Why does the tin consistently adhere to the soldering head while using an electric soldering iron?
If the welding head of the electric soldering iron does not eat tin, the tip of the soldering iron will soon be oxidized due to high temperature. Commonly known as burnt to death! After oxidation, the tip of the soldering iron turns black, and it is quite difficult to melt and solder first! You will find that the temperature of the old iron is very high, and even small debris can cause sparks! But the solder can't be hot! So the soldering iron tip must retain a layer of tin film to protect the soldering iron tip from oxidation. When welding, the heat can be transferred out in time to ensure the welding quality.
And you said that there will always be excess solder on the tip of the soldering iron, which is also a normal phenomenon. When soldering, the melted solder will always flow from the place with low temperature to the place with high temperature. So we can take advantage of this feature. When repairing the circuit board and removing parts, use a soldering iron to suck away part of the solder on the original pins. Of course, it will be better to use a tin absorber and a tin absorber to remove the solder.
After the soldering iron tip absorbs excess solder, we can use the method of shaking the soldering iron gently, and use inertia to shake off the excess solder on the soldering iron tip. Generally, dip the soldering iron tip in rosin, and then shake your wrist quickly , Throw the solder into the rosin box. And when we want to eat tin for the original pins, or tin for the wires, or solder the originals on the circuit board, we can use the tip of the soldering iron to eat solder in the rosin, and directly eat tin or solder for the original pins to make up for it. welding etc.
When the solder is insufficient, you can consider supplementing it with tin wire.
