Solution 2: Rubbing

1. If the temperature of the electric soldering iron is between 320-420 degrees Celsius and the soldering iron tip is oxidized, turn off the power and use a knife or sandpaper to remove the oxide.

2. Why is the wire joint not soldered? The normal situation is that the household appliance is broken and you may have been using it for a long time. During prolonged use, there may be current passing through the connector of the wire head and external dust entering, resulting in aging, oxidation, and dust on the wire head, so you welded it on.

3. Normal welding involves using an electric soldering iron with a temperature of around 380 degrees Celsius. It is not a problem to raise the temperature of the soldering wire head slightly, and whether the soldering iron head is oxidized. If all the above issues have been solved, the main thing to check is that some of your wire heads are enameled wire. You need to use a small knife to scrape off the conductive insulation paint on the outer layer of the enameled wire, and then a little tin on the wire head can be firmly welded.

4. When the electric soldering iron does not need to be turned off, please put a little tin on the head of the soldering iron and do not remove it to prevent oxidation of the soldering iron tip. This way, you will be able to handle it the next time you use it. Finally, it should be emphasized that doing it yourself is a good thing, but safety must be guaranteed first!