Arc welding is nothing more than a process of joining two pieces of metal into a single solid piece.

1. Types & Characteristics of Arc Welders, TIG Welders,
MIG Welders, & Plasma Cutters
Arc Welders
Arc welding is nothing more than a process of joining two pieces of
metal into a single solid piece. To achieve this, the heat of an electric
arc is concentrated on the edges of two pieces of metal that are to be
joined. The metal melts, while the edges are still molten, additional
melted metal is added.
Arc welders generally come with a load of helpful features.
Equipments with unlimited amperage control enable you to create
professional welds. The lightweight and yet sturdily built models make
this type of welder convenient to carry around and durable enough to
withstand tough use. There are some models of arc welders that have
thermostatic heat protection features and a roll bar design to give the
unit full protection against damage.
MIG Welding Equipment
MIG Welding equipments are available in various sizes ranging from
a small, portable 115v, 20 amp model to full sized shop automotive
service equipment. MIG welders are widely known for high quality
performance, though economically priced. You can exercise control
over the quality of the weld with the aid of many different settings.
MIG Welding equipments come with cold running temperatures. The
machines also offer beneficial warranty options.
It is common knowledge that MIG welders use a wire feed and produce
a lower heat. This prevents metal distortion and allows for a high
quality job on thinner metals such as those involved in auto body
work.
MIG welders feed a constant stream of wire with a pull of the trigger.
You must be extra careful in choosing the consumables. Wire, for
example, comes in easy-to-use flux core wire for a quick job on thicker
materials, or a gas/solid wire combination for all other work.
TIG Welders
Most TIG welding machines come with several attractive features.
With push button control panels, the machines are extremely user-
friendly and some high-end models give you the option to easily adjust

2. for repeatable weld cycles, start, and weld crater. To customize the
shape and size of the bead, you can choose models with true square
wave AC output and pulse mode. Buy models that have safety features
like warning code circuitry and voltage protection.
One of the biggest advantages of TIG welder is it heats and joins the
two metal pieces together without the need for filler materials. Most
operators know that MIG welders join metals much faster than TIG
welders. But, TIG welders produce greater degree of accuracy, so
essential for certain types of jobs. The possibility of preventing cracked
seals or damaging the weld is also significantly decreased in TIG
machines.
Plasma Cutters
Some latest models of plasma cutters come with a host of features -
single-dial controls for easy adjustments, pressure gauges and air
pressure regulators – all aimed at cleaner and sharper cuts. Other
features include parts-in-place indicators, line voltage compensation,
and thermostatic protection. Above all, if you wish to do repetitive
work with complicated cuts, CNC robotic interfaces will ensure
consistent and precise cuts every time. Please know that latest types
of plasma cutters have an inverter in place of the transformer.
With several different styles of plasma cutters available, your choice
becomes wider. Duty cycle is a key factor in your buying decision.
Generally, you will find that bigger machines can handle thicker metals
and run longer to give it a bigger duty cycle. Also watch for the rating
that is assigned to plasma cutters by the manufacturer. This will tell
you how long each unit can cut through mild steel before needing to
be cooled down.
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