Welding technology is the basic technology that radio enthusiasts must master, and it is necessary to practice how much exercises can be skilled. 1. Use suitable solder, which should be used for low-melting tote solder wire for welding electronic components. 2, flux, dissolved with 25% of rosin in 75% alcohol (weight ratio) as flux. 3 One layer of tin. 4, welding method, grinding the pin of the pads and components, is polished, coated with the flux. Take a proper amount of solder, contact the solder joint, all melted and immersed the tie in the solder joint, and the electric iron head is gently removed from the pin. 5, welding time should not be too long, otherwise it is easy to burn the component, if necessary, use the forceps to clamp the pin to help heat dissipation. 6, the solder joint should be a sinusoidal peak shape, and the surface should be bright and smooth, the tin stab, and the amount of tin is moderate. 7. After the welding is completed, use alcohol to clean the residual flux on the circuit board to prevent the circuit after carbonization. 8, the integrated circuit should be finally welded, the electric iron should be reliably grounded, or after power off, the waste heat welding is used. Or use the integrated circuit's dedicated socket, and then insert the integrated circuit inserted up. 9, the soldering iron should be placed on the soldering iron frame.
