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Welding
Airframe written
| Question | Answer |
|---|---|
| High pressure cylinders used to transport and store acetylene must | contain acetone |
| Why should a carburizing flame be avoided when welding steel? | it hardens the surface |
| Engine mount members should preferably be repaired by using a | larger diameter tube with fishmouth and rosette welds. |
| Which of the following can normally be welded without adversely affecting strength? | SAE 4130 chrome/molybdenum tubing. |
| When welding or cutting, the acetylene pressure gauge should never be set higher than` | 15 psi |
| A resurfaced soldering iron cannot be used effectively until after the working face has been | tinned |
| Where should the flux be applied when oxyacetylene welding aluminum? | Painted on the surface to be welded and applied to the welding rod. |
| Why is it necessary to use flux in all silver soldering operations? | To chemically clean the base metal of oxide film. |
| In selecting a torch tip size to use in welding, the size of the tip opening determines the | amount of heat applied to the work |
| Which statement best describes magnesium welding? | Filler rod should be the same composition as base metal. |
| Oxides form very rapidly when alloys or metals are hot. It is important, therefore, when welding aluminum to use a | flux |
| Which statement concerning a welding process is true? | The inert-arc welding process uses an inert gas to protect the weld zone from the atmosphere. |
| Which statement best describes magnesium welding? | It can be welded successfully using the same type of joints that are used for aluminum. |
| Oxygen and acetylene cylinders are made of | steel |
| If too much acetylene is used in the welding of stainless steel, | the metal will absorb carbon and lose its resistance to corrosion. |
| Annealing of aluminum | removes stresses caused by forming |
| The oxyacetylene flame used for aluminum welding should | be neutral and soft |
| A very thin and pointed tip on a soldering copper is undesirable because it will | cool to rapidly |
| A welding torch backfire may be caused by | a loose tip |
| How should a welding torch flame be adjusted to weld stainless steel? | Slightly carburizing |
| Edge notching is generally recommended in butt welding above a certain thickness of aluminum because it | aids in getting full penetration of the metal and prevents local distortion |
Created by:
mattpayne001