WCA January 2008

Welding – machinery and technology

New feeders for using sensing technology

New models from PWM

Clean, ‘green’ and easy to operate, PWM’s range of cold pressure welders offer wire and cable manufacturers a fast, reliable and cost effective way to weld non- ferrous materials without heat, flux or filler. The company’s newest models include the P1000 hydraulic rod welder and the portable air/ hydraulic HP100 machine. The P1000 is a compact machine with a small footprint and a wide capacity ranging from 6mm to 16mm copper and up to 20mm aluminium. Designed with a sloping front panel and angled mechanism for ease of operation, the P1000 has quick release dies and an easily adjustable die setting to ensure that die changeover is fast and problem-free. The trolley-mounted HP100, which has a capacity of 1mm-5mm copper/aluminium, has a solid steel welding head for added strength and stability. The welding head can be supplied as a detachable unit on request, enabling the machine to be used in places where space is very limited, at a strander lay plate, for example, or inside a spooler casing. PWM also manufactures small hand-held manual models ideal for repairing wire breaks in confined spaces, and durable low maintenance manual machines which can be bench or trolley mounted and which provide a reliable weld on non-ferrous wire and strip up to 3.6mm on copper and 5mm on aluminium. The EP500 and P1500 rod welders offer manufacturers a fast, econo- mical way to weld large copper rod sections up to 25mm and aluminium up to 30mm. PWM industry standard dies, manufactured to suit round or profile wire and rod, are precision- engineered by skilled craftsmen at the company’s workshop in England.

Kemppi – providing a low cost shortcut to MIG/MAG welding ❍

ArcFeed 200 and 300 are two new wire feeders using voltage sensing technology launched by welding equipment manufacturer, Kemppi (UK) Ltd. These new wire feeders have been designed so existing users of both CC (constant current) and CV (constant voltage) characteristics MMA and other power sources can expand their welding capabilities by providing a low cost shortcut to MIG/MAG welding. Voltage sensing technology uses the welding arc voltage to generate the power needed to control the feeder. After the operator has selected the desired settings with the material and wire size, and the arc is struck, the feeder automatically controls the welding parameters so that weld quality is maintained. A feature of this feeder is that there are no control connecting cables between the feeder and the power source as in normal MIG/MAG welding, only power cables. This makes these wire feeders very mobile and being lightweight they are ideal for on-site applications including shipyards, construction sites as well as in general fabrication. ArcFeed is a small investment to improve productivity, especially in applications where productivity plays a far greater role than the use of sophisticated welding parameters keeping tight tolerances in weld quality. The strong and impact resistant double skinned plastic casings provide excellent electrical isolation for these feeders. All components are fully enclosed to withstand impacts and water ingression, whilst the 4-wheel drive feeding system ensures a smooth constant wire feed. As well as automatic sensing of the power source polarity, standard features include a display of the last welding parameters used on an LCD shock proof polycarbonate display. Adjustment of the post gas time, burn-back time, gas testing and wire feed inching parameters are also provided inside the ArcFeed case.

PWM Ltd – UK Fax : +44 1233 820591

Kemppi (UK) Ltd – UK Fax : +44 8456 444 202

Email : pwm@btinternet.com Website : www.pwmltd.co.uk

Email : sales.uk@kemppi.com Website : www.kemppi.co.uk

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Wire & Cable ASIA – January/February 2008