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Tig welding is a much cleaner welding process compared to something like arc or mig welding.
I have a tig welding video here showing the "fusing" of the stainless
steel in the above pictures.
It is
often used for very small delicate welds, on thin steel.
This is a primary advantage of using a TIG welder as you can make
really small welds.
The picture is showing the weld bead
on stainless steel. The thickness of the stainless steel sheet is only a mere 1.2mm (0.045") thick.
So the actual weld bead shown here would be about 2-3mm wide. Pretty small huh!
So for things like welding car panels, custom motorbike frames,
handrails, etc can be made easily with less rework time cleaning and grinding off excess
welds.
The photo shows
what a tig torch looks like.
It is pretty much shaped like the
letter "T", with the exception that onepart of the "T" is
shorter than the other. Inside that T part is the tungsten electrode.
The tig welding torch creates an
electric arc that is consantly burning. People often say that if you can weld with an oxy acetylene
set you will find it very easy to use a tig welding machine.
This is because when you are tig welding you are essentially using
the heat generated from the electrical arc to melt the base metal. When the metal becomes molten,
it can all melt together forming a weld.
This is called fusing it together. So for small welds you would
simply just fuse the metal together.
If you are required to make a larger weld you would use what is
called a filler rod. A filler rod is just a thin piece of metal that you slowly feed into the
welding arc. They are round and about 900-1000mm long.
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