SA99200002B1 - welding control system - Google Patents

Abstract

Abstract: The present invention relates to a device and method for welding two pipe sections (20) together using electrode (50), and moving the electrode towards a gap between the two pipe pieces so that the electrode moves around the outer peripheral surface of the two pipe pieces during the welding process. During the welding process, welding parameters are recorded and linked to a specified position. The position of the formed weld bead (30) is determined by GPS satellites (80) 40 yen.

Description

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Welding 48) yal Complete description of the “electric arc welding” system The invention relates to welding technology during the welding process and its control. Welding Patents Mentioned for Reference The present invention relates to a process for welding and monitoring tubular sections. The US Patent No. 8,176,851 was mentioned in this statement for reference as a background for information related to welding 0 pipe sections Lea pipe sections The background of the invention and in particular the device and method of arc welding This invention relates to the field of consumable electrode arc welding Using an electrode benefited from aa steel plates to weld two steel plates during the welding process, specifically; Related to welding parameters and monitoring welding variables 0 short circuiting arc welding The invention relates to a device and method for short circuit arc welding, monitoring welding parameters, and determining cored electrode using a Tas electrode for shaped tubular pieces. welding bead site Welding bead To transfer various materials such as oil, gas and water to a pipe system, the pipe network is used in a desired location. This pipeline network can be extended from hundreds of miles to thousands of miles. And in Vo many cases; This pipeline network crosses remote and often undeveloped locations. in to provide the GI end with large diameter pipe end welding technology; The ends of each pipe are usually made, then the ends are aligned ¢narrow flat land and a narrow flat bevel external bevel inclined to the outside made axially machined with the bevels so that they are close together, but they are usually somewhat spaced one or more welding head to form a smooth gap between the two ends of the tube; Then a vy welding head is placed. a

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Around the tube to form a weld at an angle of 710 m. Bale weld bead is formed in several steps. Firstly; A root pass is formed, where at least the edges or internal footings of the pipes are melted and the gap between the footings is filled with weld metal, and the Lad is formed after several filler passes, where the space formed by the inclined end is filled so that 0 The weld metal shall be at least level with the outer surface of the pipe. The Lila To Ja root pass is very serious in the welding process. Once the root pass formation is completed; Ensures alignment of tubes. Thus a fixed weld bead of 7001 should be placed during root pass formation. Consistency of the weld point means complete fusion of each of the supports clearly through the inner surface of the tubes and the full filling of the space between the supports with the weld metal. The deposition of the weld metal in the gap is difficult because the weld bead should be formed by moving the welding heads around the pipe so that the welding position changes from flat downhand welding or vertical up or down welding to overhead welding when forming Pass the rooting around the tube. dle on it; The weld metal formed during root pass forming should fill the gap between the tubular pieces and should not be allowed to pass through the gap and accumulate vo on the inner surface of the tube. The weld bead should also form a relatively smooth surface with respect to the inner part of the tube, from which a small protusion, Tan, is projected towards the inner part of the tube, if any. Excessive protrusion of the weld bead into the pipe can cause: 1) problems with devices that operate inside the pipes to detect the stability of the pipe network, and)

Undesirable fluid mixing and turbulence when transporting fluids through a piping network.

9 He disclosed a root bead-forming welding apparatus acceptable to US Patent No. 0,1716,801. This patent describes two tools for forming welding bugs that move continuously on a track around the circumference of the tube and incorporate a special short circuiting power source to form a root bead between the two ends of the tube. This patent states that with the correct selection of the speed of the bead forming tool and the speed of

Yo welding wire speed Only slight burning occurs through each edge of the bevel tip

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¢ A small flat weft is formed inside the tube. The Lincoln Electric Company has discovered that the welding apparatus described in US Patent No. 81 5,116 can be modified for use with a flux cored electrode to obtain the desired composition of the weld bead so that the composition of the weld metal closely matches the Constructing the tube metal to form a strong and durable weld bead. The welding device can also be modified to ensure that the shielding gas shields the weld bead from harmful ambient effects using a self shielding flux system where the shielding gas (Sd) forms the weld. Typically, pipelines are designed to be hundreds of miles long. Because of the length of the pipework oda. the assembly may form the pipework partly along the course of the pipework. Due to the large length of the pipe network and the importance of properly welding the pipe piece, Tae; A team of welders should be available to inspect the progress of the pipework, its quality, and the quality of the weld bead formed between each pipe piece. On Al sites the costs associated with hiring a team of technicians can be very expensive. These costs may prevent the construction of the pipeline forever. Also, the e-technician team may be exposed to undesirable conditions when laying the piping network in remote and/or undeveloped locations. Such undesirable conditions may adversely affect the health of the technicians and/or impair their ability to continuously monitor the quality of the welding process, leading to process delays, increased costs and the formation of defective welding beads along the pipe network. In addition to the problems associated with the stay of the team of technicians at the welding site; There are problems associated with determining the progress of a weld© - along the pipeline and locating a weld or other problem occurring along the pipeline. in remote and/or undeveloped locations; It would be very difficult if not impossible; Checking the geographical location of the AY welder along the pipe network and the location of the weld beads formed by the welding machine along the pipeline to report the progress of the welding process and/or problems related to it.

