Welding Flashcards
1
Q
What color hose is for oxygen?
A
Green
2
Q
What color hose is for acetylene?
A
Red
3
Q
What are the welding processes?
A
- Shielded metal arc welding (SMAW)
- Metal inert gas welding (MIG)
- Flux core arc welding (FCAW)
- Gas tungsten arc welding (TIG / GTAW)
4
Q
What do the numbers for welding rods represent? For example, 6011.
A
- First two digits are tensile strength per square inch of weld (60 = 60,000 psi)
- Third digit is which position the weld works best in (1 is all positions, 2 is horizontal and flat only, 3 is flat only)
- Fourth digit is flux or shielding on the rod
5
Q
What are the three most common metals welded with a MIG welder?
A
Carbon steel
Stainless steel
Aluminum steel
6
Q
What is the most common wire used for welding carbon steel?
A
ER 70S-6
7
Q
What are the thicknesses of solid wire MIG welding electrodes?
A
- 023
- 030
- 035
- 045
8
Q
What gases are used for MIG welding?
A
- Argon (for aluminum)
- Carbon dioxide (for very thick steel)
- Helium (for aluminum but not as common as argon)
9
Q
What is the most common shielding gas mixture?
A
C-25
10
Q
What are the groove welding positions?
A
- 1G: flat position
- 2G: horizontal position
- 3G: vertical position
- 4G: overhead position
