1. The soldering iron tip is easily oxidized when it comes into contact with air at high temperatures. As long as we keep the soldering iron tip wrapped with tin at all times, we can prevent oxidation to a large extent and avoid the phenomenon of soldering.

2. When the electric soldering iron is not used so frequently, it is best to hang the soldering iron tip with tin, lower the temperature to below 50 degrees Celsius, and then adjust the temperature to the appropriate temperature next time it is used. This can prevent long-term dry burning. The soldering iron tip is oxidized and the service life of the heating core is extended.

3. Try to avoid using the electric soldering iron to hot things other than soldering wire, such as plastics, etc., because once the soldering iron tip sticks to other materials, it will definitely cause the paste to not be tinned.

4. The electric soldering iron is just a heating tool. We should try to avoid using the soldering iron tip to pry the pins of components, because this can easily cause trauma to the soldering iron tip. Once the soldering iron tip is deformed, we need to use a file or sandpaper to remove the soldering iron tip. Polish it flat before use.