Section 2-GMAW

GMAW uses for shielding, gases that are?

• inert

• active

• exotic

• inert and active

GMAW uses the following current?

• DCEP

• DCEN

• AC

• ACHF

In GMAW current is determined by the?

• voltage

• shielding gas

• wire feed speed

• machine type

What is not a type of metal transfer?

• short circuiting

• spray

• droplet

• pulsed

What gas would you choose for spray transfer welding?

• 75% Ar 25% CO2

• 100% He

• 98% CO2 2% Ar

• 98%ar 2% CO2

What type of transfer requires a special machine?

• pulsed

• spray

• globular

• short circuiting

The welding current is transferred to the wire via the?

• conduit

• feed rolls

• contact tip

• liner

What type of metal transfer would produce the least spatter?

• short ciruiting

• spray

• droplet

• globular

Short circuiting transfer can be used in what position?

• vertical down and flat only

• flat and horizontal only

• all positions

• flat only

The point where spray metal transfer begins is called the?

• short circuit point

• spray transfer point

• upslope point

• transition current