Quiz - 6

Question 1

What is post heating used for:

Answer 1

To soften the weld

Question 2

What technique can be used to restart weld beads easier and more uniform:

Answer 2

Start ahead of where you ended and then back track to where you left off

Question 3

Why would thick butt joints be grooved on both sides:

Answer 3

Penetration is better
Less distortion
Easier to weld

Question 4

What can watching the back edge of a weld pool help you determine:

Answer 4

The correct Current Setting

The correct Arc Length

Question 5

What is the purpose of a hot pass:

Answer 5

To smooth the pass out

To burn out any slag inclusions

Question 6

What can happen if the molten weld pool becomes too large on a root weld:

Answer 6

Excessive penetration

Can burn through the metal on thinner metals

Question 7

What effect does changing from a trailing angle to a leading angle have on a weld:

Answer 7

Wider bead

Less penetration

Question 8

T / F: Some weld joints are grooved to increase penetration of the weld in the root area

Answer 8

True

Question 9

How much should you space the root opening of a butt joint:

Answer 9

About the size of the rod you are using to weld

Question 10

Why should some weldments be preheated before welding starts:

Answer 10

To reduce:
-Cracking
-Distortion
-Hardness
-Stresses
(all of the above)

Question 11

Why is it important to have a good cover pass:

Answer 11

It adds strength and helps hold the other passes together

Question 12

Sketch 2 of the four standard grooves used for welded joints: (Gonna have to look this up i cant put a picture in here)

Answer 12

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If you can understand this sad attempt then youre prolly good :)

Question 13

Why are backing tapes used on some joints:

Answer 13

So the weld doesnt stick to the surface it is sitting on. You can also get good penetration without worrying about the back