4 common faults of soldering irons
1. The electric soldering iron does not generate heat after being powered on.
If the soldering iron does not heat up after being powered on, it means that the soldering iron has an open circuit fault. This fault may occur at the plug of the soldering iron in several places. The soldering iron core is broken, the lead of the soldering iron core is disconnected, and the power cord of the soldering iron is disconnected.
2. The soldering iron head does not eat tin.
The soldering iron tip does not eat. "Xi Pu saw that the newly purchased soldering iron tip was used directly without modification, resulting in the soldering iron tip not being tinned. The soldering iron tip used for a long time was not tinned, and the soldering iron tip was burnt and needed to be repaired.
3. The soldering iron is charged
A charged soldering iron is very dangerous for welders and may lead to serious electric shock accidents. Therefore, once the soldering iron is found to be charged, the power supply should be cut off immediately for inspection. There are several reasons why the soldering iron becomes electrified: the power cord of the soldering iron is connected to the terminal of the ground wire; the power cord falls off from the terminal of the soldering iron core and then touches the screw of the ground wire, causing the electrified power lead of the soldering iron head to become entangled and cause leakage; The power ground wire itself leaks electricity.
4. Pit appears on the soldering iron tip
When a soldering iron is used for a period of time, pits or an oxidized corrosion layer will appear on the soldering iron tip, causing the shape of the blade surface of the soldering iron tip to change. When encountering this situation, you can use a file to remove the oxide layer and pits, file them into their original shape, and then plate them with tin, and you can reuse them.
Maintenance of soldering iron
1. After unplugging the power supply, use some heat to put a little rosin on the soldering iron tip: the rosin can protect the soldering iron tip;
2. When the soldering iron is not in use, wrap it in white paper and place it in a cool and ventilated place: Is it necessary to wrap it in paper? Maybe not? It is always right to handle with care and avoid moisture;
3. Preventing the soldering iron tip from being in a "high temperature" state when not working to avoid excessive oxidation is a key measure to extend the life of the soldering iron tip (for non-constant temperature soldering irons);
4. Do not use inferior or overly acidic solder and flux, and pay attention to using a relatively stable power supply voltage, which is beneficial to the soldering tip and soldering iron.
