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7598475 |
Arc welding control method and arc welding machine
An arc welding control method for repeating alternately a short circuit period allowing a welding wire to short circuit with respect to a member to be welded and an arc period allowing arc...
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7576299 |
Generator for arc welder with high power factor
A generator for arc welder, of the type composed of a rectifier stage followed by a PFC stage and by an inverter stage, both of the high-frequency type, the latter stage supplying power to a final...
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7528345 |
Power supply apparatus for welder
A welder power supply apparatus ( 10 ) includes an inverter ( 20 ), which is driven intermittently when an electrode ( 34 ) and a workpiece ( 36 ) are separated from each other and no arc is being...
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7495193 |
Pipe seam tack welding methods and apparatus using modified series arc welding
Welders and methods are presented for short-circuit arc welding a workpiece using a modified series arc welding configuration with two electrodes via a sequence of welding cycles, in which each...
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7397015 |
Metal cored electrode for open root pass welding
A method and apparatus of forming a root bead in a gap between spaced ends of at least one workpiece. The gap includes an open root. A metal cored electrode having a metal sheath and core materials...
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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...
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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...
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7265320 |
Method and system for reducing spatter in short-circuit transfer gas shielded arc welding
A method for reducing spatter in the short-circuit transfer gas shielded arc welding is disclosed. In this method, the resistance changing rate or the impedance changing rate of the welding circuit...
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7244904 |
Metal-protective gas-joint with changeable polarity
A method of gas-shielded metal arc joining using a consumable electrode having an alternating polarity (GMA-AC). A shielding gas containing helium is used to improve process stability and working...
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7227099 |
System and method for improving the productivity of a welding shop
Methods of controlling an arc welding shop. In the shop, several welding torches are used and each torch is supplied with consumable wire. The wire moves at a wire speed and is subjected to an...
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7176410 |
Method of welding motor vehicle elements, in particular tailored blanks
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...
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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,...
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7102100 |
Method used in gas-shielded metal-arc welding
The invention relates a method for gas-shielded metal-arc welding during the re-strike during the welding process. It is object of the invention to provide a gas-shielded metal-arc welding method...
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6995338 |
Method and apparatus for short circuit welding
A method and apparatus for short circuit welding includes providing welding power suitable for short circuit welding, sensing the stick out length, and adjusting the welding speed, such as wire...
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6933466 |
Method and apparatus for arc welding with wire heat control
A method and apparatus for controlled short circuit welding includes providing welding-type power and controlling the welding-type power to be controlled short circuit power. A user selectable heat...
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6906284 |
Arc welding method
The present invention relates to an arc welding method in which generation of spatters can be suppressed while the use quantity of gas to be supplied to a welding portion can be decreased. A...
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6872915 |
High speed carbon dioxide gas welding method
An arc welding method which suppresses sputtering and which makes it possible to obtain a smooth bead penetration surface shape as in MIG or MAG welding, without producing undercuts or bumping...
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6849828 |
Method for regulating and/or controlling a welding current source with a resonance circuit
The invention describes a method of controlling a welding current source ( 2 ) having a resonant circuit ( 27 ), whereby a bridge circuit ( 28 ) is controlled by a control system ( 4 ). A consumer,...
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6831250 |
Method for calculating shape of bead of welded part
A method for calculating the shape of a bead of a welded part by solving the problem of multiple solutions when the shape causing a recess or undercut in the flange is determined by calculation....
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6801443 |
Power supply with snubber circuit
A method and apparatus for providing welding-type power supply is disclosed. It includes an inverter power circuit, a bus inductor, a snubber circuit a snubber capacitor voltage feedback circuit,...
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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...
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6730875 |
System and method for estimating true heats of welding processes
An arc welding apparatus ( 10 ) for performing a waveform-controlled arc welding process includes an arc welding torch ( 14 ) that interacts with an associated weld. A power supply ( 12 ) applies a...
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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...
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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...
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6713721 |
Method of designing and manufacturing welding-type power supplies
A method of manufacturing a plurality of welding-type systems, and the systems, are disclosed. The power supplies are each suitable for at least one of a plurality of processes, and have “N”...
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6710297 |
Method of detecting a welding voltage
The invention describes a method of detecting welding process voltage, whereby the welding process voltage between a welding torch ( 10 ) and a workpiece ( 16 ) is detected and the welding process...
