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Spot Weld
A process in which two metal surfaces are joined by the heat from resistance to electric
current flow, typically a very small weld size.
Steel
A type of metal that is made from mined iron ore, purified in blast furnaces, and then carbon
is added during its molten stage.
Stick Welding (SMAW, Shielded Metal Arc Welding)
Stick welding uses a consumable electrode that is coated in flux to create the weld. An electric
arc forms between the electrode and the base metal. As you weld, the flux coating melts from
the electrode (which creates vapors that act as the shielding gas) and leaves behind a layer of
slag that protects the weld from contamination.
Stinger
Stinger is another name for the electrode holder. You’ll typically hear it used in the shop
or field.
Tack Weld
A tack weld refers to a small weld that is used to hold what you’re welding in its place.
Tack welds can be broken if changes need to be made.
Tensile Strength
Tensile strength is an indication of a material’s ability to resist being pulled apart by tension.
TIG Welding (GTAW, Gas Tungsten Arc Welding)
TIG welding utilizes a non-consumable tungsten electrode, and in certain cases a separate
filler metal. Current flows through the TIG Torch and electrode, while an inert gas passes
through the torch. The arc is created between the base metal and the tungsten electrode.
The welding arc is shielded with an inert gas such as Argon.
Weld Pool
Also known as the weld puddle, the weld pool is the molten material produced while the arc
is created, and during the welding process. It is important to protect the weld pool from
contaminants while it solidifies.
Wire Brush
An important tool for cleaning the welding surface both before and after welding.
Voltage
Voltage is the force that makes electrons flow through the conductor.
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