FCAW Graded A+
**FCAW Processes**
What type of FCAW process uses atmospheric shielding provided by the flux material inside the wire?
FCAW-S (Self-Shielded)
What type of FCAW process requires an external shielding gas? FCAW-G (Gas Shielded)
Which type of FCAW process is more portable? ...
What type of FCAW process uses atmospheric shielding provided by the flux material inside the wire? 💡
FCAW-S (Self-Shielded)
What type of FCAW process requires an external shielding gas? 💡 FCAW-G (Gas Shielded)
Which type of FCAW process is more portable? 💡 FCAW-S (no gas cylinder required)
**FCAW Statistics**
What percentage of welding done in 2005 was represented by FCAW? 💡 Around 50%
**FCAW-Electrodes**
What benefits do FCAW-G electrodes gain by having an external shielding gas? 💡 More alloying
elements and fluxing agents
**FCAW-Machines**
What kind of power source do FCAW machines use? 💡 Constant-potential/Constant-voltage
How do changes in wire feed speed affect the arc voltage on a FCAW machine? 💡 The arc voltage
remains constant, and the amperage increases or decreases accordingly
**FCAW Arc Parameters**
, How does increasing voltage affect the arc length? 💡 It increases the arc length
How does decreasing voltage affect the arc length? 💡 It shortens the arc length
**FCAW Welding**
How does a constant-potential welding machine maintain the arc length? 💡 By keeping the voltage
constant, changes in wire feed speed cause changes in amperage to maintain the same arc length
**FCAW-Flux**
What protects the molten weld pool from the atmosphere? 💡 The flux inside the electrode provides
protection from oxygen and nitrogen
What improves weld strength through chemical reactions and alloys? 💡 The flux inside the electrode
also improves strength through chemical reactions and alloys
What elements are added to the flux to improve weld shape, hardness, strength, creep resistance, and
corrosion resistance? 💡 Carbon, chromium, and vanadium
What elements help remove oxides and/or nitride in the weld? 💡 Aluminum, silicon, and titanium
Serving as a blanket ✔️Slag can also slow down the weld cooling rate by ___________ Which improves
it's physical properties.
True ✔️The words "potential" and "voltage" have the same meaning and are used interchangeably.
Water cooled and air cooled ✔️FCAW guns can be cooled using which two methods?
Water cooled ✔️These guns are more efficient than air cooled guns at removing waste heat.
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