5

Question 0

Dimensional defects 2

Answer 0

Incorrect weld size and overlap

Question 1

Three categories of weld defects

Answer 1

Dimensional fault

Structural discontinuities

Defects in the mechanical properties of the weld metal

Question 2

Structural discontinuities in the weld 7

Answer 2

Undercut
Incomplete penetration 
Underfill 
Incomplete fusion
Porosity 
Slag inclusions
Cracking

Question 3

Defects in the mechanical properties of the weld metal 4

Answer 3

Reduced tensile strength
Ductility
Hardness
Corrosion resistance

Question 4

Three types of distortion

Answer 4

Longitudinal
Transverse
Angular

Question 5

Longitude distortion

Answer 5

Shrinkage along the length of the weld

Question 6

Transverse distortion

Answer 6

Butt joints pull together down the length of the joint when welding

Question 7

Angular distortion

Answer 7

The angle between two pieces of base metal changes as the weld metal cools

Question 8

Distortion control 6

Answer 8

Avoid over welding

Deposit the greatest amount of weld metal in the shorted amount of time

Spread the heat as evenly as possible

Balance welds around the neutral axis

Use clamps, strong backs, or prebend

Preheat and post heat when necessary