Welding

1
Welding

• Chapter 1

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Oxyfuel Welding

• Uses heat from combustion (fire) between oxygen
  and a fuel
• Filler metal may or may not be used
• What type of weld is made without filler metal?
• Autogenous weld

3
Oxyfuel Welding

• Most common fuel used is acetylene
• Oxyacetylene welding is flexible
• Use

4
Arc Welding

• Uses an electric arc to coalesce metals
• Arc welding is the most common method of welding
  metals
• Electricity travels from electrode to base metal
  to ground

5
Shielded Metal Arc Welding

• Arc is protected by the electrode coating
• Also called Stick Welding
• Use

6
Gas Metal Arc Welding

• Shielding gas protects arc between wire electrode
  and weld
• Uses argon gas
• Also called MIG welding
• Use

7
Gas Tungsten Arc Welding

• Arc is protected by gas surrounding the electrode
• Uses tungsten gas
• Also called TIG Welding
• Use

8
Flux Cored Arc Welding

• Electrode contains a flux center
• Flux prevents harmful substances from forming on
  the weld
• Use

9
Submerged Arc Welding

• Arc travels between bare electrode and weld
• Use
• SAW (Submerged Arc Welding)The electric current
  arcs beneath the flux powder. When the flux
  melts, the weld bead appears

10
Plasma Arc Welding

• Arc travels between the tungsten electrode and
  weld
• Use

11
Resistance Welding

• Uses heat and pressure to bond metals
• Use