Welding Flashcards

1
Q

Name the three principle types of welding?

A

Gas welding, electrical arc welding, electrical resistance welding.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are some advantages of gas shielded arc welding?

A

The weld is strong, ductile and more corrosion resistant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which method of welding is less likely to cause buckling or warping of thin metal sheets?

A

Electrical arc welding, or TIG welding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the purpose of shielding an arc weld with an inert gas?

A

The gas prevents atmospheric Oxygen and/or Nitrogen from contaminating the weld.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a common method of controlling expansion when welding a joint?

A

Place a tack weld along the length of the joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the effect of inadequate penetration on a weld?

A

The weld will be weak

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the purpose of the flux used with brazing & silver soldering?

A

Flux cleans the base metal by removing any oxide film

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What type of flame is used when torch brazing or silver soldering?

A

Neutral flame

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What must be done to the soldering iron tip to increase the amount of heat transferred from the tip to the work?

A

The tip must be clean of all contaminates and properly tinned.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is preferred method of welding aluminum and/ or magnesum?

A

Tungsten Inert Gas (TIG) welding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What precautions must be observed in order to weld titanium?

A

All traces of oxygen & nitrogen must be kept away from the weld area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Describe one type of repair that could be made to a dented steel tube cluster joint?

A

A formed steel patch could be welded over the damaged area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How can a soft flame be obtained without reducing the heat output of the torch?

A

Use a large tip and adjust the gas pressure accordingly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What factors determine the amount of heat delivered by a gas welding torch?

A

the size of the tip and the gas pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When an oxyacetylene torch is extinguished, which valve is turned off first?

A

turn off the acetylene gas valve first

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

when a gas welding project is completed, which safety precaution should be accomplished?

A

All valves are turned off and the gas pressure relieved

17
Q

What should be done to a heat treated aluminum part after welded repairs are completed?

A

The part must be re-heat treated.

18
Q

Welding magnesium can create a serious safety hazard, what is the nature of this hazard?

A

Magnesium burns with a very hot flame that is hard to extinguish

19
Q

what technique might be used to enable a tight-fitting inner sleeve to be inserted into a tubular repair?

A

The inner tube could be chilled with dry ice or in a freezer, while the outer tube be heated slightly with a torch