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In view of the problems associated with welding tubular segments in a large pipeline network; There is a need for a weld control system that monitors the quality of the weld bead formed and the location of such weld bead. General Description of the Invention The present invention relates to a method and apparatus for welding two sheets of steel together and controlling the variables of the welding process; Specifically; Relates to a method and apparatus for welding Tae tube-pieces and observing one or more welding variables during weld bead formation between the tubular pieces and attaching such welding variables to a site. However, the invention has broader applications (Says is used to weld other long metal workpieces such as railways, track rails, components of aircraft, ships, bridges... etc. Gy Ve of the preferred embodiment of the present invention” provides a Jad workpiece containing one or more components and a welder designed to produce a weld bead for welding one or more components of the workpiece and a welding monitor for recording variable One or more weld process and location identifier to locate the weld bead formed Monitored weld parameters may include but not limited to voltage and/or current ve via cag AS) Voltage and/or current produced by the power supply : 088 electrode type and/or electrode feed rates flux type and/or feed rates <00; shielding gas type and/or shielding gas feed rates “shielding gas type” welding gas and/or welding gas feed rates; Welding cycle “cycle” direction and/or speed de jw of the welding head; the time; ©all ambient temperature and/or atmospheric conditions dam) date» type of welding procedure; the position of the welding head on the workpiece; interruptions during the welding process; Relate errors (electronic and/or mechanical) during the welding process and the type and/or shape of the workpiece. One or more of these and other Lag AY variables may be stored and/or transmitted electronically to another location and/or printed and/or displayed on a monitor display The locator is designed to locate a specially shaped ve weld bead . This information about the site or site-related variable can then be associated with the EAA

+ in relation to one or more aad weld variants of the formed weld bead. For long Jad and Jie pieces of pipelines, railroads and other large workpieces where the welder moves along the workpiece to weld at several locations; Sa is positioned at the position of All welds relative to a given reference point and the observed weld variables are associated with a relationship of 0 to or associated with a specified location. The registered welding variables and the registered position variable can be electronically stored and/or transmitted (Lis SY) to the AT location and/or printed and/or displayed on a display. Recorded data can be analyzed directly and/or Ga analyzed to display weld parameters at a particular location on the workpiece for quality control purposes.

Gig, To embody AT the locator is designed to detect two or more signals 1. from a relatively fixed location and to account for a location-related variable (Tale) on the detected signals. Preferably the signals are global satellite based and/or land based and in one of the preferred embodiments; Calculates

GPS Satellite Positioning Locator GPS is a multi-satellite based radio positioning system Vo where Ju yy is the satellite A geolocation system has data that allows a specific device to accurately measure the distance from selected GPS satellites and then calculate the position and time variables with a high degree of accuracy using well-known triangulation methods. The signals provided by Gua J} GPS can be received continuously. GPS includes space segments and control segments. The space segment consists of; x. when fully operational; from 71 operational satellites. These satellites are arranged in a constellation so that they usually monitor seven satellites. a minimum of four; by a device at any location on or near the Earth's surface. Each satellite transmits signals at two frequencies known as 11 MHz (YOVO, EY) megahertz and 12 (1.6/77 MHz); using spread spectrum techniques that employ spreading functions. Yo and the two codes Py C/A for pseudo random noise (PRN) with a frequency of 11

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and/or 12. Both the © and C/A codes contain data that enable the receiver to determine

The range between the satellite and the device. The Nav navigation message overlays

on both the P and 8/© code. The message Nav includes the GPS time; Signal

receive handover word used for transition from C/A code tracing to © tracing; data

° JW ephemeris data Tracked private artifact and almanac data for all satellites in the zodiac including satellite health information and ionospheric delay model coefficients for users of the C/A code and transactions used for the account

Universal coordinated time (Guill) The control part includes a station

ye a master control station (MCS) and a number of monitoring stations. Up-to-date ephemeris and time data are transmitted to each satellite for retransmission in each navigation satellite message. Biddy The purpose of the control part is to ensure that the information sent from the satellite is as accurate as possible. The GPS receiver includes an antenna assembly, a radio frequency assembly, and a processor assembly.

processor assembly Vo in the ground positioning system. The antenna assembly receives a GPS signal in band 1 and transmits the received signal to the radio frequency assembly. The RF combination mixes the GPS signal in the DL band until the lowest IF is obtained. and using

various known techniques; The PRN code that includes the signal in the L-band is tracked by attaching the code to a relationship to measure the time the signals were transmitted from the satellite. The displacement is measured as well

