3. B]Differentiate between the Brazing and Soldering Process.
Answer:-
Brazing and Soldering Process
| SL NO | Soldering | Brazing |
| 1 | Soldering joints are weakest joints out of three. Not meant to bear the load. Use to make electrical contacts generally. | Brazing joints are weaker than welding joints but stronger than soldering joints. This can be used to bear the load up to some extent. |
| 2 | Temperature requirement is up to 450°C in soldering joints | Temperature may go to 600°C in brazing joints. |
| 3 | Heating of the work pieces is not required. | Work pieces are heated but below their melting point. |
| 4 | Cost involved and skill requirements are very low. No heat treatment is required. | Cost involved and sill required are in between other two. No heat treatment is required after brazing |
| 5 | Preheating of workpieces before soldering is good for making good quality joint. | Preheating is desirable to make strong joint as brazing is carried out at relatively low temperature. |
| 6 | No change in mechanical properties after joining | May change in mechanical properties of joint but it is almost negligible. |
SOLDERING :
BRAZING:
