Welding is a process to join
two different pieces of material together by melting them together. More
precisely, the edges are melted and then pressed together and allowed to cool. The
resulting joint is usually stronger than the materials around it. Welding is
similar to soldering and brazing but those heat a material with a relatively
low melting point temperature which is then placed between the two materials
and acts as a seal between them.
Arc welding is a very common
method of welding and uses electricity arcing between the welding device and
the welding material to create the heat to make the weld. There are several
different styles of arc welding including TIG welding. There is also gas metal
arc welding, which is commonly referred to as MIG welding, shield metal arc
welding, popular because of its simplicity and accessibility, and flux cored
arc welding that fall into this category.
TIG welding is a form
of arc welding.
Gas Tungsten Arc Welding, is
the proper or at least technical term for TIG welding. GTAW isn't nearly as
convenient and cool sounding as TIG though, we seem to like our acronyms to at
least sound like real words if they can't actually be one. Anyway, a consensus
seems to have formed to go with TIG rather than gtaw to identify this process,
and a worthwhile and efficient process it is.
Tungsten Inert Gas (TIG) welding
uses a non consumable tungsten electrode along with an inert gas to perform
welding jobs. The gas most commonly used is argon though for some materials
helium is preferred. The purpose the gas serves is to shield the materials from
contaminants like oxygen or water vapour. This is why it is sometimes referred
to as a shielding gas. A constant current is used to power the process.
Although TIG welding can be a
slower process than some other forms of welding it also offers several distinct
advantages.
For one thing, TIG welding can be used to join
virtually any two metals together. If a metal can be welded it can be welded
using the TIG process. Even otherwise non compatible metals can be welded
together.
TIG welding requires less
amperage. This helps account for the slowness of the process. On the other hand
it also helps to explain why TIG welding is a cleaner method of welding. There
is a minimum of slag or left over material to clean up after the process is
done.
The equipment used in TIG welding
offers some distinct advantages. A foot control mechanism allows the welder to
control the amperage and the heat. This enables her or him to produce the precisely
correct conditions needed for whatever materials are being used. The welding
device used in TIG welding is comparable to a writing pen in size. The small
size allows for very precise and detailed work to be done. This is another
advantage of TIG welding.
The TIG welding process can be
done without the use of fillers. This is very helpful when working with smaller
materials.
Welds made with the TIG method are generally
stronger and more durable than welds made with other methods. It is a more
versatile and cleaner method and is often well worth the extra time it needs to
be completed. The welder has better control and therefore can successfully
respond to the most detailed and intricate welding challenges.
Welding is a skill that will
always be an in demand skill and TIG welding is a type of welding that is one
of the most useful of all. Because of this it would seem there will always be a
demand for trained and competent TIG welders.
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