Arc Welding

Fusion Weld

Where the edges of the base metal are melted together and solidify

Arc Welding

-Welding with electricity- where the Arc is the heat source

SMAW = Shielded Metal Arc WeldingGMAW = Gas Metal Arc WeldingFCAW = Flux Core Arc Welding

Striking an Arc

-Getting current flowing in the circuit- Two methods- scratching and

tapping

Machine/Amperage Setting

Heat setting on the machine- the higher the amp setting- the hotter

the Arc

Electrode

Welding rod (6013 / 6011)Coated with flux, the filler metal is

the same as the base metal.Consumed in the weld and becomes

part of the bead; adds strength to the weld.

Arc Length

-Distance from the end of the electrode to the base metal; equal to the diameter of the bare end of the

electrode.

Travel speed

-How fast the rod is moved along the base metal- Puddle should be two times the diameter of rod. 1” of

bead should equal 1” of electrode.

Electrode Angle-Travel Angle =The angle of the

electrode to the base metal in the direction of travel- should be 60’-80’F

-Work Angle = The angle of the electrode to the weld.

Base metal

-The metal the weld is being made on

Bead

-The deposited metal on the base metal by the melting electrode

Pass

-Each bead deposited on the base metal

Ultra Violet/Infrared Rays

• Rays emitted from the arc, harmful to eyes and skin.

Welding Helmet

• Used in arc welding to protect eyes and face from rays, heat, and sparks.

• #10 - #11 lens.

Electrode Holder

• Holds the electrode, provides a handle to hold while welding.

Ground Clamp

• Connected to the work table or piece of metal to complete the electrical circuit.

Welding Rod

• The Electrode (6013 / 6011)• Same metal as base metal.• Consumed in the weld and becomes part of

the bead; adds strength to the weld.

Leathers

• Protective clothing made from leather to protect the welder from heat, rays, and sparks.

• Jackets and aprons.