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Topic: Welding power supplies

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	Welding power supply with short circuit protection - Patent 5073695
		Furthermore, lack of reasonable access to the AC power lines and/or the impracticality of or undesirability of moving the prior art power supply sometimes creates a situation wherein the prior art power supply is substantially removed from the welder and a long run of welding cable is required.
		Because each weld selector station unit is supplied from a higher voltage source than most conventional welding equipment, the weld selector station may be connected the main power supply via smaller gauge cabling than that normally used to connect a weld torch to a conventional 40-volt supply.
		Weld selector station 16 may be briefly described as a high efficiency, overload protected, selectable constant current or constant voltage switching power supply with automatic compensation for input voltage fluctuation, and selectable low frequency pulse, high frequency pulse, and chopped low frequency pulse outputs.
	www.freepatentsonline.com /5073695.html (18380 words)

	Method and apparatus for producing welding power - Patent 6278081
		The output of this power supply is at a frequency equal to the input frequency.
		Another aspect of the invention is a method of producing submerged arc welding power comprising by receiving a three phase input power at an input frequency and converting the input power to single phase output power having an output frequency that is greater then the input frequency.
		This welding power supply is a submerged arc welding power supply and should be capable of operating in a CV mode.
	www.freepatentsonline.com /6278081.html (5131 words)

	arc stud welding - Midwest Fasteners: Ohio
		Typically welding power supplies are of the direct or DC current variety, or generate from transformer rectifier power sources.
		The arc weld or arc stud weld is characterized by high heat or weld arc, applied by the stud gun for a short period of weld time.
		Stud welds develop high strength in this short, automatic process due to the stud welding equipment and nature of the process whereby an alloy is formed during stud welding between the weld stud and the base metal it is stud welded to.
	www.midwestfasteners.com /arc-stud-welding.htm (240 words)

	Arc Machines, Inc., Orbital Welding - Pharmaceutical
		In these cases, the power supply can record project management data-such as weld identification number, type of piping system being installed, and the building in which the weld was made-and supply it to QA in electronic format without the need to re-enter the data manually.
		Some new orbital welding power supplies eliminate the need for an external chart recorder by capturing weld data for welding current, pulsation, arc voltage and travel speed; displaying it in real time on the power supply screen during the weld; and showing an information chart on the screen shortly after the weld is complete.
		A power supply can detect gas flow to the weld head, but an oxygen analyzer connected to the tube outlet is necessary to determine when it is safe to start the arc.
	www.arcmachines.com /appPages/PWAMag022004.html (1511 words)

	Inverter Based Welding Power Supplies for Welding Aluminum \| Lincoln Electric
		Then it is fed into the inverter section of the power supply where it is switched on and off by solid state switches at frequencies as high as 20,000 Hertz.
		The other significant advantage of inverter power supplies is that, by "choppingup" the incoming AC so finely, we end up with a very steady DC, without the typical 60 Hertz ripple.
		Very early GTAW power supplies supplied a simple sine wave output where equal amounts of electrode positive and electrode negative were generated.
	www.lincolnelectric.com /L/D32E4C668E6BAFEDE6BB117BF5/65450/H (1326 words)

	Arc Machines, Inc., Nuclear - Consolidated Edison Company of New York, Inc.
		These tests require the documentation of test conditions and weld parameters for the welding of test coupons which are subjected to tensile tests to test the strength of the weld and to bends of the root and face of the welds to assure that the welds are ductile.
		The first welds coming off the drum were made between SA 192 carbon steel, Grade B, 1-1/2 to 1-5/8 inch OD, 0.185 wall tubing to SA 106 carbon steel, Grade C nipples, with a maximum carbon content of 0.025 wt%, and a wall thickness of 0.440".
		The welding operators are shown using a mirror to observe the weld joint 4" from the floor being performed on the lower front drum nipples.
	www.arcmachines.com /appPages/coned02.html (2500 words)

