Airframe Chapter 04 Flashcards

1
Q

Name the three principle types of welding.

A

Gas welding, electric arc welding, and electric resistance welding.

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2
Q

What are some advantages of gas shielded arc welding?

A

The weld is stronger, more ductile, and more corrosion resistant.

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3
Q

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

A

Electric arc (or TIG) welding.

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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.

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5
Q

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

A

Place tack welds along the length of the joint.

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6
Q

What is the effect of inadequate penetration on a weld?

A

The weld will break.

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7
Q

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

A

The flux cleans the base metal by removing any oxide film.

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8
Q

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

A

A neutral flame

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9
Q

What must be done to a 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.

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10
Q

What is the preferred method for welding aluminum?

A

Tungsten inert gas (TIG) welding.

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11
Q

What is the preferred method of welding magnesium?

A

Tungsten Inert Gas (TIG) welding.

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12
Q

What precautions must be observed in order to weld titanium?

A

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

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13
Q

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

A

A formed steel patch plate could be welded over the damaged area.

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14
Q

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

A

Use a larger tip and adjust the gas pressure accordingly.

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15
Q

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

A

The size of the torch tip and the gas pressure.

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16
Q

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

A

Turn off the acetylene gas valve first.

17
Q

When a gas welding project is completed, what safety precautions should be accomplished?

A

All the valves are turned off and the gas pressures are relieved.

18
Q

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

A

The part must be re-heat treated.

19
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 very hard to extinguish.

20
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 could be heated slightly with a torch.