WELDING
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| Why is TIG (GTA) welding preferred over oxy-acetylene welding for building and repairing welded steel tube aircraft structure? | show 🗑
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| show | Spot welding and seam welding.
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| Why is it important that the pressure of the gas in an acetylene cylinder be kept low? | show 🗑
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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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| show | Welding flux is corrosive and it must be removed to keep the metal from corroding.
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| show | The inert gas forms a shield to keep oxygen away from the weld puddle so oxides cannot form and weaken the weld.
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| show | In brazing, the base metal is not melted, but is covered with a low-melting-point alloy. In welding, the base metal is melted.
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| What is used as the electrode in TIG (GTA) welding? | show 🗑
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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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| What kind of flame should be used when gas welding aluminum? | show 🗑
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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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| What kind of flame should be used when gas welding stainless steel? | show 🗑
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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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| What must be done to an aircraft fuel tank before it can be repaired by welding? | show 🗑
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