	Advances in wire-feeder technology
		New wire feeder technology, combined with digital welding power sources for robotic welding, is reducing cycle times through improved start/stop times for arcs, and enhanced reliability and process control.
		In short-circuit welding, current is applied to melt the wire, and it is cut back to a low level when the short circuit occurs and wire transfer takes place.
		Power Supplies Welding power supplies take alternating or direct current from a power line or portable generator and convert it to current usable at the welding arc.
	www.weldingmag.com /323/Issue/Article/False/13733/Issue (2303 words)

	WELDER, thermocouple welders, spot welders, pneumatic welding DATA
		The resulting weld pulse is of extremely short duration (.0005 to.002 seconds) and has a very high peak current of several hundred to several thousand amps depending on the capacity of the power supply and the materials between the electrodes.
		AC Power Supplies- for resistance welders take the line current, regulate the time it is turned ON, control which part of the AC sine wave is turned ON, (phase shift) and also transform the line voltage down to a low working voltage, usually not more than about 7 volts.
		Since this type of power supply draws its power directly from the AC line there is effectively no limit to the cycle rate.
	www.ewaldinstruments.com /welderdata.htm (964 words)

	Magnatech: Articles--Recent Developments in Orbital Welding Equipment
		Changing parameters during welding required the operator to turn the dials on a remote pendant control at precisely the right moment, demanding a high level of skill and attentiveness.
		This sample printout illustrates the ability of microprocessor-based controllers to monitor parameters during welding, compare parameters to preset limits, and issue reports that show deviations that occurred during the weld, location of the deviation in the weld, and the type of deviation, along with the magnitude of the deviation from preset values.
		However, each head can weld only a finite range of tube and pipe sizes, radial clearance depends on pipe o.d., and the heads are not water-cooled, limiting their use on alloys requiring preheat.
	www.magnatech-lp.com /articles/turnofcentury.html (2228 words)

	RobotWorx: Miller Welding Power Supplies
		RobotWorx is proud to be a Supplier For Miller Power Supplies
		The Bobcat engine driven welding generators are the industry standard for quality, value, and reliability.
		This drive is a welder’s most popular choice because of its multi-process weld output, strong generator power, and #1 rated reliability.
	www.robots4welding.com /miller-power-supplies.htm (410 words)

	[No title]
		Inverter-type power supplies have about a 2-ms response time to get up to 100 A; variation from peak-to-peak is only about 5 A. Single-phase thyristor-type power supplies typically have a 80-ms response time, and three-phase thyristor-type power supplies typically have a 13-ms response time.
		The peak-to-peak variation on the thyristor-type power supplies may be as large as 40-100 A. The faster response time of an inverter-type power supply results in easier starting, less variation in droplet size, more cathode action off the end of the arc, better penetration, and smoother appearance.
		The values for reactive ant total power for the proposed welding power supply were determined from discussions with a manufacturer of high efficiency power supplies.
	www.engr.colostate.edu /IAC/word/effweld.doc (624 words)

	Current and reliable Welding Power Supplies news stories
		Welding Power Source can be used in multiple applications.
		Welding capacity is delivered by Robin/Subaru® overhead cam engine, or Honda® overhead valve engine, both rated at 9 hp.
		Enclosed in tube-frame roll cage, Power Arc can be carried by 2 people anywhere power or welding is needed.
	news.thomasnet.com /news/3257 (1574 words)

	American Welding Society - Welding Journal
		Both must be able to support the tooling fixture and parts (load) for welding, and provide a suitable current return path to the welding power supply.
		Robotic welding power sources are sophisticated pieces of equipment that require suitable weld ground circuits to ensure proper feedback and optimal performance.
		Robotic welding positioners generally are rated by their capacity to support and manipulate the load, which includes both the weld tooling and the part.
	www.aws.org /wj/july03/feature1.html (1779 words)

