TIG lessonLesson)

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ARC WeldingArc welding is a processes where metals are melted and joined together using intense heat produced by an electric arc. (about 1400oc for steel)

There are 3 main types of ARC Welding that you will be looking at in this course :MMA Manual Metal Arc (also called Stick welding or Shielded Metal Arc Welding - SMAW)

MIG - Metal Inert Gas welding (also called Gas Metal Arc Welding – GMAW)

TIG – Tungsten Inert Gas welding (also called Gas tungsten Arc Welding -GTAW)

(Today we will look at MIG and TIG welding)

Tungsten Inert Gas Welding - TIG (also called Gas tungsten Arc Welding -GTAW)

TIG Welding is becoming more common in welding but is still mostly used by professional welders. TIG is a more controlled welding process and is better than MIG for non-steel welding e.g. Aluminium.

In TIG Welding the electrode made of Tungsten. It makes an arc with the base metal and produces a molten pool of metal. Additional metal (filler rod) is usually added into the molten metal pool

The tungsten electrode does not melt in this process.

A flow of an inert gas passes out of the welding torch during welding. This inert gas (usually ARGON) acts as a shield to protect the weld process.

TIG welding is not available on the simulator so we will look at real TIG welding

TIG Welding Equipment(filler rod not shown)