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7385159 Output stage for an electric arc welder  
An auxiliary OCV boost circuit for the power source of an electric arc welder to perform a welding process between an electrode and a workpiece, which power source has a main positive voltage...
7358459 Electric arc welder system with waveform profile control  
An electric arc welder for creating a succession of AC waveforms between an electrode and workpiece by a power source comprising an high frequency switching device for creating individual waveforms...
7351933 Method and apparatus for controlling a welding system  
A method and apparatus for controlling a welding-type power supply includes providing a current wave form having an arc current portion and a short circuit current portion. An arc state is entered...
7335853 Method for orbital welding using a pulsed current  
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...
7335852 Method and apparatus for welding  
A method and apparatus for MIG welding is disclosed. When in an ac mode the output is unbalanced, or the balance may be controlled. The balance may be controlled to provide a desired deposition...
7304269 Pulse welder and method of using same  
An electric arc welder for performing a pulse welding process by a current between an advancing electrode and workpiece where the welder comprises a short detecting circuit for creating a short...
7301123 Method for modifying or producing materials and joints with specific properties by generating and applying adaptive impulses a normalizing energy thereof and pauses therebetween  
A method of impulse treatment which modifies at least one specified property of a material or object (such as a welded joint), or produces a material or object with at least one specified physical,...
7288741 Arc welder  
An arc welder comprising: a rectifier circuit 2 which rectifies an alternating current 1 to a direct current; an inverter circuit 3 ; a transformer 4 ; a second rectifier circuit 5 which...
7282668 Electric arc welding system  
An electric arc welding system and method for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding...
7271365 System and method for pulse welding  
Systems and methods are provided for pulse welding, in which a welding signal is provided to an electrode in series of pulse welding cycles, where the amount of energy applied to the electrode in...
7262387 Method and apparatus for arc welding with arc control  
A method and apparatus for providing welding power with an arc-width control is disclosed. The power supply includes a power circuit that provides a welding output characterized by a plurality of...
7256368 Welding and tack welding method involving the use of a non-fusing electrode  
The invention relates to a welding method involving the use of a non-fusing electrode ( 12 ) according to which the electrode ( 12 ) is provided with power from a power source once the arc ( 11 )...
7235760 AC pulse arc welding method  
In accordance with an AC pulse arc welding method, a periodic welding current is applied, that includes, for a pulse cycle, negative current in electrode negative polarity and positive current in...
7173214 Electric arc pulse welder with short circuit control  
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...
7166818 Tandem electrode welder and method of welding with two electrodes  
An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent,...
7148449 Electric ARC welding system  
An electric arc welding system for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding arc with a...
7145101 Pulse arc welding output control method and arc length variation pulse arc welding output control method  
An output control method is provided for a pulse arc welding in which a welding current flows for one pulse period consisting of a peak period with a flow of a peak current and a base period with a...
7132623 Luminescence sensing system for welding  
A method and apparatus can adaptively control a pulsed power arc welding process. A trainable system can recognize an empirical transfer mode from a signal emitted during an arc welding pulse and...
7129443 Method and apparatus for welding with CV control  
A method and apparatus for welding is disclosed. The output is preferably a cyclical CV MIG output, and each cycle is divided into segments. An output parameter is sampled a plurality of times...
7109439 Short circuit arc welder and method of controlling same  
An electric arc welder operated to perform a short circuit welding process between an electrode and a workpiece, where the process comprises a succession of alternate short circuit conditions and...
7105773 Electric arc welder  
An electric arc welder for depositing weld metal along a groove between two edges of a metal workpiece where the welder comprises a first electrode driven by a first wire feeder toward a point in...
7105772 Arc welding system and method  
A welder using a circuit or method of changing polarity of an AC welding current comprising: the generation of a polarity changing signal, commanding a change in the polarity of the current a given...
7102099 Method and apparatus for feeding wire to a welding arc  
A method and apparatus for feeding wire in a welding system include one or more motors disposed adjacent the wire to drive it. A wire feed motor is also disposed along the wire path, and is closer...
7091446 Electric arc welding system  
An electric arc welding system and method for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding...
7091445 Electric arc welder and method for controlling the welding process of the welder  
Electric arc welder ( 10 ) performs a given weld process with selected current waveform performed between electrode ( 24 ) and workpiece ( 26 ). Welder ( 10 ) includes a controller with a digital...
7075032 Power supply apparatus  
An input-side rectifier ( 4 ), a smoothing capacitor ( 6 ), an inverter ( 8 ), a transformer ( 10 ) and an output-side rectifier ( 12 ) operate together to convert an AC voltage supplied from an AC...
7067767 Two stage welder and method of operating same  
An electric arc GMAW welder is provided, which welder includes a high speed switching power supply with a controller for creating a first or second weld process across the gap between a workpiece...
