Welding parameters automatically optimised
May 23rd 2006

ESAB says its Qset technology is changing the way welding parameters are optimised for short-arc welding. According to the company,m the technology affords significant set up time savings, as no trial and error set up procedures are required, plus it can offer improved weld quality, reduce the need for post-weld cleaning and enable operators to produce high-quality joints with minimal set-up time and maximum productivity.

All the operator has to do is select the wire feed speed and Qset automatically sets the correct welding parameters for given wire/gas combination. All valid wire/gas combinations can be used. There are no synergic lines, just a single knob to set the wire feed speed and obtain welding parameters. Nevertheless, the operator can still elect to modify arc length by means of a voltage trim control.

ESAB says another benefit is that the control algorithms maintain a constant power in the arc and depth of penetration, even if the contact tip distance changes. Because the arc stability is closely controlled, there is also less weld spatter and therefore less post-weld cleaning.

Qset is initially being incorporated within the MA23A control panel that is fitted to the Origo Mig3000i power source and the Origo Mig 300i power source used in conjunction with the Origo Feed L3004.

The company believes a wide variety of users will benefit from the technology. In particular, MIG brazing, which is now employed extensively in the automotive repair sector for repairing galvanised steel body panels due to the reduced heat input distortion and burn-off of the zinc galvanising. ESAB says it also offers better characteristics for welding with CO2 where the the stable short arc reduces spatter and consequently minimises the amount of after treatment work required.

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