Weld faults

Question 1

Most serious weld faults

Answer 1

Cracking and overlap

Question 2

Cutting a notch into both ends of a weld and applying Force against one end is known as a

Answer 2

Nick break test

Question 3

Not to fact in a weld has stress flow lines:

Answer 3

Concentrated at one point

Question 4

A tapered transition ratio of 3:1 when joining plates of different thickness would

Answer 4

Decrease Notch effect

Question 5

High concentration of stress in a weld causes

Answer 5

Notch affect

Question 6

Inadequate heat input

Answer 6

Slag inclusions, porosity, lack of fusion, incomplete penetration

Question 7

Excessive heat input

Answer 7

Cracking, undercut, excess penetration

Question 8

Incorrect electrode angle

Answer 8

Undercut, overlap, lack of fusion

Question 9

Travel speed too low

Answer 9

Overlap, excess convexity, excess penetration

Question 10

Travel speed too fast

Answer 10

Cracking, lack of fusion, slag inclusions and incomplete penetration

Question 11

Contaminated joint area rust scale oil paint

Answer 11

Porosity slag inclusions lack of fusion cracking

Question 12

Insufficient root opening on a Groove weld causes

Answer 12

Lack of penetration

Question 13

Which variables would be effective in controlling excessive penetration on a Groove weld

Answer 13

Decrease the root opening

Question 14

Distortion can be controlled by

Answer 14

Maintaining an accurate joint fit up

Question 15

A stray Arc strike can

Answer 15

Cause a quenched and brittle condition in Metal

Question 16

Would most likely produce slag inclusions in a multi-pass weld

Answer 16

Low current settings with a long arc length

Question 17

Longitudinal cracks in a weld can be caused by

Answer 17

Excessive joint restraint

Question 18

Incomplete penetration is caused by

Answer 18

Root opening to narrow

Question 19

Excessive penetration on a root pass caused by

Answer 19

Travel speeds too slow

Question 20

A crater is

Answer 20

A depression at the end of the weld

Question 21

A weld is said to be concave when the

Answer 21

Center line of the weld is below the sides of the weld