WorksheetsBrazing and Welding Concepts
Total questions: 15
Worksheet time: 8mins
What is the main process being demonstrated in this workshop?
Welding
Soldering
Brazing
Forging
What is the name of the large orange unit used for heating and joining metals?
Welding machine
Metal furnace
Brazing hearth
Annealing oven
What is the purpose of the small V-cut in one of the steel rods?
To make the rod lighter
To help align the other rod
To create a weak point for bending
To allow for easier painting
What is the approximate melting temperature of steel for welding?
Just over 100 degrees Celsius
Just over 500 degrees Celsius
Just over 1400 degrees Celsius
Just over 2000 degrees Celsius
What is the approximate temperature used for brazing?
Less than 100 degrees Celsius
Less than 500 degrees Celsius
Less than 1000 degrees Celsius
Less than 1500 degrees Celsius
In brazing, what happens to the two pieces of metal being joined?
They melt and mix together.
They change their chemical composition.
They do not change their form.
They become brittle.
What is the main difference between welding and brazing in terms of how they join metals?
Brazing melts the base metals, welding does not.
Welding melts the base metals, brazing does not.
Both melt the base metals.
Neither melts the base metals.
What type of gas is used to power the brazing hearth?
Propane
Butane
Natural gas
Acetylene
What are the special bricks inside the brazing hearth designed to do?
Absorb moisture
Disintegrate with heat
Trap flames and keep heat
Provide a soft surface
What is the function of the extraction system above the brazing hearth?
To cool the metals
To provide fresh air
To remove smoke, fumes, and gases
To make the flames brighter
What is the small, constantly running flame used to light the brazing torch called?
Main flame
Pilot light
Starter flame
Ignition flame
Which color pipe on the brazing torch carries natural gas?
Blue
Red
Yellow
Green
Which color pipe on the brazing torch carries compressed air?
Blue
Red
Yellow
Green
When lighting the brazing torch, what is the correct order to turn on the gases?
Air first, then gas.
Gas first, then air.
Both at the same time.
It doesn't matter which is first.
What is the purpose of dipping the heated brazing rod into powdered flux?
To make it stronger
To cool it down
To help the liquid metal flow and clean the surfaces
To change its color
