Difference between Soldering and Brazing
| | Soldering | Brazing |
1. | Low temperature is sufficient. | High temperature is required. |
2. | Temperature requirement is up to 450°C in soldering joints. | Temperature might go to 600°C in brazing joints. |
3. | Soldered parts are to be clean by water. | Brazed parts are to be allowed to cool slowly. |
4. | Joints are not extremely strong. | Joints are extremely strong. |
5. | Chlorides of zinc and rosin are use as flux. | Ash or borax is use as flux. |
6. | Preheating of workpieces before soldering is good for creation good quality joint. | Preheating is desirable to make strong joint as brazing is carried out at comparatively low temperature. |
7. | Solder is used in this process. | Spelter is used in this process. |
8. | Proper only for thin similar sheet metals. | Proper even for thicker similar or dissimilar metal parts. |
9. | No heat treatment is necessary. | No heat treatment is necessary after brazing. |
10. | Costs are less. | Costs is more. |
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