SMAW

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SMAW

• Agriculture Science 1

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SMAW

• Shielded Metal Arc Welding
• Stick welding
• Arc Welding
• A welding process where similar materials are
  joined with a heating process caused by an
  electric arc.  In the most common use, this
  process includes the use of a filler metal.

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Why arc weld?

• Who has arc welded before?
• Careers in Arc welding
• Versatility

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Careers

• Inspector/Expeditor
• Rail Road-Bridge Crew, Welder
• Welding Engineer
• Welder Weld Engineer
• Associate Steel Inspector
• Underwater Welding
• Sales Manager

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Versatility

• Weld almost any metal
• Strength
• Cost effective
• Durability of weld
• Most common type of welding

• Repair work
• Employment
• Ability to weld in difficult places

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Safety

• Safety Glasses
• Welding Helmet
• Gauntlet style gloves
• 100 Cotton Clothes-LONG SLEEVES!
• No cuffs in pants or frays
• Leather Boots
• No Watches
• Flammable Liquids on Clothes

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• One glove missing
• Improper gloves
• Apron tied in front
• Wearing a watch
• Tie not tucked in
• No safety glasses
• Wearing a ring
• Pants are cuffed

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Welding Terms

• Electrode
• Electrode Holder
• Ground
• Root Pass
• Filler Pass
• Cover Pass
• Slag

• Spatter
• Undercutting
• Tack
• Arc
• Amperage
• Flux

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Electrode Classification
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Techniques

• Stringer (drag) (whip)
• Weave
• circles
• crescent
• zig zag
• box weave
• stitch

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Weld Bead

• A weld resulting from a pass

Stringer Bead
Weave Bead
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Passes

• Weld Pass - A single progression of welding along
  a joint. The result of a pass is a weld bead or
  layer

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Fill Pass
Cover Pass
Root Pass
Hot Pass
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Progression (vertical)

• Up
• deeper penetration
• Higher deposit rate (lb/hr)
• Use near 90 degree travel angle or slightly up
• Down
• faster (point to point)
• less penetration for thin metal
• Use steep drag angle

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