FCAW: Terms & Defects: Part 2 of 2 (WDTM22)

The learner will demonstrate knowledge of flux cored arc welding terminology and defects.

Author - David Crawford


Question 1:

Insufficient current produces large droplet transfer and excessive ____________.

Answer 1:

voltage

Answer 2:

splatter

Answer 3:

penetration

Answer 4:

spatter


Correct Answer:

spatter


Question 2:

The ability of an electrode to transfer current is known as:

Answer 1:

ionization potential

Answer 2:

current density

Answer 3:

surface tension

Answer 4:

discontinuity


Correct Answer:

ionization potential


Question 3:

Too high an arc ___________ can result in excessive spatter and wide, flat, irregularly shaped weld beads.

Answer 1:

voltage

Answer 2:

amperage

Answer 3:

current

Answer 4:

stickout


Correct Answer:

voltage


Question 4:

If the ____________ is too high in self-shielded electrodes the result may be porosity.

Answer 1:

stickout

Answer 2:

shielding gas

Answer 3:

voltage

Answer 4:

amperage


Correct Answer:

voltage


Question 5:

Insufficient electrode extension may result in:

Answer 1:

excessive voltage

Answer 2:

excessive amperage

Answer 3:

electrode fused to contact tip and/or nozzle dragged in weld pool

Answer 4:

spatter


Correct Answer:

electrode fused to contact tip and/or nozzle dragged in weld pool


Question 6:

The recommended electrode extension for gas-shielded flux core arc welding is:

Answer 1:

  inch

Answer 2:

  inch

Answer 3:

  inch

Answer 4:

  inch


Correct Answer:

  inch


Question 7:

Parameters which are too _______ may cause slag to be trapped in the weld.

Answer 1:

high

Answer 2:

even

Answer 3:

uneven

Answer 4:

low


Correct Answer:

low


Question 8:

The ability of an electrode to carry current is known as:

Answer 1:

ionization potential

Answer 2:

current density

Answer 3:

surface tension

Answer 4:

discontinuity


Correct Answer:

current density


Question 9:

An acceptable flaw is called a:

Answer 1:

detection

Answer 2:

failure

Answer 3:

discontinuity

Answer 4:

defect


Correct Answer:

discontinuity


Question 10:

A visible crack running in the same direction as the weld is called ________________.

Answer 1:

crater crack

Answer 2:

transverse crack

Answer 3:

longitudinal crack

Answer 4:

underbead crack


Correct Answer:

longitudinal crack


Question 11:

An indentation in the crater of a weld caused for too fluid of weld pool and/or not filling the crater is called:

Answer 1:

shrinkage void

Answer 2:

crater crack

Answer 3:

slag inclusion

Answer 4:

underfill


Correct Answer:

shrinkage void


Question 12:

A visible crack running across a weld (perpendicular) is called:

Answer 1:

crater crack

Answer 2:

transverse crack

Answer 3:

longitudinal crack

Answer 4:

underbead crack


Correct Answer:

transverse crack


Question 13:

What causes a weld pool to lack the ability to wet out?

Answer 1:

ionization potential

Answer 2:

current density

Answer 3:

surface tension

Answer 4:

discontinuity


Correct Answer:

surface tension


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