© Doppler shift of the received 1-band signal through a carrier tracking loop Code binding to the carrier tracking relationship and function can be performed using analog or digital processing and provides control of the code and tracking loops The carrier by means of the GPS processor combination and by changing this measurement with the reception time as determined by the device clock may determine the false range between the device and the satellite that is

vo follow it. This false range includes both the range of the satellite and the deviation of the device's clock from the satellite

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GPS primary time reference Pseudo-range measurements and navigational data from satellites are used to determine position by calibration and instrument clock diffraction calibration; Indicates GPS time and includes RPC processing and memory functions eg channel status monitoring and control, signal acquisition and reacquisition, code and carrier tracking ° cycles and pseudorange measurement calculation (PR) pseudo range, delta range (DR) delta range, data edge timing determination, acquisition and storage of calendar and ephemeris data broadcast by satellites, processor control, timing and address decoding address, commands, temporary outage events, interrupt acknowledgment control Ve, GPS timing, including navigational processing and memory functions performed by the GPS receiver, for example, satellite orbit calculations Satellite selection, atmospheric delay correction calculations, navigational solutions calculations, clock bias and rate estimates, output information calculation, Vo preprocessing, and coordinate conversion of auxiliary information. when GPS is used to locate the weld bead formed on the workpiece; GPS provides exact location accuracy in latitude and longitude ranging from about 1-0001 metres. Gy, for another facet of the invention coll stores the position variable and one or more welding variables (Lig SY) and/or prints for real-time viewing and/or for subsequent viewing on site © and/or stores electronically for transmission to remote site. Being able to record a single welding lag or AST and correlate such welding variables with the location variable enables the technician to monitor the quality of the weld bead formed periodically without having to be present at each welding location. By reviewing the recorded and/or printed data, the technician can determine which welding parameters are present during the formation of a particular weld bead along the workpiece. The technician may view the data every 1s hour, daily, weekly, or even monthly, and when viewing such data, he determines

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The quality of the weld bead formed at each location on the workpiece. In addition or alternatively, recorded data may be sent electronically via telephone, Internet, satellite, wireless signal, etc. to a remote site for real-time monitoring and/or delayed monitoring of the welding process at specific locations. when welding is performed at a remote location; The ° satellite may be the only means to form a communication link between the welding site and the remote site. Preselected time slots during the day manually UT using a remote location via satellite In addition, the data storage unit may be designed to receive signals from a remote location and to download information that has been stored electronically on demand. By welding (cca) Jl for another aspect, as well as the invention, Gy welding, to receive information from a remote location via telephone, the Internet, satellite AY, wireless signal ... etc. and / or through the technician on site, and thus the information is used The receiver is such that one or more welding variables are modified during the welding process. According to the welding controller one or more welding variables when analyzing the special variable Jal (pals) for embodiment 1 at the site and determining that the welding machine is at the special location. According to another specific embodiment the technician and/or controller at a remote location receives data from the welding machine by telephone, internet, satellite, wireless signal...etc. when determining that the welding machine is at a special location, and sends updated information to the welding controller by telephone, internet, satellite or © - radio signal...etc. to modulate one or more welding variables.Gy For the AT embodiment of the present invention; the workpiece comprises two tubular pieces joined with a recess between the ends of the two tubular pieces and welded together by means of a welding system comprising a welding carriage positioned around the gap formed by the two tubular pieces, a power source for the welding process, a welding carriage current circuit that controls one or more vo variables for the weld during the welding process, and a location device that locates the welding machine

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For a fixed location and data storage device. It is preferable that the tubular pieces be aligned relative to each other using clamps so that at least a weld bead is formed in the space between the tubular pieces. It is preferable that the welding vehicle extends at least 7180 meters around the circumference of the gap, and it is preferable that it extends 0 around the circumference of the gap. The welding cart is designed to slide along the rail when it moves around the circumference of the gap, as the rail is fixed around the circumference of the pipe. The welding cart includes a drive motor to move the welding cart along the rail around the circumference of the gap at a desired speed. If an electrode is used during welding, the welding carriage includes a mechanism for moving the spent electrode in a controlled manner towards the gap during the welding process. The electrode movement control mechanism may be combined with or separated from the mechanism for moving the carriage around the gap during welding in a controlled manner. A location device is designed to receive two or more radio signals to calculate the location of the weld bead formed with respect to a particular location. The data storage device is designed to store one or more welding parameters during the welding process and a location variable.

