Chapter 9 - Air Carbon Arc Cutting (CAC-A)

Question 1

Where must the air stream be aimed to ensure the molten metal is blown away?

Answer 1

The air must be aimed just under and behind the electrode

Question 2

Why are some air carbon arc cutting electrodes coated in copper?

Answer 2

Copper coating provides increased strength. Reduces overheating

Question 3

What are the 3 shapes air carbon arc cutting electrodes come in?

Answer 3

Flat, round, semi round

Question 4

What are flat electrodes used for?

Answer 4

Scarfing or washing surfaces

Question 5

What is air carbon arc cutting normally used for?

Answer 5

Repair work

Question 6

What safety precaution should be taken when air carbon arc cutting?

Answer 6

Air carbon arc cutting produces a lot of sparks. Safety screens or metal should be used to deflect the sparks down and away from workers, material and equipment