	Power Supplies, Micro Resistance Welding, Resistance Welding - Micro Resistance Spot Welding Technology From Macgregor ...
		Output of Welding Current: The welding power supply is used to provide the weld energy required for the welding operation.
		A process driven control loop allows the power supply response to process variations to be near instantaneous.
		The m2 offers a similar power control system to the m3 and is fitted with an alpha- numeric user interface in conjunction with high and low limit monitoring.
	www.macgregor-systems.co.uk /3-1-1.asp (684 words)

	EECS Research Page
		Welding Automation Research in the engineering school is largely focused on problems involving sensing, modeling, and control of welding processes, i.e., welding automation.
		Welding generally involves the application or development of localized heat or pressure, or both, near the intended joint to produce a suitable bond between the parts being joined.
		The research on through-the-arc sensing led to an adaptive robotic arc welding control methodology that is now used by virtually all arc welding robot manufacturers in the world.
	eecs.vanderbilt.edu /research/welding.html (483 words)

	AL GMAW: CC or CV?
		The second concern is that a CC power supply gives no current spike on arc initiation, so it’s often difficult to start large-diameter filler wires.
		If the welder pulled the torch away from the workpiece—raising the arc length and arc voltage—the power supply dropped the arc current to burn off wire at a slower rate until the preset arc voltage was re-established.
		CV power supplies gained popularity and continue to be the most common type of power supply for GMAW today.
	www.thefabricator.com /AluminumWelding/AluminumWelding_Article.cfm?ID=613 (1117 words)

	Welding - Course Descriptions
		The student should be able to weld tee joints in the horizontal position using E-7024 welding electrodes as well as single and multi[-pass welds in the vertical-up and overhead positions using E-6010 and E-7018 welding electrodes.
		E-6010 welding welding electrodes will be used on root beads and E-7018 will be used on the fill and cap passes.
		Welding for the Arts II This course is a continuation of Welding for the Arts I. This segment concentrates on the use of Shielded Metal Arc Welding (SMAW) as applied to metal sculpture, auto repair, fence building and theatre set fabrication.
	www.wwcc.cc.wy.us /xwelding/courses.htm (1417 words)

	Welding - Course Descriptions
		The student should be able to weld tee joints in the horizontal position using E-7024 welding electrodes as well as single and multi[-pass welds in the vertical-up and overhead positions using E-6010 and E-7018 welding electrodes.
		E-6010 welding welding electrodes will be used on root beads and E-7018 will be used on the fill and cap passes.
		Welding for the Arts II This course is a continuation of Welding for the Arts I. This segment concentrates on the use of Shielded Metal Arc Welding (SMAW) as applied to metal sculpture, auto repair, fence building and theatre set fabrication.
	www.wwcc.wy.edu /xwelding/courses.htm (1417 words)

	[No title]
		TIG and Plasma welding power supplies are available for higher amperage applications in both manual and automatic configurations.
		A plasma console is also available for integration with many TIG welding power supplies to add the plasma welding process to your process capability.
		The Touch/Retract Gap Setter torch positioner motions the torch electrode to touch the part to be welded and then retracts to an exact arc gap distance programmable in thousandths of an inch prior to each weld cycle.
	www.pro-fusiononline.com /products/weldingsystems.htm (622 words)

	Welding.Com Buyer's Guide - welding, equipment, supply, mig, tig, education, courses, schools (Site not responding. Last check: 2007-10-25)
		Welding positioners, turning rolls and welding head manipulators are also handled to the customer's requirements.
		Manufacturers supplying welded sub-assemblies have an opportunity to lower their production costs and improve flexibility.
		Products manufactured:Arc welding power sources, wire feeders, welding guns and accessories,engine-driven welding power sources and power generators, robotic andautomated welding systems and controls, plasma arc cutting power sources,resistance spot welding equipment, and welder training materials.
	www.welding.com /buyers_guide5.shtml (589 words)

