Deck 11: Gas Tungsten Arc Welding of Pipe

Question 1

Using the _____ technique, it is important to watch the root edge. ​

Answer 1

freehand

Question 2

The skill necessary to perform pipe welds in position is _____ that of welding on a plate. ​

A)greater than​
B)less than​
C)the same as​
D)much less than​

Answer 2

A

Question 3

When walking the cup, there are _____ techniques for adding the filler wire. ​

A)two​
B)three​
C)four​
D)five​

Answer 3

A

Question 4

Welding pipe in the 1G position will be similar to welding _____ in the 1G position. ​

A)wire​
B)joints​
C)steel​
D)plate​

Question 5

In the _____ technique, the GTAW torch is held so that the tungsten is positioned just above the weld. ​

A)freehand​
B)walking the cup​
C)beveling​
D)grinding​

Question 6

When preparing a pipe for welding, the _____ step is to prepare the ends of the pipe to meet the requirements of the welding procedure. ​

A)last​
B)first​
C)second​
D)third​

Question 7

When welding pipe in the 1G position, the filler metal is added from _____ the weld joint and the pipe is rolled to maintain the deposition of weld metal from above the joint. ​

Question 8

Once the beveller is positioned to_____ degrees, the torch should be positioned on the pipe where the cut is to be made. ​

Question 9

Which technique is most commonly used for controlling the arc length when making a GTAW? ​

Question 10

When using the freehand technique, what should you do if the keyhole gets too large? ​

Question 11

In most cases, if the beveling equipment is in good working order, your cut should be _____ and you should see little to no light coming from under the root face. ​

A)heavy​
B)deep​
C)round​
D)square​

Question 12

Light slag can be removed from the edge of the cut surface by using a _____ file and running it from the inside of the pipe, holding it at a low angle and knocking lightly attached slag from the inside of the pipe. ​

Question 13

Which technique is used on carbon steels and stainless steels that are typically greater than  gauge   thickness? ​

Question 14

_____ occurs when the weld pool shrinks as it cools and the bead becomes concave. ​

Question 15

By resting the edges of the cup lightly on the groove face when walking the cup, the cup has _____ points of contact. ​

A)two​
B)three​
C)four​
D)zero​

Question 16

The _____ technique is done by resting the cup on the workpiece. ​

A)resting the cup ​
B)beveling​
C)walking the cup ​
D)freehand​

Question 17

What results from suck-back?​

Question 18

The concept of using an external shielding gas for welding was experimented with by H. M. Hobart and P. K. Devers in the late _____. ​

A)1920s​
B)1930s​
C)1940s​
D)1950s​

Question 19

A GTA welding pipe alignment tool can be used both to clamp the pipe ends in alignment and to allow access to make the _____. ​

A)tack welds​
B)root pass​
C)weld pool​
D)cap pass​

Question 20

What can result from carrying too large a weld pool when making the last pass? ​