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WELDING

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Why is TIG (GTA) welding preferred over oxy-acetylene welding for building and repairing welded steel tube aircraft structure?   show
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What are two types of electric resistance welding used in aircraft construction?   show
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show Acetylene gas becomes unstable when it is kept under pressure of more than about 15 psi.  
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show The size of the orifice in the torch tip.  
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show An oxidizing flame has a pointed inner cone, and the torch makes a hissing noise. A neutral flame has a rounded inner cone, and there is no feather around the inner cone. A reducing flame has a definite feather around the inner cone.  
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What is meant by tack welding?   show
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Why must thick plates of metal be preheated before they are welded?   show
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Why is it important that all traces of the welding flux be removed after a piece of aluminum or magnesium is welded?   show
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What is the function of the inert gas that is used in TIG (GTA) and MIG (GMA) welding?   show
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What is the difference between brazing and welding?   show
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show A small-diameter tungsten wire.  
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Is a heat-treated steel part normally repairable by welding?   show
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What is the function of the flux in brazing and soldering?   show
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show 60/40 resin-core solder.  
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show A soft, neutral oxy-hydrogen flame is recommended.  
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What is an acceptable acetylene line pressure to use when welding with an oxy-acetylene rig?   show
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show A slightly carburizing flame.  
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How much should the bead penetrate the material when welding two pieces of steel with a butt weld?   show
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What is meant by a soft flame?   show
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show The gas fumes must all be purged from the tank by running live steam through it for at least 30 minutes, by soaking it in hot water, or by filling it with nitrogen or carbon dioxide.  
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Created by: Aima2019
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