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THE LATEST ADVANCEMENTS IN PULSE WELDING TECHNOLOGY

Welders and job shops alike are embracing this technology to remain competitive in a changing industry. Does pulse welding warrant all of the attention it receives? Peter Anderson of Thermadyne examines why the answer is yes.

Posted: August 10, 2010

Finally, welding control is literally in the operator’s hands. MIG guns can be standard air and liquid cooled versions, push/pull guns, and smart guns with advanced digital displays. The smart gun has an on-board digital control that allows the operator to control welding voltage, wire feed speed, and wire trim adjustment as well as access 100 programs from the machine and change them on the fly. Each gun uses high-grade consumables for spectacular performance, including tips offering optimal life and current transfer, nozzles tuned for high heat resistance and gas coverage, smooth wire feed liners for all materials, and gas diffusers providing optimal tip cooling and featuring a 12-hole design, giving the operator the ideal amount of gas coverage.

THE BENEFITS OF THE SYNERGIC PULSE
Like each new welding innovation that came before it, digitally-controlled welding takes the best of current technology and improves on it. But never before has a technology truly revolutionized the market in terms of consistency, safety and intelligence like digital. Benefits for the operator include:

Perfect Starts
Digital welding systems can react extremely fast, immediately providing the operator ideal and consistent welding outputs. This has proven helpful with arc starting, and nearly eliminates the momentary short circuiting when the wire initially touches the plate to begin welding. The control system senses the plate, and provides the ideal arc starting parameters instantaneously. This can eliminate cold starts, and lack of fusion at the beginning of welds.

Elimination of Spatter
The reduction of spatter provides several benefits, including more consistent end products and enhanced safety for the operator. Digital welding power sources can deliver more exacting welding parameters, offering smoother bead appearance. The power supply reacts extremely fast to variations in arc length, and changes in material height to deliver consistent arc length control.

Lighter Weights and Lower Power Consumption
Components used to produce digital welding power supplies make them much lighter and electrically efficient. For instance, the PowerMaster 320SP, capable of peak currents approaching 600 amps, weighs in at only 77 lb, and can use nearly 46 percent less energy than older transformer style machines with similar outputs. Many companies have realized substantial electrical costs savings when running these new digital systems.

Enhanced Digital Control When Welding Different Joints
With traditional welding technology, when an operator had a number of different joints to complete on one project, he would typically weld each type before returning to the machine to tweak the variables for other welds. For instance, he would weld all the T-joints, stop, change the machine and then proceed to a vertical up-weld, etc. With digital control and Smart Mig Guns, the operator can set up multiple programs with key welding parameters stored, hit a button on the torch and immediately switch the parameters to weld any joint in any order, saving a considerable amount of time and energy.

Completely Computer Controllable
The digital welding technology can be easily linked to any PC. Once a program is set up on one digital machine and synced with a laptop, the PC can then be connected to different machines in the shop or in the field for simple program downloads. When all machines use the same parameters and variables, each welder on staff enjoys an unmatched level of reliability and consistency, no matter which projects he works on or when he works on them.

More Choice in Digital Options
There are choices to fit the needs of any welding shop and application. Operators can choose from 320 amp to 500 amp systems, manual or automated systems, and air or liquid cooled options. Operators can use a wire feeder on a base machine, a MIG gun, a pocket pendant or a fully-function remote control. So no matter how one chooses to adjust welding parameters or programs, it’s no further than one knob away. That’s added control an operator can’t find anywhere else.

Thanks to advanced digital technology, today’s operators will quickly discover the old way of welding just can’t deliver the reliability, consistency, safety and dependability a shop dedicated to excellence relies on to stay successful.

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