7064290 Electric arc welder and method for controlling the welding process of the welder  
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....
7060935 Power supply for electric arc welding  
A power supply connectable to a source of AC line voltage for AC electric arc welding by an AC arc current across a welding gap between an electrode and a workpiece, the power supply comprises a...
6992264 Welding method and welding power supply apparatus  
An IGBT ( 16 ) intermittently interrupts a current from a positive terminal ( 12 P) of a DC supply ( 2 ) to a workpiece ( 24 ). An IGBT ( 20 ) intermittently interrupts a current from a negative...
6982397 Tig welding apparatus and method  
A TIG welding apparatus comprises; a twin electrode type welding torch 1 having a first and a second welding electrode 1 a , 1 b arranged approximately parallel and either side of an insulation...
6909067 Method and apparatus for welding with CV control  
A method and apparatus for welding is disclosed. The output is preferably a cyclical CV MIG output, and each cycle is divided into segments. An output parameter is sampled a plurality of times...
6870132 Power supply for electric arc welding  
A power supply connectable to a source of AC line voltage for AC electric arc welding by an AC arc current across a welding gap between an electrode and a workpiece, the power supply comprises a...
6858813 Weld overlay system  
A process for applying a weld overlay to a tube with a single pass of a weld head. An inverter-type alternating current pulsed power source, composed of a primary inverter and a secondary inverter,...
6833529 Power supply for short-circuiting arc welding, and automatic welding machine utilizing the same  
A power supply for arc welding includes switching elements PTR, NTR for switching the polarity of the direct voltage from a power circuit PMC. The element PTR is connected in parallel to a series...
6797922 Power supply apparatus for welder  
A power supply apparatus for a welder includes a rectifier ( 104 ) and a smoothing reactor ( 106 ) which operate together to convert a commercial AC supply voltage to a DC voltage. The DC voltage...
6794608 Welding current control system and method  
A system and method for controlling a weld-current in an arc welding apparatus involves programming of a waveform generator to supply a control signal to a weld-current power supply, the control...
6734394 Electric arc welder and controller to duplicate a known waveform thereof  
A system for creating an actual waveform at the output of an electric arc welder and caused by a waveform generator where the welder has a display and customizing screen to design a commanded...
6723956 Pulsed-arc welding process and device  
Process for the arc welding in pulsed mode of one or more workpieces made of carbon steel, stainless steel, aluminum or aluminum alloy, with the use of a gas shield, in which an electric arc...
6717108 Electric arc welder and method of designing waveforms therefor  
A method of designing a series of waveforms for current cycles generated by a waveform generator to control the waveforms of a welding process performed by an electric arc welder, where the...
6700097 Electric ARC welder and controller to design the waveform therefor  
An electric arc welder for creating a welding cycle with a real time current waveform constituting several control parameters by a microprocessor that controls a power supply by a signal so the...
6621049 Welding stability assessment apparatus for pulsed arc welding  
The present invention relates to an apparatus for assessing start-of-weld and steady state welding stability in pulsed arc consumable electrode gas-shielded welding. According to the present...
6617549 Method and apparatus for welding with restrike  
A method and apparatus for welding, and particularly for clearing a short while welding is disclosed. If a short occurs, output current is increased from a first magnitude to a second magnitude and...
6609033 Field programmable welding controller  
Welding controller 1 has CPU 1 a , ROM 1 1 b , ROM 2 1 c and RAM 1 d . Programs and data are written into the ROM 1 1 b and can be rewritten. Sequential welding data is written into the RAM 1...
6600135 Method and apparatus for controlling AC pulse arc welding and welding power source apparatus  
In a method and an apparatus for controlling AC pulse arc welding executed by supplying a welding current flowing between a welding wire and an object to be welded with feeding the welding wire at...
6596969 Method for guiding arc by laser, and arc guiding welding and device by the method  
In an arc welding method and apparatus, a plasma ( 13 ) is generated at a welding intended position on a base material ( 2 ) by a laser ( 16 ) irradiated to the base material ( 2 ). When a...
6534746 Narrow gap welding method and welding apparatus  
A narrow gap welding method by which V-shaped or single-bevel grooved multi-layer build-up welding is carried out, comprises the steps of welding a first layer by applying a welding current by...
6515259 Electric arc welder using high frequency pulses  
An electric arc welder including a high speed switching power supply with a controller for creating high frequency current pulses through the gap between a workpiece and a welding wire advancing...
6455808 Pulse power system  
A pulse power system includes an energy storing device for storing electric energy; a high power arc switch comprising: a cylindrical housing having a central axis and defining a predetermined...
6388233 Method and apparatus for arc welding with melting electrode  
The invention comprises a method and an arrangement for pulsed gas metal-arc welding with an electrode fed to the welding site continuously at a given rate, the fusion conditions being adapted in...
Matches 1 - 50 out of 258 1 2 3 4 5 6 >