Welding Flashcards
What is the preferred method of welding magnesium?
Gas Shielded Arc Welding
What is a safety hazard associated with welding magnesium?
If ignited, it is extremely hard to extinguish
What must be done in the weld zone to successfully weld titanium?
must be shielded with an inert gas
Why is it necessary to use flux in all silver soldering?
To have the base metal chemically clean without the slightest film of oxide
What type of flame is used for silver sodering?
A soft, neutral or slightly reducing flame
What type of repair could be made for a dented steel tube cluster joint?
Weld a formed steel patch plate over the dented area
What are the three general types of welding?
Gas, Electric Arc, and Electric Resistance
How is a soft flame obtained without reducing thermal output?
By using a larger tip and adjusting the pressures
What is the most extensively used method of welding aluminum
Gas shielded arc welding
What safety precaution should be taken when gas welding has been completed?
Turn off the valves and relieve all pressure
What valve should be turned off first when extinguishing a torch?
The acetylene to allow gas in the tip to burn out
What procedure will control expansion when welding a joint?
Tack welding at intervals along the joint
What must be done with heat treated aluminum alloys after a welding repair has been made?
They must be reheat treated
What is the result of insufficient penetration?
A low strength weld
What is gas shielded arc welding?
A gas is used as a shield around the arc to prevent the atmosphere from contaminating the weld
