Welding Flashcards
What is a saftey hazard with welding magnesium?
combustion of the material
How is a soft flame obtained without reducing thermal output?
larger tip and close valves until the neutral flame is soft, quiet, and steady
What should be turned off first when extinguishing a torch?
acetylene or manufacturer’s directions
What is the result of insufficient penetration when welding?
low strength weld
What is the more popular name for Gas Tungsten Arc Welding?
TIG
What is the function of the inert gas used in the TIG welding process?
shields the weld from the atmosphere and prevents oxidation
What gases can be used as shielding gases for MIG or TIG welding?
argon or helium
How much penetration should be present when inspecting a butt weld?
100%
When inspecting a weld bead for quality of weld, what should you look for?
smoothness, uniformity, smooth taper, no oxide, no blowholes, no cracks or distortion
What type of welding current is frequently used when TIG welding aluminum?
High frequency AC, reverse current DC
What is the preferred method of welding magnesium?
TIG
What type of flame is used for silver soldering?
soft neutral or slightly reducing
What are three general types of welding?
gas, electric arc, electric resistance
What method can be used to insert a tight fitting inner sleeve into a tubular repair?
heat the outer tube and cool the inner
What type of repair could be made for dented steel tubing at a cluster?
weld a formed steel patch plate over damaged area