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6703585 |
Arc welding quality evaluation apparatus
An arc welding quality evaluation apparatus for consumable electrode gas shielded arc welding comprises a heat input detection means 8 for detecting heat input applied to a workpiece to be...
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6653596 |
Fuel cell operated welder
An electric arc welder powered by a plurality of liquid organic fuel cells. The fuel cells use a methanol/water mixture as the organic feed. The fuel cells produce carbon dioxide as a reactive...
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6653595 |
Method and apparatus for welding with output stabilizer
A short circuit arc welding system is disclosed. The control scheme uses a current command signal to drive the output current. The command signal is comprised of a long-term current command that...
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6653594 |
Consumable electrode gas shielded arc welding method and apparatus
A gas having an arc current-voltage property that is different from a shielding gas is intermittently added to the shielding gas, an arc current is intermittently changed in proportion to an...
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6642483 |
High-speed CO2 gas welding method
A welding voltage is determined based on an expression, P=k 2 ×Vw 2 +k 3 ×Vw, where, with a welding wire feed speed and a welding wire radius used as inputs, a power factor is P(kW), the a...
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6639183 |
Method for attaching parts together using gas metal arc welding
A method for attaching parts together includes several steps. A metal-core consumable welding wire is obtained in one step. In another step, the parts (such as a ring and a base cup of a cylinder...
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6630646 |
Method and arrangement for gas metal arc welding
The invention relates to a method for preventing the welding electrode sticking in the contact nozzle and a welding power source of the inverter type for MIG/MAG with these characteristics. A short...
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6627850 |
Consumable electrode type arc welding method and device therefor
The welding method according to the present invention is adapted to carry out a welding operation by feeding a welding wire to a material to be welded, and generating an arc between the material to...
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6627839 |
Dual-torch gas metal arc pulse welding for overlay applications
An apparatus and process are shown for the application of welded metal overlay deposits to cylindrical substrates for use in wear, chemical, and temperature resistance. More specifically, this...
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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...
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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...
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6596970 |
Method of determining cable impedance
A method of determining the impedance, inductance, and resistance of the network connecting an electrical power supply to an electric arc welding station including an electrode and a workpiece,...
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6586700 |
Process for the MIG welding of aluminum and its alloys with a shielding gas of the Ar/He/O2 type
For MIG welding, either in a spray mode without current modulation or in a pulsed mode, of aluminum and aluminum alloys, with the use of a gas shield for at least part of the welding zone, the gas...
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6573475 |
Welding power supply with output inductor
A method and apparatus that provides welding-type power is disclosed. It includes a power source, a welding output, an inductor winding and an auxiliary winding. The inductor winding is in...
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6549441 |
Voltage switch-over device
The invention relates to a voltage switching device ( 23 ) consisting of a power rectifier ( 26 ), a boost chopper ( 34, 35 ) having at least one storage element ( 50, 51 ), a transformer ( 40 ), a...
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6548784 |
Controlled output for welding
A method and apparatus for welding is disclosed. It includes a source of power and a controller. An output feedback circuit provides feedback to the controller. The controller includes a comparator...
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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...
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6531684 |
Method and apparatus for welding and control
A method and apparatus for welding includes one or more of a welding type power source, a feedback circuit, a wire feeder and a controller. The controller preferably has an eta control circuit...
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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...
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6512200 |
Welding control system
A system 11 for controlling an arc welding system 10 operating in a dip transfer mode is disclosed. The control system is operative to control the current output from a power source so as to...
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6501049 |
Short circuit arc welder and method of controlling same
An electric arc welder operated to perform a short circuit process with a first waveform controlling a short condition followed by a second waveform controlling an arc condition, wherein the welder...
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6498321 |
System and method for controlling an electric arc welder
A control system for an electric arc welder performing a welding process between an electrode and a workpiece, which system comprises: a high speed switching type power supply with a controller...
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6479794 |
Engine driven welding power supply with dig circuit
An engine driven welding power supply including a welding output winding, and a dig output winding is disclosed. The welding output winding has a welding output with a welding V-A curve of a first...
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6479791 |
Dynamic voltage sensing with failure indication
A method and apparatus for welding is disclosed. The welding system includes a power supply and a controller. The power supply has a control input and a power output. The controller has a control...
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