Brazing Metals Quiz

Steel to Steel Copper To Copper Aluminium to Aluminium Brass To Brass 1.Brazing is used to join which two metals?

2. What is the filler rod made from? Brass Iron Steel Aluminium Tin Copper Silver

Because Aluminium has too low a melting point and would melt before the brass Because Aluminium has too high a melting point and will not melt. Because aluminium is non ferrous Because Aluminium is too hard 3.Why would it be impossible to braze aluminium with normal brass brazing rods?

4.At approximately what temperature does brazing take place. 1100˚C 400˚C 700˚C 500˚C 900˚C 200˚C 300˚C

5. Which of the following abrasive materials would be used to clean the steel before brazing? Aluminium Oxide paper Wet & Dry Silicon Carbide paperEmery Cloth Wire wool

To speed up the brazing process To clean the metal by dissolving any oxides already present To make the final joint stronger To prevent the steel oxidising during the brazing process 6.What is the flux used for ? (Click on the two correct answers)

To speed up the brazing process To clean the metal by dissolving any oxides already present To make the final joint stronger To prevent the steel oxidising during the brazing process 6.What is the flux used for ? (Click on the two correct answers) And the second reason is….

Cherry Red Dull red White Hot As hot as possible 7. The correct temperature is reached when the work piece is ……

Does not matter Under cold water Slowly 8. When completed the work piece should be cooled ….

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