Welding Flashcards
Name the three principle types of welding?
Gas welding, electrical arc welding, electrical resistance welding.
what are some advantages of gas shielded arc welding?
The weld is strong, ductile and more corrosion resistant
Which method of welding is less likely to cause buckling or warping of thin metal sheets?
Electrical arc welding, or TIG welding
What is the purpose of shielding an arc weld with an 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 a tack weld 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 & silver soldering?
Flux cleans the base metal by removing any oxide film
What type of flame is used when torch brazing or silver soldering?
Neutral flame
What must be done to the 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 preferred method of welding aluminum and/ or magnesum?
Tungsten Inert Gas (TIG) welding
What precautions must be observed in order to weld titanium?
All traces of oxygen & 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 could be welded over the damaged area
How can a soft flame be obtained without reducing the heat output of the torch?
Use a large tip and adjust the gas pressure accordingly
What factors determine the amount of heat delivered by a gas welding torch?
the size of the tip and the gas pressure
When an oxyacetylene torch is extinguished, which valve is turned off first?
turn off the acetylene gas valve first
