Set up and use flux cored arc welding (FCAW)

What is similar between FCAW and GMAW?

• BOTH USE CV ( CONSTANT CURRENT)

• IN BOTH CASES THE WELDING DIRECTION HAS NO EFFECT ON THE WELD

• NEITHER REQUIRES A CORRECTLY SET WELDER TO ENSURE A GOOD WELD

• BOTH USE A NONCONSUMABLE ELECTRODE

WHAT ARE THE MOST COMMON GMAW DIAMETERS FOR WELDING 1/4'' TO 1/2'' MILD STEEL ?

• .035 INCH TO .045 INCH

• .40 INCH TO .50 INCH

• .040 INCH TO .060 INCH

• 3/32 INCH TO 5/32 INCH

WHAT DOES '' DUTY CYCLE'' MEAN ON A WELDING MACHINE?

• RATED OUTPUT WITHOUT OVERHEATING

• CURRENT OUTPUT

• CONSTANT CURRENT

• CONSTANT VOLTAGE

WHAT DOES ''1'' REPRESENT IN THE FCAW CLASSIFICATION E71-T?

• WELDING POSITION

• CHEMICAL COMPOSITION

• STRENGTH

• USABILITY

What is one way to change the polarity on a welder?

• manually reverse the cables

• reverse the rod in the electrode holder

• turn up the amperage

• turn down the amperage

what polarity is used in FCAW NR-211 wire?

• straight

• inert

• reverse

• curved

What type of gas is best used for FCAW- G5 wire?

• CARBON DIOXIDE

• Compressed air

• acetylene

• argon

Why should a welder take a break when welding with carbon dioxide?

• Welder may create a wall of gas that may cause nausea

• welder might loose hearing from noisy equipment

• welder might get blind from flash burn

• welder might get a skin burn