TPT July 2018
WE LD I NG
No risk of lost welds with weld purge film LOW-COST weld purging can prove complex, with many welders making savings by constructing their own foam or paper dams in order to reduce the purge volume and make weld purging times shorter. However, such improvised purge dams have technical limitations that can lead to loss of welds when they leak or slip from position, flooding the welding zone with oxygen. Weld Purge Film kits can be used on pipe diameters up to 900mm (36") and for temperatures up to 300°C (572°F) without the material burning, coming loose and losing the weld purge. Weld Purge Film kit
The water-soluble Weld Purge Film allows dams to be cut easily with the safety knife supplied. Once they are fixed into position using the water-soluble Weld Purge Super Adhesive ® , also provided, they produce an impenetrable purge barrier that can easily be washed away during hydrostatic testing of the pipe or by normal wash-out. The kits minimise gas usage and reduce purge time; eliminate the need to clean; and prevent failed welds.
Another technical advantage of using water-soluble film instead of other materials is the transparency of the film dams, allowing the welder to see the weld root as it is being laid. Huntingdon Fusion Techniques – UK Email: firstname.lastname@example.org Website: www.huntingdonfusion.com
To overcome these challenges, Huntingdon Fusion Techniques (HFT) has designed and developed the Argweld ® Weld Purge Film ® kits. Ron Sewell, chairman for HFT, said, “With the use of our low-cost Weld Purge Film, welders can ensure that their dams do not come loose during welding.”
New three-phase welders offer power, performance and mobility
The new models maintain the benefits of other Rebel EMP welders, including a colour TFT-LCD display. “The multi- lingual user interface provides a graphical and intuitive way of selecting processes and setting parameters,” said Mr Freibergs. The Rebel range incorporates ESAB’s sMIG (‘smart MIG’) technology for quick and easy results when short circuit MIG welding. The sMIG function monitors the operator’s technique and continuously adapts to provide a stable arc and repeatable welds. “You can actually hear sMIG fine tune the arc after a few seconds of welding, dialling in that perfect ‘sizzling bacon’ sound that signifies proper welding parameters,” said Mr Freibergs. “This technology reduces downtime when changing parameters, helps train new operators and can improve consistency between welding stations.” The Rebel design is compact with a small footprint, and the machines can hold both 200 and 300mm bobbins. The units can be manoeuvred around a workshop using the customised two-wheeled trolley, or kept on the workbench, providing flexibility for shop and field work.
“These Rebels are the most industrial Rebels yet,” said Martin Freibergs, business product manager, industrial/ light industrial product systems, ESAB. “Their strong output enables users to gain the productivity benefits of spray arc welding with a wide array of wires on mild steel, stainless steel and even aluminium. With a four-wheel roll system and a top wire speed of 20.3m/min combined with great torque, they can ensure accurate and consistent feeding of wires of all diameters.” In addition to their MIG/MAG capabilities, the multi-process Rebels also handle full MMA performance with electrodes up to 5mm diameter, as well as gas-cooled TIG applications with a dedicated gas valve for professional TIG welding using Lift TIG starts. Mr Freibergs commented, “Traditional welders with similar outputs are typically single- process MIG machines. They often fall short when it comes to power and long welding cycles. Rebel EMP 320ic offers fabricators a machine with true industrial performance for shop work, and the power, portability and multi-process flexibility contractors need for structural steel erection.”
ESAB Welding & Cutting Products has unveiled the Rebel EMP 255ic and Rebel EMP 320ic multi-process welders for MIG/MAG, DC MMA and TIG welding. Both units weigh 31.4 kg. and use 400 V ±10 per cent three-phase supply voltage. Rebel EMP 320ic provides a rated output of 320 amps/30 volts at 40 per cent duty cycle, and maximum output of 350 amps/34 volts, making it capable of running both solid and flux cored wires in heavy industrial applications. Rebel EMP 255ic provides a rated output of 255 amps/26.8 volts at 40 per cent duty cycle, and maximum output of 300 amps/34 volts, suitable for industrial applications requiring 1 to 1.2mm wires. Rebel EMP 255ic and Rebel EMP 320ic enable users to gain the productivity benefits of spray arc welding with a high duty cycle
ESAB Group (UK) Ltd – UK Email: email@example.com Website: www.esab.co.uk
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