Brazing Metals Quiz 1 Brazing is used to

Brazing Metals Quiz

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

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

3. Why would it be impossible to braze aluminium with normal brass brazing rods? Because Aluminium is too hard 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

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

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

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

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

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

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

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