location parameter from the positioning device. According to another aspect of the invention (Lad opal) the welding current circuit includes a first circuit to control the current flow Ala current flow short circuit where the molten metal Ji at the tip of the core electrode is mainly supplied to the pool Molten metal between the gap due to surface tension ©90:56. The transfer current includes a pinch pulse with a current (le) through the molten metal tad A, which helps facilitate the transition of the molten metal from the electrode to the pool Pall ve The welding current circuit also includes A second circuit to generate a hostile current, and the melting current is a pulse of high current passing through the arc, which is preferred to have a predetermined amount of energy or wattage used to melt a fixed size Lowi of metal at the tip of the core electrode benefited when the electrode is removed from the weld pool.It is preferable that the second circuit of the welding current circuit be designed to provide a high energy boost vo during the initial portion of the arc welding condition.It is preferable that be for big promotion

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1 or energy to melt a relatively constant volume of metal on the tip of 16 area Gila for a specified area of 10 current when the wire is removed from the weld pool. It is preferable to keep the current consumable wire over a period of time until it sheds a high amount of GY for a predetermined period of time and then a desired energy or wattage capacity of the electrode to melt the desired size of the electrode is lost; initial high current plasma boost The initial current dle after the plasma welding reinforcement current is 0. It is also preferable to design the welding current circuit to determine the amount of energy directed to the electrode to prevent current during welding bead formation and / or to maintain the workpiece from unnecessary melting of the workpiece during welding, which This leads to preventing the molten metal from decreasing the quality of a hot welding bead Tax. It is also preferable that the welding current circuit include a circuit to produce a back current.” © 1460 area The welded area and the back current is a low-level current kept at a level background current 01 is higher than the level needed to support a bracket after the short-circuit condition is finished. It is preferable to deliberately keep the back current during welding. Way to ensure that the arc does not occur during the welding cycle. The workpiece and the location of the weld bead formed determined by welding parameters. ve of the present invention in supplying a welder stores one or more welding variables AT and the objective of during welding bead formation on the workpiece and the location of the weld bead formed determined by A further objective of the present invention is to provide a welding system that locates a weld bead formed on a workpiece by receiving two or more signals from a relatively fixed location and calculating the location based on the received signals. . To specify the GPS of the present invention to provide a welding system using Al and also the objective of the location of a formed weld bead. Another objective of the present invention is to provide a welding system that transmits information about the weld and corresponding information about the location of the weld bead to remote locations

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To reach the Tae of the present invention in providing a welding system that provides AT and the objective of welding information and corresponding information on the location of the weld bead from remote locations is provided. Another objective of the present invention is also to provide a welding system that enables real time display Or review the delayed quality control of the welded workpiece. Another objective of the present invention is to provide a welding system that ensures economically feasible quality control for welding operations in remote and/or undeveloped areas. The present invention is to supply a short-circuit arc welding system AT is the electrical objective and method of forming a high quality weld bead between two metal plates. The present invention is to supply a short circuit arc welding system AT objective Jd correctly during welding of two all electrical plates and a desirable method for tracing the diagram Lateral - Other objectives and advantages will be evident from the following description by reference to the attached drawings. Brief explanation of the drawings of the present invention using the Gay system. Pipeline extension 'and 'pipeline?': A diagram illustrating the process stages of a welding system. Ja The detailed description is for illustrative purposes only of the preferred embodiments of the invention and not for cn 3 and with reference to the figures which are together in a tubular network and for defining 71 For welding tubular parts 01 Welding system 1 An enumeration of the figure shows © 718 along the tubular network. The tubular pieces 71 show the location of the weld bead formed. The welding circuit described SURFACE TENSION TRANSFER as a surface tension transition with this type of welding in the US patent control arrangement and control arrangement vo

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“Except for the latest rt and cf AVY,0TE ©, 1, FYT (0, EA, numbers mentioned in this release for reference. £,VV VAY power supply on Yo dye power supply) For welding parts 01, and the welding system includes, and it is preferable that it includes a D.C. source. power supply “? current alternating current is used by the rectifier to produce a continuous phase controller, and a phase controller (D.C. current) is essentially regular. Then the direct current is directed to a modulator of pulse amplitude, and the forms of pulse amplitudes are controlled by a modulation circuit. Pulse width modulator For creating a desired pulse with DC. It is understood that it is not a shaping circuit 01 but can be any rectified output necessarily the power source 7; the output rectifier is suitable for DC. DC current is drawn from an amplitude modulator Calculation through AT source Xo and tube piece © 0 Welding area including a spent core electrode between ©0 The current supplied to electrode 01 and back to welding the tube piece and the arcing condition Yo Short circuit condition when the electrode 00 engages with the tubular pieces ye The arc condition; The molten state at the tip of the electrode as soon as it is fed into the tubular pieces for a subsequent short-circuit state. The YY edge is on the edge of 01 each tubular segment includes oO and with reference to Fig. 9 two tubular segments have a Laie groove It forms a groove beveled surface Mile Galan YY edge tightly adjacent to each other. When two tubular pieces are placed adjacent to each other, the tubular edges are spaced so that a recess is formed. between the tubular flanges. Preferably using lee clamps, the tubular flanges are placed and cig yee is clamped to apply Gy, until at least a root bead forms on the notch between the tubular flanges; which fills cclamps ve

