achieved, a separating plate is welded in the vertical direction and the horizontal direction in sequence, symmetry welding is adopted in bottom plate and track welding and separating plate welding, the middle of a needle pin ring plate is welded firstly, and the two sides of the needle pin ring plate are welded secondly. According to the gantry crane large pinwheel manufacturing jig and accuracy control method, through the reasonable manufacturing process, the construction difficulty can be reduced, and the cost is reduced.

The invention relates to an induction normalizing method for a steel rail. The method applying an induction heating technology to a normalizing process of seamless welding of a track comprises the following steps: first, carrying out medium frequency induction heating to the normalizing temperature of 840-880 DEG C and keeping the temperature for 8-10 minutes; then introducing cold water into a designed novel induction coil to water cool the induction heated steel rail, wherein the integral steel rail is cooled by water; and finally, naturally cooling the steel rail to room temperature when the temperature of the steel rail is reduced to 445-455 DEG C. Compared with the prior art, by applying induction heating to normalizing of track welding, the environmental pollution problem in the prior art is reduced, the heating speed and the heating efficiency are improved effectively, the time of the whole normalizing process is shortened greatly, and the demand of automation is easily met.

The invention provides a tubular pile welding vehicle capable of being mounted and dismounted quickly and provided with a locking track. The tubular pile welding vehicle comprises the quick locking track, a welding trolley, a control system and an operating handle. The welding trolley comprises a clamping mechanism, and the welding trolley is clamped on the quick locking track through the clamping mechanism. The control system is installed on the welding trolley and connected with the welding trolley. The operating handle is connected with the control system and used for controlling the welding trolley by controlling the control system. According to the tubular pile welding vehicle capable of being mounted and dismounted quickly and provided with the locking track, the welding trolley is clamped on the quick locking track through the clamping mechanism, manual locking is not needed, and the stability in the welding process can be ensured.