Welding Questions and Answers 100%
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Name three principle types of welding. ✔✔Gas welding, electric arc welding, and electric
resistance welding.
What are some advantages of gas shielded arc welding? ✔✔The weld is
...
Welding Questions and Answers 100%
Pass
Name three principle types of welding. ✔✔Gas welding, electric arc welding, and electric
resistance welding.
What are some advantages of gas shielded arc welding? ✔✔The weld is stronger, more ductile,
and more corrosion resistant.
Which method of welding is less likely to cause buckling or warping of thin metal sheets?
✔✔Electric arc (or TIG) welding.
What is the purpose of shielding an arc weld with and inert gas? ✔✔The gas prevents
atmospheric oxygen and/or nitrogen from contaminating the weld.
What is a common method of controlling expansion when welding a joint? ✔✔Place tack welds
along the length of the joint.
What is the effect of inadequate penetration on a weld? ✔✔The weld will be weak.
What is the purpose of the flux used with brazing and silver soldering? ✔✔The flux cleans the
base metal by removing any oxide film.
What type of flame is used when torch brazing or silver soldering? ✔✔A neutral flame.
What must be done to soldering iron tip to increase the amount of heat transferred from the tip to
the work? ✔✔The tip must be clean of all contaminates and properly tinned.
What is the preferred for welding aluminum? ✔✔Tungsten Inert Gas (TIG)welding.
What is the preferred method of welding magnesium? ✔✔Tungsten Inert Gas (TIG)welding.
What precautions must be observed in order to weld titanium? ✔✔All traces of oxygen and
nitrogen must be kept away from the weld area.
Describe one type of repair that could be made to a dented steel tube cluster joint? ✔✔A formed
steel patch plate could be welded over the damaged area.
How can a soft flame be obtained without reducing the heat output of the torch? ✔✔Use a larger
tip and adjust the gas pressure accordingly.
What factors determine the amount of heat delivered by a gas welding torch? ✔✔The size of the
torch tip and gas pressure.
When an oxyacetylene torch is extinguished, which valve is turned off first? ✔✔Turn off the
acetylene gas valve first.
When a gas welding project is completed, what safety precautions should be accomplished?
✔✔All the valves are turned off and the gas pressure are relived.
What should be done to a heat-treated aluminum part after welded repairs are completed?
✔✔The part must be re-heat treated.
Welding magnesium can create a serious safety hazard. What is the nature of this hazard?
✔✔Magnesium burns with a very hot flame that is very hard to extinguish.
What technique might be used to enable a tight-fitting inner sleeve to be inserted into a tubular
repair? ✔✔The inner tube could be chilled with dry ice or in a freezer while the outer tube could
be heated slightly with a torch.
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