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Between the arc circuit, the JLSY arc circuit, and the pipe ground. A ground spool tube loosened from the electrode and pulley 5 * 0 and the electrode 71 and the tubular pieces 00 electrode is interlocked between the two ends of the tubes by means of the YE electrode nozzle towards the gap Gea ge OY and during the welding cycle ; The electrode is fed through the electrode nozzle £2 to transfer the molten metal .44 m at the tip of the electrode to the gap between the ends of the two tubes to form a bead

To solder is an exhausted heart electrode that includes a metal core 500. The electrode is preferably to form the electrode core and the outer metal sheath is another specific type of stainless steel or steel. Carbon steel does not rust for the electrode from carbon steel, and it is preferable to choose the composition of the metal wear so that it is a metal alloy or a 0 metal alloy, and it is preferable that it includes a 01 base metal component similar to the base metal component. and/or alloy and metals. The fluxing agent in the electrode core may include fluxing agents over the weld bead to protect the weld bead to slag to form slag compounds upon which the compounds harden; To hold the weld bead in place until it hardens and/or to screen the weld metal during weld bead formation on components producing dS flux blocking gas. Flux may include Vo to protect the weld bead from negative ambient effects. It is preferable that the shielding gas to form a shielding gas during the carbonate and/or carbonate fluoride components of the flux include the fluoride of the welding. shielding electrode When a self-blocking electrode is used, 0 is external. The slag formed on the weld bead is also obscured from the surrounding medium © and it is preferable to have quality weld beads, which leads to the formation of quality weld beads in the heart of the electrode. The alloying agents are chosen so that, together with the composition of the alloying agents, the alloying metal coating of the electrode forms a welding bead that has a composition essentially similar to the metallic composition: 1. For EAA tubes

Vo

It includes a desirable current profile to cause low spatter during welding

To prevent the weld bead from passing through the gap and into the tube network on a disc part

¢pinch portion plasma boost portion

The background portion (Als) is where the arc is conserved. The plasma boost portion includes a portion

° Decaying portion denoted by La DU and after the decaying portion; circuit is transmitted

Welding to a back current level that sustains the plasma or arc. And the welding circuit maintains

A limiter level of current Gla, lal, which prevents the current level through the arc from falling permanently below the specified low current level, Gla, and allows the arc to be extinguished. The welding circuit is designed to produce JS electrode melting through the plasma booster part and the plasma part of the welding cycle. no

0 Additional melting of electrode 500 occurs when it reaches the back current level because it can

Obtaining the necessary infrared (IR) radiation to melt the electrode through

An arc that can only be maintained by a back current. So only back current works on

Maintaining the bow and ball of the molten metal in the molten state. and chooses the amount

The molten metal at the electrode tip.© which is formed by the plasma-enhanced part

Vo and the plasma fraction for melting a specific volume Ge of the molten metal at the electrode tip;

JS 1S, Plasma fraction from stream to back stream once specified volume is obtained

already. The time period of the plasma-enhanced part and the plasma part are also selected to prevent non-fusion

necessary for the metal around the two ends of the tubes 77. Over melting of the metal may result

This causes the seeping of molten metal to seep into the tubular pieces. And during the formation of the metal ball

- Molten” jet forces repel all the molten metal from the weld pool to the current

The specified amount, Gla, of the molten metal should be melted at the tip of the electrode. Once low

Lal It is possible for the molten metal to form into a ball and for the molten metal pool to be formed into a ball

The gap is to settle, allowing for a slight contact between the spherical ball in essence and the pit

dampened weld metal. The desired amount of molten metal is controlled at one end

vo electrode by directing a specified amount of energy, Gla, or power in watts, to the electrode through a section

