SMAW
What is the purpose of a welding machine’s ground clamp?
to complete the circuit
How is arc length varied in GMAW
voltage setting on machine
what happens to oil and grease under pressure
becomes explosive
What type of wire is used in FCAW
Tubular
What should be used for proper ventilation
Air
how is voltage changed when doing SMAW?
Arc length
What happens if your travel angle is too high
undercut, low penetration, push the puddle back
what is a backfire
a loud noise associated with the momentary extinguishment or relighting of flame at the tip
where does the shielding come from
the flux in the wire
what is the danger when welding materials with zinc
fumes
What is duty cycle
percentage of a ten minute period a machine can run at rated output
what type of shielding gas is CO2
active
what is a flashback
the burning of the flame into the tip or torch
What polarity is FCAW
DCEN
sparks can travel how many feet?
35
What is travel angle
the angle we incline or rod to as we move along the piece
this part of a GMAW machine transfers the power from machine to the wire
contact tip
What is the maximum pressure in an oxygen tank
2200 psi
This process can be pushed or dragged along the metal
false it must be dragged
after welding or hot work the area should be inspected for
smoke embers and flames
What type of rod is 7018
low hydrogen
What type of wire is used in GMAW
solid
name three fuel gases
acetylene, propane, hydrogen
E71T-11 is a FCAW electrode what is the 7 for?
70000 lbs of tensile strength
fuel cylinders should be opened how far
1-1 1/2 turns