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Flashcards in Welding Deck (18):

What are some advantages of gas shielding arc welding

The weld is stronger, more ductile and corrosion resistant


Which method of welding is likely to cause buckling or warping of thin metal sheets

Tig welding


What is the purpose of shielding an arc weld with an inert gas

The gas prevents atmospheric oxygen and nitrogen from contaminating the weld


What is a common method of controlling expansion when welding a joint

Place tack welds along along the length of the joint


What type of flame is used when torch brazing and silver soldering

A natural flame


What is the purpose of the flux used with bronzing and silver soldering

The flux cleans the base metal by removing any oxide film


What just be done to 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 the preferred method of welding aluminum

Tig welding


What precautions must be observed in order to weld titanium

All traces of oxygen and nitrogen must be kept away from the weld area


Describe one type of repair that could be made to dented steel tube cluster joint

A formed steel patch plate can be attached to damaged area


How can a soft flame be obtained without reduced the heat output of the torch

Use a larger tip and adjust the gas pressure accordingly


What factors determine the amount of heat delivered by a gas welding torch

The size of the torch tip and the gas pressure


When oxyacetylene torch is extinguished which valve is turned off first

Turn of the acetylene gas valve first


When a gas welding project is completed what safety precautions should be accomplished

All the valves are turned off and the gas pressure are relieved


What should be done to a heat treated aluminum part after welded repairs are completed

The part must be re-heat treated


Welding magnesium can create a serious safety hazard what is the nature of this hazard

Magnesium burns with a very hot flame that is very hard to extinguish


What technique might be used to enable a tight fitting inner sleeve to be inserted into a tubular repair

The inner tube could be chilled with dry ice or in a freezer while the outer tube could be heated slightly


Name the three principle types of welding

Gas, tig, and electric resistance welding