	Welding Power Supplies in Northern Texas on ThomasNet.com
		A broad range of Power Supplies: Welding resources are compiled in this industrial portal which proves information on manufacturers, distributors and service companies in the Power Supplies: Welding industry.
		Company Profile: Distributor of power supplies including welding power supplies.
		Power supplies include fixture type transformers, portable gun type transformers, machine type transformers, transgun & robot type...
	www.thomasnet.com /northern-texas/power-supplies-welding-62681143-1.html (134 words)

	Power Supplies are geared for arc welding., Thermadyne Industries, Inc.
		Units include Voltage Reduction Device to reduce OCV when power supply is not in use.
		All units include a Voltage Reduction Device (VRD) that reduces OCV when the power supply is not in use, eliminating the chance of accidental electric shock.
		Apr 27, 2005 - Power Supply suits welding applications to 500 W. Apr 6, 2005 - Distribution Systems suit preheat welding applications.
	news.thomasnet.com /fullstory/18025 (965 words)

	[No title]
		Shielding is obtained entirely from an externally supplied gas or gas mixture." The electrode wire for GMAW is continuously fed into the arc and deposited as weld metal.
		Electric arc welding is handy for repairing a variety of metal objects around the house, such as wheelbarrows, barbecue grills, fences and gates, and mailbox posts.
		This process is defined as "an arc welding process which produces coalescence of metals by heating them with an arc between a metal stud or similar part and the work piece".
	www.lycos.com /info/welding--arc-welding.html (540 words)

	Power Supplies at Precision Welding Technologies
		PWT's power supplies may be used in aerospace, semiconductor, vacuum processing, medical, nuclear, and other industries where precise, low heat input welding is required.
		We can provide a complete power supply solution with a current source, arc starter, pilot supply (for plasma welding), and welding programming console all in one attractive enclosure - or provide separate stand-alone modules which can be integrated to your existing welding equipment.
		The welding programming console will allow the user to store welding programs for repeatable execution of welding parameters.
	www.pwt-online.com /products/prodPS.htm (511 words)

	Resistance Welding, power supplies, DC1001P Series, Micro Resistance Welding Power Supplies, Micro Resistance Welding, ...
		The DC1001P series micro resistance welding power supply uses the proven and reliable power control components from the DC1000P and combines them with more accurate and advanced electronics.
		This micro welding equipment offers advanced SPC data output and multiple configuration options to allow simple and uniform configuration of the unit for integration into production.
		We also supply the DC601P series resistance spot welding power supply which offers a single phase variant of the DC1001P welding power supply.
	www.macgregor-systems.co.uk /3-1-1-1-2.asp (376 words)

	Pendant control for a welding-type system patent invention
		Weld program or schedule, as used herein, includes set up information and/or output information such as the weld sequence, output duration, output magnitude, and wave shape.
		Even bringing a laptop to connect to the power supply directly is cumbersome and requires purchasing a laptop.
		The controller has a weld program selecting routine connected to the pda and a downloading routine operatively connected to the memory input.
	www.freshpatents.com /Pendant-control-for-a-welding-type-system-dt20060810ptan20060175314.php (1260 words)

	Power Supplies
		The DBZ-100 and DBZ-300 power supplies are both4kHz medium frequency units, offering tight control of the welding parameters.
		The two power supplies offer mill-second precision with medium frequency transformers and inverters.
		Up to 3kA of DC weld current is available and both controls have multi-program capabilities, with multi-pulse welding in conjunction with both up and down slope.
	www.spotco.com /power_supplies.htm (123 words)

	Gas Tungsten Arc Welding - Advanced Technology
		The welding arc is created between a tungsten electrode, which is non-consumable, and the weld pool.
		Because of the shielding and high concentration of heat it is used on refractory and reactive metals which oxidize readily without inert gas protection.
		Modern welding power supplies properly maintained and complemented with necessary ancillary devices.
	www.at-co.com /gtawelding.html (231 words)

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