P5-1: Air Carbon Arc Cutting

Question 0

What else can you do with CAC-A other than cutting?

Answer 0

Partial cut, gouge or wash off a surface

Question 1

What does CAC-A stand for?

Answer 1

Air Carbon Arc Cutting

Question 2

How does Air Carbon Arc cutting work?

Answer 2

By melting the base metal with an electric arc

Question 3

What process is used in CAC-A?

Answer 3

Arc is struck between a welding power source and a Carbon Electrode melting the base metal. Then jets of compressed air blow the molten metal away to form a kerf or groove

Question 4

What type of metal can be cut using CAC-A?

Answer 4

Any metal that conducts electricity

Question 5

How does the Oxy-Fuel Gas Cutting process and Air Carbon Arc Cutting differ?

Answer 5

CAC-A does not cut the base metal by oxidizing it

Question 6

When a high pressure air supply is not available, how else could you cut or gouge?

Answer 6

By using Shielded Metal Arc Cutting (SMAC) Electrodes

Question 7

What kind of power source can be used with CAC-A?

Answer 7

AC or DC

Question 8

What types of metals should never be cut or gouged using CAC-A?

Answer 8

Beryllium, Cadmium or Lead (because of the toxins produced)

Question 9

Which alloys in metal do you need to wear a respirator while cutting?

Answer 9

chromium, zinc, copper or nickel

Question 10

Because of the high current used in CAC-A what shade of lens is recommended?

Answer 10

12 for most jobs, #14 for larger jobs with more current

Question 11

How far can the blast of compressed air throw molten metal sparks and slag?

Answer 11

6m (20 ft)