Abstract: A system for welding with a first and second arc between a first and second electrode, respectively, and a common workpiece, where each of the electrodes is driven by a power lead from a single power source. The system comprises an inductor with a core, a center tap, a first end, a second end, a first coil section between the tap and the first end and a second coil section between the tap and the second end where the power lead is connected to the tap. A first circuit connecting the first arc in series with the first coil section and a second circuit connecting the second arc in series with the second coil section, a first separate auxiliary inductor in the first circuit between the first coil section and the first arc and a second separate auxiliary inductor in the second circuit between the second coil section and the second arc.

Abstract: An operating system is provided for an electric arc welder including a high switching speed inverter power source for creating an arc voltage and arc current between an electrode and a workpiece. This operating system regulating the arc voltage to provide a voltage with a slope by using an error circuit to create an error output and having a first input with a signal representing the set voltage and a second input representing the sum of the actual arc voltage and the actual arc current multiplied by a slope constant. A DSP program reduces the error output by adjusting the voltage output of the inverter power source to change the actual arc voltage. The slope constant is in the range of 0–10%.

Abstract: A system is configured to treat a conductive component. The system includes a power source, an interface configured to electrically contact with a surface of the conductive component, and a controller coupled to the power source and the interface. The controller is configured to pass electric current (e.g., electric pulses) from the power source through the interface and the component to melt tips of a set of cracks along the surface of the component. As the current passes around the set of cracks, the current generates localized heating in high-resistance dislocations at the crack tips to repair the cracks. Accordingly, such current heals the cracks and inhibits the cracks from spreading. Furthermore, the effect of the current remains localized thus enabling the current to strengthen the material around the cracks while easily avoiding damaging or weakening other portions of the component.

Abstract: An engine driven welder-type device and method of powering an accessory are disclosed. The device has an engine coupled to a power converter constructed to generate an electrical power suitable for welding applications. The device also provides a relatively uniform power to an auxiliary outlet across a wide range of engine speeds.

Abstract: A welding shield gas comprising an inert gas and nitrogen gas, where the concentration of the nitrogen gas is 1 to 95 vol %; or comprising an inert gas and a helium gas, where the concentration of the helium gas is 35 to 95 vol %; or comprising an inert gas, nitrogen gas, and a helium gas, wherein the concentration of the nitrogen gas is not less than 1 vol % and less than 65 vol % and the concentration of the helium gas is 35 to 95 vol %. This shield gas can be used in the non-consumable electrode arc welding of a welded material consisting of stainless steel.

Abstract: A welding control system to monitor the energy consumption of a plurality of welders. The welding control system controls the operation of one or more welders based upon the energy information received from one or more energy monitoring devices.

Abstract: An ultra-flat non-consumable electrode welding torch which allows performing a welding operation through a narrow gap between adjacent piping such as welding piping of a boiler panel, to be mounted on a compact automatic welding head, and a welding head provided with such a welding torch are to be provided. As a gas supply mechanism that supplies a shield gas to a welding section formed at the tip of the non-consumable electrode through inside of the torch body for the non-consumable electrode welding, a gas supply path is provided for supplying the shield gas from an outer gas space in a double ring shaped gas space provided around a non-consumable electrode and divided by a partition wall, to an inner gas space through a plurality of orifices provided at regular intervals in the partition wall, and the gas is blown from the inner gas space to the region around the non-consumable electrode through a metal mesh plate.

Abstract: The present invention is directed to a remotely controlled welding machine. A remote control uses the welding circuit to transfer information to a welding power source. The information to be communicated to the power source includes welding power source output command information (amperage/voltage control), welding circuit on/off information (power source output contactor control), and power source mode control (constant voltage/constant current). A transmitter transmits the desired welding operational parameters to a receiver disposed in the power source. The transmitter is constructed to use only a small amount of power which, preferably, is supplied by one or two low voltage replaceable and/or rechargeable batteries. Additionally, an open circuit voltage is not created between the power source and an electrode holder when an arc is not present.

Abstract: The present invention is directed to a welding-type power source controller includes an input configured to receive feedback regarding a remote control configured to control a welding-type process. The controller includes a processor configured to receive the feedback and override the remote control if a control irregularity is detected.

Abstract: A safety interlock system for an arc welder is described. The safety interlock system is interfaced with and turns on the arc welder in response to a user pressing a button 15. There may be an optional delay from when the user presses the button until when the arc welder is turned on. The safety interlock system maintains the arc welder operative for a predetermined period of time within which time an arc must be struck. The safety interlock system has a latching circuit 29 responsive to a parameter indicative of a welding operation underway, and will maintain the arc welder operative until the parameter ceases. Once the parameter ceases or if an arc is not struck within the predetermined period of time, the safety interlock system turns off the arc welder.

