Common malfunctions of electric soldering irons
1. The electric soldering iron does not generate heat after being powered on
If the electric soldering iron does not generate heat after being powered on, it indicates that there is an open circuit fault in the soldering iron. This fault may occur at several locations where the soldering iron plug is broken, the soldering iron core lead is open, and the power cord of the soldering iron is open.
2. The soldering iron head does not eat tin
The newly purchased soldering iron head is used without any trimming, resulting in the soldering iron head not being soldered. If the soldering iron head is not soldered for a long time, it will burn and need to be repaired.
3. Electric soldering iron charged
Electric soldering iron is very dangerous for welding personnel as it can lead to electric shock accidents. Therefore, once an electric soldering iron is found to be electrified, the power should be immediately cut off for inspection. There are several reasons why an electric soldering iron is charged: the power cord of the soldering iron is connected to the terminal of the grounding wire; The power cord detached from the soldering iron core terminal and then touched the screw of the grounding wire, causing the live power lead of the soldering iron head to entangle and cause leakage; The power ground wire itself has leakage.
4. Dents appear on the soldering iron tip
After using an electric soldering iron for a period of time, the tip of the soldering iron will have pits or an oxide corrosion layer, causing a change in the shape of the edge of the soldering iron tip. When encountering this situation, you can use a file to remove the oxide layer and pits, and file them back into their original shape. Then, tin plating can be applied, and they can be reused.
Maintenance methods for charged iron heads
(1) The reason for the live fault of the soldering iron head is not only due to the wrong connection of the power line to the grounding wire terminal, but also because when the power line falls off the soldering iron core terminal and touches the screw of the grounding wire, it causes the soldering iron head to become live.
(2) This type of malfunction can easily cause electric shock accidents and damage components. To prevent the power cord from falling off, it is necessary to regularly check whether the pressure screw on the electric soldering iron handle is loose or missing. If it is loose or missing, it should be matched in a timely manner.
