Deck 18: Oxyacetylene Welding

Question 1

The flat ____ joint can be made with or without the addition of filler metal. This joint is one of the easiest welded joints to make.

A) outside corner
B) lap
C) tee
D) butt

Answer 1

A

Question 2

____ is the easiest metal to gas weld.

A) Low carbon
B) Stainless steel
C) Aluminum
D) Mild steel

Answer 2

D

Question 3

The ideal angle for the welding torch is ____ degrees.

A) 0
B) 45
C) 90
D) 180

Answer 3

B

Question 4

The flat tee joint is more difficult to make than the butt and lap joints.

Question 5

To prevent burnthrough, a torch should be raised or tilted, keeping the outer flame envelope over the molten weld pool until it solidifies.

Question 6

A(n) ____ weld is the most common out-of-position weld that a welder is required to perform.

A) overhead
B) trailing
C) horizontal
D) vertical

Question 7

Welding heat distortion and weld metal shrinkage are common problems caused by using an oxyacetylene torch to make large flat weldments.

Question 8

A(n) ____ joint is made by aligning the edges of two pieces of flat metal together so they are next to each other.

A) tee
B) outside corner
C) butt
D) lap

Question 9

Changing the torch angle changes the percentage of heat that is transferred into the metal.

Question 10

An increase in sparks on clean metal means a decrease in weld temperature.

Question 11

A problem that is unique to the ____ joint is that a large percentage of the welding heat is reflected back on the torch.

A) tee
B) outside corner
C) butt
D) lap

Question 12

It is permissible to lower the size of the torch flame when the correct tip size is unavailable.

Question 13

Gas welding cannot be used on thick sections of metal.

Question 14

Sometimes with small diameter drill bits you are better off using your hand to tighten the chuck rather than using a chuck key because if the bit grabs and the chuck was tightened with a chuck key, the bit may break.

Question 15

It is considered good practice in the field to stop a weld at the corner of a joint.

Question 16

With the ____ metal, it is possible to make welds with 100% integrity.

A) aluminum
B) low carbon
C) stainless steel
D) mild steel

Question 17

Heat is not distributed uniformly in the ____ joint.

A) lap
B) butt
C) edge
D) outside corner

Question 18

The ____ joint is made when one piece of metal is laid over the edge of another.

A) butt
B) lap
C) outside corner
D) tee

Question 19

During the welding process, the more frequently you add filler metal, the larger the weld will be.

Question 20

One of the characteristics of a(n) ____ joint is that one side of the metal will melt faster.

A) tee
B) edge
C) butt
D) outside corner

Question 21

____________________ the torch off is a process in which the torch is quickly moved away from the weld for a fraction of a second and then brought back to the welding position.

Question 22

For small welding jobs and for hobbyists, ____________________ welding is often the best welding method for thin metal and small parts because it is so easy to control the flame heat.

Question 23

An advantage of gas welding is that by changing the size of the tip you can change the welding ____________________.

Question 24

____________________ is the depth into the base metal that the weld fusion or melting extends from the surface, excluding any reinforcement.

Question 25

The power portable sheet metal ____________________ is a tool that can be very helpful when cutting irregular shapes.