Abstract: It is an object to provide an arc welding apparatus capable of causing an operator to easily decide a welding abnormality and the quality of a welding condition by simultaneously displaying a welding current command value, a welding voltage command value and a wire feeding speed command value and switching and displaying an actual welding current value, an actual welding voltage value and an actual wire feeding speed. There are provided a welding torch (8), a wire feeding device for feeding a wire (9) in contact with the internal surface of a chip (17) of the welding torch (8), a welding source (4) for supplying a power to the chip (17) and a base metal (13), a welding current detector (30) and a welding voltage detector (31), and a wire feeding speed command value, a welding current value and a welding voltage value are displayed independently and simultaneously.

Abstract: In a welder wand including a welding tip attached to handle with an elongate, rigid conduit, the handle having a trigger for activating the welding tip, improvements therein including an optical light system attached to the welder wand comprising a light source mounted proximate to the welding tip and a switch mounted proximate to the handle, the switch operatively coupled to the light source for selectively activating and deactivating the light source, whereby the light source produces and directs light at the welding tip when activated by the switch.

Abstract: The present invention is directed to a portable welding-type power source including a removable energy storage device configured to provide a first voltage output and a boost circuit connected to the energy storage device and configured to boost the first voltage output to a second voltage output to supply power to the welding-type power source according to a selected welding-type process.

Abstract: A system and method for welding with a first and second arc between a first and second electrode, respectively, and a common workpiece, where each of the electrodes is driven by a single power source, where there is a first inductor connected in series with the first electrode and a second inductor connected in series with the second electrode and each of the inductors has sufficient inductive reactance to store enough energy to maintain an existing arc associated with one of the electrodes for a selected general time with essentially no current to the one electrode.

Abstract: The present invention is directed to a remotely controlled welding machine that uses serializing and modulating circuits to transfer modulated data packets to a welding power source across a weld cable. A transmitter transmits the data packets of desired welding operational parameters to a receiver disposed in the power source across a weld cable also designed to carry welding power from the power source to the wire feeder. The transmitter and other electronics of the wire feeder are constructed to use only a small amount of power which, preferably, is supplied by a DC power supply external to the wire feeder. The DC power supply is designed to provide power to the electronics of the wire feeder when the wire feeder is in a standby mode of operation.

Abstract: Methods are disclosed for rating a welding electrode and/or for ranking two or more electrodes with respect to gas tracking effects in gas shielded flux cored arc welding processes. The methods involve performing a standardized welding process using an electrode of interest to create a test weld on a workpiece with a linearly varying contact to work distance in the process, measuring a distance from the beginning of the weld to a point at which gas tracking is first observed, and rating an electrode or ranking several electrodes according to the measured distance.

Abstract: A welding head employs a carriage assembly for guiding the welding head along a track or guide. A torch assembly, mounted on the carriage assembly, is configurable for multiple welding processes. The torch assembly includes a torch block and a GTA filler wire guide mounted together on a mounting plate, whereby the GTA filler wire guide is placed in general proximity of a welding torch mounted on the torch block. The torch block accommodates the mounting of either of a GMA torch and a GTA torch. Additionally, the torch block accommodates placement of a GMA adapter sleeve within the torch block to feed a filler wire through the GMA torch. A system control unit provides manual, semi-automated, or automated control of welding system resources including a welding power supply, a supply of one or more shielding gasses, and a fluid coolant supply.

Abstract: A method of welding a stud (11) is provided. In another aspect of the present invention, a welding system is provided for a weld stud (11). A further aspect of the present invention employs a weld stud (11) with a substantially conical end section (29).

Abstract: An electric-arc welding process for assembling parts that are components of a motor vehicle, in which a consumable wire is used that is subjected to a cyclic mechanical movement. The wire is moved closer to and then further away from the parts to be welded so as to create a short arc between the end of the consumable wire and at least one of the parts to be joined. In this way, molten metal is deposited in order to progressively produce a welded joint between the parts.

Abstract: An electric arc welder with a waveform generator controlled to create a welding process involving current flow between an electrode and a workpiece wherein the welding process comprises a succession of pulse waveforms, each having a current ramp up portion, a peak current portion, a current ramp down portion and a background current portion, a voltage sensing circuit to sense a short circuit between the electrode and the workpiece and a reset circuit to reset the waveform generator upon sensing of a short circuit. The preferred electrode is a solid wire which may be in the form of a metal cored wire.