Transcript Welding Processes

A Presentation by Neil Cox
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GMAW or
MIG/Hardwire
SMAW or Stick
GTAW or TIG/Heliarc
OAW
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Uses a “welding gun”
to deposit weld metal
to weld area
4 settings based on
voltage and wire
speed
Most common
settings are Short
Circuit and Spray
Transfer
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Weld parameters are dictated by voltage and
wire feed speed
Different thickness of wire and types of wire
can be used
Requires a shielding gas during welding to
prevent air born weld contaminations
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GMAW is commonly used due to its fast
production speeds and ease of learning the
skill
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Commonly called
“Stick” welding
Uses a 14” metal rod
covered in a layer of
“flux”
Flux is made of
different elements and
materials depending
on weld metal
Settings are changed
via amperage
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Different rods (sticks) are used for different
purposes
Rods are labeled in a 4-5 digit code
For more
information visit
Lincoln Electric’s
Stick welding page
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Most common stick rods are:
6010/6011- Used for root passes generally. A
deep-digging rod that can burn through rust
easily.
7018- A higher tensile strength rod usually
used for cleaned steel for a harder and
smoother bead than 6010.
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Used for precision welds in a clean
environment
Uses an electric torch and filler metal to
deposit a precise weld bead on nearly any
metal
Can be used on steel and stainless steel as
well as copper, magnesium, nickel, titanium,
aluminum and more.
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GTAW is commonly used in the aerospace
and marine industry
It is among the slowest welding processes,
but is also the most versatile
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GTAW can be the slowest welding process, but
when done right can be one of the most
cosmetically pleasing
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Oxy/Acetylene Welding uses a flame to heat
the weld metal
There is no electricity involved
Oxygen and a combustible gas are mixed and
adjusted to create the necessary heat for the
weld
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OAW is a slow process that is not used much
in industry due to the newer processes
being discovered
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