Deck 5: Thermal Cutting Processes

Question 1

Freehand cuts should be made as clean and _____ as possible. ​

A)rounded ​
B)square ​
C)vertical​
D)horizontal​

Answer 1

B

Question 2

Pipe can be cut _____ or with a pipe-cutting machine. ​

Answer 2

freehand

Question 3

The PAG process is similar to that of a _____. ​

A)5G PA​
B)PAC​
C)OFC-A​
D)CAC-A​

Answer 3

D

Question 4

The oxyacetylene torch is often referred to as a _____ wrench. ​

A)gas​
B)fire​
C)smoke​
D)discharge​

Question 5

Pipe-cutting machines can be manually operated, or they may have a _____ motor. ​

A)carbon​
B)torch​
C)manual​
D)drive​

Question 6

_____ and punches can both be used to lay out an accurate line. ​

Question 7

What does PAC use ionized gas for? ​

Question 8

The OFC-A process is also known as _____. ​

A)cutting​
B)bending​
C)kindling​
D)burning​

Question 9

In the CAC-A process, the _____ blows the molten metal away. ​

A)plasma column ​
B)surface metal ​
C)air stream​
D)old weld​

Question 10

Pipe-cutting machines are also known as _____ machines. ​

A)pipe-beveling ​
B)hand-operated ​
C)motor-driven​
D)grinding​

Question 11

Oxyacetylene gouging uses the same basic equipment as _____ does. ​

Question 12

How can you ensure optimum accuracy when using a piece of soapstone to mark a line? ​

Question 13

On hand-cranked, manually operated, pipe-cutting machines, the crank handle can be on the _____ or connected through a flexible cable. ​

Question 14

Why can pipe be a challenge to cut? ​

Question 15

On many machine torches the cutting tip is positioned very close to the _____. ​

Question 16

PAC uses a very concentrated column of high-velocity, high-temperature _____ gas to rapidly melt or vaporize the metal to create a cut. ​

A)ionized​
B)plasma​
C)molten​
D)concentrated ​

Question 17

What are the two most commonly used thermal-cutting processes? ​

Question 18

The three major thermal-cutting processes widely used in the pipe-welding industry are OFC-A, PAC, and _____. ​

A)CEC-A​
B)CAC-A​
C)CAC-B​
D)CEC-B​

Question 19

The _____ process removes metal from the surface of a pipe or weld without, in most cases, cutting all the way through. ​

A)gouging​
B)welding​
C)burning​
D)cutting​

Question 20

Why is OFC-A equipment the most commonly used in the pipe-welding industry? ​