Metabo Welding Machine MIG/MAG 160 User Manual download pdf (Page 36)

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Plasma welding

Plasma welding, a development of the TIG technique, also has decisive advantages and offers an attractive alternative to la-

ser welding where high quality is required, particularly for metal sheets and other components.

However, unlike TIG welding, the arc is fed through the welding torch via a copper nozzle which achieves a far higher power

density. The higher welding speed not only saves time and money, but also ensures deeper weld penetration. The Tungsten

electrode also has a far longer life as it is encased in the plasma nozzle. Another advantage of plasma welding is that ignition

is triggered by an auxiliary arc (pilot arc), ensuring reliable ignition even for automated applications, without HF interference.

Applications

Welding arc comparison

TIG

welding

Plasma

welding

Welding process comparison

MIG welding TIG welding

Plasma welding

3300 °C

6000 - 10000 °C

12000 - 14000 °C

10000 - 12000 °C

25000 - 50000 °C

2400 °C

8000 °C

Welding of pipe connections Welding of multiple interactions

Welding of pipe T - profiles

Advantages:

· High quality weld

· Highly reliable process

· High degree of automation

· High productivity through high welding speeds

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Metabo Welding Machine MIG/MAG 160 User Manual Page 36