Certified Welder Heat Input and Distortion Control 2

Question 1

Which welding technique deposits short weld segments in the opposite direction of the overall welding progression?

Accepted Answer

Backstep welding

Answer

Skip welding

Answer

Balanced welding

Answer

Cascade welding

Question 2

Pre-setting (presetting) as a distortion control technique involves:

Accepted Answer

Positioning parts at an offset angle to compensate for expected distortion

Answer

Applying post-weld heat to straighten parts

Answer

Welding passes in a specific alternating sequence

Answer

Peening the weld between passes

Question 3

How does peening a weld bead between passes help control distortion?

Accepted Answer

It stretches the weld metal to counteract contraction stresses

Answer

It increases the cooling rate of the weld

Answer

It adds filler metal volume to the joint

Answer

It increases the hardness of the weld deposit

Question 4

Which distortion control method physically prevents movement by holding parts rigidly during welding?

Accepted Answer

Restraint and fixturing

Answer

Balanced welding sequence

Answer

Backstep welding

Answer

Skip welding

Question 5

Alternating weld passes on both sides of a joint to equalize shrinkage forces is known as:

Accepted Answer

Balanced welding

Answer

Backstep welding

Answer

Skip welding

Answer

Cascade welding

Question 6

Which type of distortion is caused by unequal transverse shrinkage through the thickness of a weld joint?

Accepted Answer

Angular distortion

Answer

Longitudinal shrinkage

Answer

Transverse bowing

Answer

Buckling

Question 7

Compared to a few large passes, using more smaller passes in a multi-pass weld generally:

Accepted Answer

Reduces distortion by limiting peak temperature and heat input per pass

Answer

Produces more total distortion due to repeated heating

Answer

Has no effect on the total distortion

Answer

Increases the HAZ size on each pass