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Plasma from the welding cycle. During a period of time, the ball of molten metal is formed at the tip of the electrode; The core components release screen gases to screen the molten ball and weld metal in the gap from the surrounding atmosphere. The blocking gases continue until the molten ball has moved to the molten metal in the gap. Once the molten ball has formed during the plasma booster and plasma booster portion of the welding cycle; The molten ball is pushed into the molten pool by feeding an electrode into the pool; Which constitutes a short circuit condition. And when the ball of molten metal entwines the pool of molten metal; It is transmitted to the pelvis by surface tension. This action causes final necking down pads of the molten metal extending between the basin and the electrode wire, then a rupture and separation of the ball from the wire. Since there is only a low back current during separation, no or very little splashing occurs. It is preferable to monitor the waist of the molten metal ball so that when the diameter of the waist decreases rapidly by means of electric pits, the current flow during the pinch curve increases more gradually until a detection of imminent melting is achieved. Once an imminent meltdown is detected; The current decreases to back current until the molten metal at the tip of the electrode moves to the Um yo weld. The welding cycle that repeats several times per second should be precisely controlled by a welding circuit to reduce spatter during the welding cycle. In the preferred embodiment the operating frequency of the pulse width modulator controller is 0 kHz with the amplitude of the subsequent current pulse being determined by the current shape controller 7 and the current changing required to cycle welding at a rate of 7,700,001 times per second. Since the highest welding cycle rate is usually close to 01-500 cycles per second; Several update pulses are supplied during each welding cycle. Referring to Figure 0, provide a welding monitor Halll 01 that monitors one or more welding variables during formation of the Fe weld bead and preferably the Yo 0 welding monitor monitors the current fed to the 0© electrode and the feed rate rate electrode 0©; and the total amount of EAA

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at which a bead travels velocity during each welding cycle; The speed is 00. The power is fed to the electrode and additional welding variables can be monitored. In addition 71. Welding around other tube pieces inspection instruments and/or sensors The data from the sensors can be monitored on a display 01 and the welding monitor includes Ur with a monitor Welds which historical data and/or real-time historical data allow the technician to view in real time as well as the Te 260 being or are being monitored with a welding monitor. The welding monitor includes 0 availability Change one welder variable or 6 data entry arrangement by a technician (b) display different data on the display screen; 50 welder AT more to (c) access historical data and (c) d) Activating or deactivating a TY welding control program, preferably where the operations device or some other specific type of operation welding control program 1 Welding Control 70 includes one or more components of the welding cycle that control the feed current to 0.5 The electrode data storage device contains a data storage device Te and includes a welding monitoring device to store part or all of the monitored information. It is preferable to store one or more welding variables, and it is preferable to store a sufficient number of tape or a disk drive recording tape on the means of rotating the ve cylinders formed between the two ends of the welding variables, so that the technician can review the quality of the welding bead

The two tubes also contain a geographic positioning circuit 01 and the welding monitoring device is included and the positioning circuit includes a Fe antenna for the weld bead formed geographic position and a GPS reference receiver GPS processing unit and a reference information receiver from 17 antenna Y. on any TT to calculate the location of the weld bead formed. The antenna may incorporate a commercially available microprocessor. The receiver of Jow-gain antennas may design a number of low-gain antennas to determine the ground location of the welding bead system formed by GPS reference information by detecting longitude and latitude signals with respect to latitude. Monitor memory unit and supply Ar memory unit from satellites 01 signals Yo

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Recording the transmission date of the GPS unit to store information about the locations provided by the welder 01 unit and includes the information corresponding to the location information on latitude (GPS) to provide information about the time Te in the welding monitoring device clock and ground length. To a remote device and/or from a remote device to a weld monitor Preferably placed in a satellite transmission unit Telephone system Telephone device known in GPS Weld monitor to deliver data to a location The operation of a circuit follows the technology and will not be further described. The operation of the welding system will be briefly described. oF, now returning to Figure ve, includes and/or loaded. The welding circuit controls the bead formation of the welding circuit on Defined Welding Parameters Store Ve Welding Parameters Ye Welding Monitor on 700 tube pieces monitors different welds during weld bead formation. The welding monitoring device also monitors and stores information that

Odds are supplied by the probes and other probes used to form the tube network. Observed information; A way to rotate the cylinders is preferred. Once the weld bead is formed, Vo 701 GPS satellites are preferred. The positioning circuit detects the signals. Three or more signals are detected and processed to determine the ground location of the formed weld bead with respect to latitude and longitude. . Position information is associated with the monitored variables and stored on the cylinder drive. And the stored site and the corresponding monitored variables can be viewed directly or later on site or at a location far from Ye radio waves or satellites. Information recorded at the site and/or at a remote location to determine the quality of the weld bead formed at a specific location along the pipe network. After reviewing the data, the technician can enter new weld parameters to form a future weld bead and/or to address a problem with an already formed weld bead.

The ability of the welding system to provide information on how a weld bead is shaped and the location of that weld bead along a tubular network; The technician is able to monitor welding processes on a global scale and to ensure quality weld beads are formed. The recorded information may be used to identify future bead failure problems and/or to remedy a pre-formed weld bead problem. The invention is described by reference to a preferred embodiment and alternative forms thereof. He will realize that many alternative variations and changes to the embodiments described will be readily inferred by those skilled in the art on reading and understanding the description of the invention. The invention includes all such modifications and alternative forms in so far as they fall within the scope of the present invention.

