GMAW part 1

GMAW produces arc temperatures of _________degrees F.

• 1,200 - 2500

• 2,000 - 4,000

• 4,000 - 6,000

• 6,000 - 10,000

There are 2 fluxcore processes one is self shielding, the other ______________________

• uses no shielding gas

• uses a powdered flux

• ferrous core vapors

• external shielding gas

In critical applications, which is most often used FCAW-G or FCAW-S

• FCAW-G

• FCAW-S

The mode of transfer that metal droplets are carried axially to the molten weld puddle is the ___________ transfer.

• Short circuit

• globular

• spray

The mode of transfer that is the least efficient in terms of spatter/ weld metal loss

• short circuiting

• globular

• spray

This mode of transfer is best used on metals less than 5/16" thick.

• Spray

• globular

• short circuiting

The pulsed mode of transfer is a variation of the __________ mode.

• globular

• spray

• short circuiting

What type of transfer is does especially well on aluminum because of the smaller heat affected zone.

• spray

• pulsed spray

• globular

• short circuiting

What type of transfer is commonly used with FCAW welding.

• Spray

• pulsed spray

• short circuiting

• globular

The joint configuration for FCAW with CO2, is such that compared to SMAW, you can save ____________ on filler metal and a considerable amount of time.

• 10%

• 25%

• 50%

• 75%