Methods for reduction of solder tip and core oxidation rates
1. Test the resistance size
Before using the soldering iron, measure the resistance of the power plug to determine if the soldering iron is usable.
The resistance of an electric soldering iron is several thousand ohms, indicating that it is usable. If the resistance is zero or infinite, it cannot be used. If the resistance is zero, it indicates that there is a short circuit inside the soldering iron. If the resistance is infinite, it means that there is an open circuit inside the soldering iron.
2. Tin plating protection
When using a new soldering iron for the first time, ensure that the tip of the soldering iron is shiny. Heat it up and melt the solder while dipping it in rosin. Contact the solder wire multiple times to evenly coat the tip with a layer of solder. It can facilitate subsequent use and prevent oxidation of the soldering iron tip.
The old soldering iron has been used for a long time, and there will be a layer of oxide on the surface of the soldering iron tip, which makes it difficult for the soldering iron tip to eat tin.
The oxide on the surface of the soldering iron tip can be removed with fine sandpaper or file to make its surface shiny. Then, following the treatment method of the new soldering iron, evenly coat the surface of the soldering iron tip with a layer of solder.
3. The problem of soldering iron not eating tin
When a soldering iron encounters the problem of not eating tin, it is generally not necessary to consider whether it is caused by insufficient oxygen. Oxygen is not related to the heating of the soldering iron, and the soldering iron heats and melts the solder wire through alternating current.
Electric soldering iron does not eat tin because if it is not used for a long time after being powered on, it will accelerate the oxidation of the soldering iron core and burn it out, shortening its service life. At the same time, it can cause the soldering iron tip to oxidize or burn out due to prolonged heating.
As a result, the problem of soldering iron not eating tin occurred. During the process of not eating tin, oxidation reaction occurred, and the substance reacted chemically with oxygen, among which oxygen provided oxygen.
When the power on time is too long and the temperature rises sharply, providing reaction conditions for the oxidation reaction will accelerate the oxidation rate of the soldering iron tip and core.