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Claims (1)

Y. The protective elements together include: plates for welding two plates welding system 1-1 welding system for supplying heat to the two said plates for forming a welding bead welding head Y ¢Lagin bead 7 one welding parameter for monitoring a welding variable b) a device for monitoring the weld ¢ ¢ and fwelding bead at least during formation of said weld bead ° in order to locate the detection of several signals (C) Sensing circuit 1 generated from a relatively fixed position and to locate the electromagnetic signals y formed in the aforementioned welding bead A where the sounding circuit detects 1 according to the welding protection element system Welding system 1 1 global satellites mentioned about several signals from earth satellites sensing circuit Y of the welding bead Tatitudinal and longitudinal latitude and determines a ground position on the meridians Y formed mentioned welding bead ¢ where Registers welding variable Y or 1 of protection element Gi welding system ?- welding system 1 electronically. ana dl at least one named observer and position welding parameter Y sends variable 1 to 1 According to any of the protection elements of the welding system —¢ 1 at least one mentioned controller and electronically defined location welding parameter Y to a remote location. to ; where variable 1 of the protection elements of the YG welding system —o 1 the said controller includes a variable that chooses from the group consisting of welding parameter Y AA to ¥ The amount of voltage across the electrode, the amount of current through the electrode, the amount of voltage produced by the power supply, the voltage profile, the amount of current produced by the power source, and the current profile 1, the amount of power directed to the electrode, the rate of power directed to the electrode 7, the type of electrode, the electrode feed rate, the flux type A, the flux feed rate, and the shielding gas variety gas type 4, shielding gas feed rate, welding gas type, welding gas type, welding gas feed rate 01, welding cycle, welding head movement direction, welding head speed rate 1, time, ambient conditions, date, method type Welding, power source type, \Y type of welter type, type of welding components, position of the welding head VY on the workpiece, electrode polarity during JL all and interruptions Ve in the process Welding and electronic errors during the welding process Vo and mechanical errors during the welding process and the type of work piece and the shape of the piece 1 workpiece. 1 4- The welding system according to any of the protection elements from 1 to ©, where it includes Y a welding circuit that includes a first circuit to form a transfer current r and a second circuit To form a melting current so that the said second circuit ¢ provides a sufficient amount of current to the said electrode to form the said welding bead on the two mentioned plates. 1-1 The welding system according to any of the protection elements from 1 to 1, as it includes Y welding circuit that generates a series of small current width Y pulses. 5 It controls the polarity of the current pulses between a first polarity, where the said electrode is positive, and a second polarity, where the said electrode is negative. EAA YY short circuit JE with a part of the welding cycle ° plasma arc melting portion and a short circuit transfer portion "1 so that all the current pulses in the said cycle have a certain polarity of the electrode v mentioned in relation to the two aforementioned panels. A where it includes 1 to 1 according to any of the protection elements of the welding system - 1 mentioned about the welding head prepared to move the welding head welding carriage Y-welding carriage between the gap of the outer circumferential surface of the two said panels and along the y-gap of the two said panels. Including dua A to 1 according to any of the protection elements of the welding system 9 1 the aforementioned weld bead to form a consumable electrode Y electrode where the electrode is 01 according to claim 9 or welding system 1-1 -self-shielding electrode mentioned is a self-shielding electrode Y which includes 11 according to any of the claims from 9 To the welding system 1 0 to form the aforementioned alloying bead on the aforementioned Y electrode casting components so that they have a composition substantially similar to the welding bead installation of the two aforementioned plates. for YY where VY directs according to any of the protection elements from + to welding system 7 -1 to energy Ww specified I aie mentioned second circuit 7 welding The aforementioned electrode is used to melt a relatively constant size of the electrode during each welding cycle : .cycle ¢ where 11 According to any of the elements of protection claims from + to welding system 6-1 mentioned above, the amount of energy directed to the mentioned electrode welding circuit determines the welding circuit 7 between the two plates gap Through the molten metal gap to prevent the passage of molten metal v. The aforementioned $ where the VE circuit of any of the protection elements from 6” to the aforementioned Gy welding system —Yo 1 reduces the amount of current directed to the aforementioned electrode before the welding circuit of the aforementioned Y The aforementioned electrode is a short circuit condition molten metal The molten metal forms 1 with a gap between the two plates mentioned. - 1 alternating current mentioned welding circuit Y according to any of the protection elements from > to where the said welding system 1 1 STT forms part of the welding circuit power source 7 Where VY moves according to any of the protection elements from 4 to welding system A = A 1 the aforementioned electrode around the outer peripheral surface of the two metal plates mentioned and on Y along a gap between the two plates essentially. 