Q. During soldering operation, the main function of solder iron is to (Solved)
1. Heat the metals to be jointed
2. Heat the solder
3. Heat the flux
4. Remove impurities
5. All of the above
- b. Heat the solder
1. Heat the metals to be jointed
2. Heat the solder
3. Heat the flux
4. Remove impurities
5. All of the above