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When used in automated welding operations, Contec MD from Fronius prolongs the endurance time of the torch several times over compared with when a conventional nozzle is used. The company has recently launched the second-generation Contec MD, which is said offer endurance times that are between five and 15 times as long in the joining of both aluminium and steel.

Benefits include higher process stability and system availability, exact tool centre point (TCP), and a flawless weld pattern.

Contec MD reduces the risk of tip wear and torch damage caused by wire-travel blockage. The contacting system guides the wire in V-shaped grooves that are now 12mm long, under a defined contact pressure.

Even after the half-shells start to wear, a mechanical spring ensures that the contact zone remains constant, providing a defined current transfer. In conjunction with the stable TCP, and without needing any readjustment, this results in high process stability, which also has a positive effect on seam quality.

The increase in lifespan over that of conventional contact tips — in specific cases this may mean more than 15 times longer — drastically increases productivity. This is because every time a contact tip has to be changed, work has to be stopped, causing downtime and outage costs.

Additional information

  • Contec MD is designed for electrode diameters from 0.8mm to 1.6mm
  • At the end of their long service life, the only parts that need replacement are the two half-shells
  • The nozzle stock, compression spring, clamping nut and spatter guard are all reused
  • Contec MD can be used on the latest range of Robacta, Robacta Drive and Robacta Drive CMT gas- and water-cooled torches
  • It has been trialled for up to 300A for welding low-alloy steels and up to 200A for CrNi steels

Fronius UK

Fronius UK, a subsidiary of Fronius International, provides the UK welding market with solutions for MIG/MAG, TIG, electrode, laser, plasma and resistance spot welding and automation. Its new state-of-the-art facility in Milton Keynes extends over 3,800m2 and houses the Tech Support team, the Repair Center, a warehouse and a training area and epitomises the importance of being able to deliver a first-class service to customers.

Fronius UK, a subsidiary of Fronius International, provides the UK welding market with solutions for MIG/MAG, TIG, electrode, laser, plasma and resistance spot welding and automation. Its new state-of-the-art facility in Milton Keynes extends over 3,800m2 and houses the Tech Support team, the Repair Center, a warehouse and a training area and epitomises the importance of being able to deliver a first-class service to customers.

Sales and service teams, both at head office and regionally, ensure that customers are supported as quickly as possible on their own premises. In addition, customers benefit from services such as calibration, a warranty extension and a maintenance contract.

For decades, Fronius has made significant contributions to advances in welding technology. The company is still in family ownership and its welding technology division is now one of the world’s technology leaders in the arc welding market segment. It is also the market leader in Europe.

Welding Technology is one of three Fronius divisions. Since the 1940s, Fronius has been creating technologies and solutions for monitoring and controlling energy in battery-charging systems, and since 1992 the same in solar electronics. The mains-connected inverter, the unique Fronius Service Partner programme and products for monitoring photovoltaic systems make Fronius one of the leading suppliers in the field of solar electronics.

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