1 EAA 1 4- Gi welding system for any of the protection elements from +4 to VA where the said ds 7 welding carriage moves continuously along the mentioned 3 ols pieces and where it may change mentioned welding trolley speed. -001 Welding system according to any of Claims 1 to 14 where the two mentioned metal plates are two tube pieces. 71-1 method for welding two plates together and the mentioned method includes the following steps Y 0) supplying a welding head 7 ¢ (b) moving the said welding head towards the two plates ¢ ¢ (c) forming Welding bead between said two plates; 0 (d) observing at least one welding parameter during the formation of said “bead 1”; and 7 (e) determining the position of said formed weld bead For an intrinsically remote (first) fixed location A——YY 1 Method Gg of protection YY The saving step involves at least one mentioned welding parameter Y and the determined position ¥ electronically 01 7 ?- method Gy of protection element 71 or YY includes the transmitting step of at least one mentioned Y monitored welding parameter and specified location determined location 1 mentioned to a remote site (second). EAA Yo 10 ;?- method Gy for any of claims 71 through 77; Where the aforementioned Y monitored welding variable includes a parameter variable that chooses from the gap, which consists of an amount of voltage across the electrode an amount of current ¢ across the electrode the amount of voltage produced by the power supply ° power supply voltage profile current amount 1 produced by the power supply power supply current “profile 7 Amount of power directed to the electrode electrode A rate of power A rate of power A directed to the electrode celectrode type electrode a rate electrode feed rate flux type flux cfeed rate 01 cshielding gas type shielding gas feed rate 11 welding gas type welding gas feed rate crate VY “welding cycle” direction of movement of welding head 7 crate of speed of welding head VE time of day Bad ambient conditions cambient conditions Date “date Vo” type of welding method type of welding procedure type of source 3,3) type of power supply V1 type i of welding ctype of welder type of components “type of welding components alalll for the position of the welding head on the workpiece the polarity of the electrode during welding interruptions during the welding process V4 electronic errors During the welding process Process 7 - workpiece YY EAA 01 ©?- The method according to any of the protection elements from 71 to YE, where the aforementioned step 7 includes determining the position of the aforementioned formed weld, detecting sensing several Y signals From global satellites 01 +?- The Gig method for any of the protection elements from 71 to (YO) where the aforementioned step includes Y to determine the position of the formed weld Determining the global position 7 of the aforementioned formed weld bead with respect to longitude ¢ and latitude 1 7 ?- The Gis method for any of the elements of protection from 71 to 77 Where the aforementioned Y plates are the two ends of the two pipe sections. pipe sections — YA 1, the method according to any of the protection elements from 71 to YY, where the weld bead forms The aforementioned Y 42 of the consumable electrode YA 01 1?- Method Gay of claim YA or 79; Where the aforementioned electrode is a cored electrode, ml YY electrode The electrode Cus 0 to YA includes the method according to any of the elements of protection from 1-1 weld bead to the composition of the aforementioned alloying components of the Y plates. The aforementioned composition of the aforementioned oY composition. dad includes the step of supplying the FY cart to 71 for any of the protection elements of the method Gig -*7 0 mentioned around the surface welding head working on Moving the aforementioned welding carriage Y. plates for the plates outer peripheral surface and outer peripheral surface speed ie, where the method changes (FY 1) according to the protection element 7 1 mentioned about the two carriage plates Mentioned when the vehicle moves of welding carriage Y (1S plates 1 melting) includes melting step (FY to YA method according to any of the protection elements of —v¢ 1 where it is done in the electric wave step mentioned by Electric wave electrode Y electrode towards electrode preselected energy directing preselected energy melting smelting 1 aforementioned during electrode relatively constant volume aaa melting aforementioned for melting a -welding cycle Each welding cycle ° electric wave where the electric wave (FE) includes the method according to the protection element —Yo 1 background and the aforementioned cbackground current has a Y back current and a high inductance component high inductance HS current 1 short alll after the arc circuit condition ends from the level necessary to support the Lal $ welding cycle that it maintains during circuit condition ° EAA YA limiting The step of determining (FO to YA) for any of the GE protection elements includes the mentioned 1-*” method to prevent the passage of the metal electrode directed at the energy 7 mentioned electrode. plates between the two plates gap through a gap of molten metal ¥ reducing reducing 3 shad including FT to YA for any of the protection elements from Gy method -717 01 mentioned before The metal electrode JY current amount forms the amount of current Y short mentioned from the short circuit mentioned electrode on the molten metal electrode ¥ the mentioned plates between the two plates a gap with a circuit condition ¢ Where the electric wave is FA to YE for any of the protection elements from Gy the method YA . The alternating current mentioned is an alternating current electric wave Y where the electric wave FA to YE forms the method According to any of the protections of -T 00. STT power supply STT mentioned by electric wave Y moving power source includes moving step “V4 to YA method according to any of the protections of 6 1 outer Almvncor Essentially around the peripheral surface of the peripheral surface, the Y electrode, between the aforementioned gap and along the gap of the metal plates of the two metal plates, peripheral surface 1. for