WELDING

WELDING

1. Oxy-Acetylene

   • materials
     • acetylene tank (red)
     • oxygen tank (black)
     • consumable filler rod
     • flashback arrestor
   • flames
     • carburising
     • neutral
     • oxidising

2. Manual Metal Arc

   • materials
     • ground cable
     • electrode holder
     • consumable electrode

3. Metal Inert Gas

   • materials
     • argon gas shield
     • weld pool
     • torch

4. Tungsten Inert Gas

   • materials
     • non-consumable electrode
     • inert gas shield
     • filler rod

5. Submerged Arc

   • industrial use
   • hopper feeds flux into weld pool
   • work piece slowly turns

6. Resistance Spot

   • two copper electrodes
   • electrodes pinch applying pressure
   • current passes through electrode
   • only one point welds together

7. Resistance Seam

   • copper wheel electrodes
   • no flux
   • non-consumable electrode
   • low volts, high current
   • overlapping welds

8. Bridge Rectifier