Common faults of electric soldering iron_The maintenance method of electric soldering iron
1. The electric soldering iron does not heat up after being energized
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 wire of the soldering iron core is broken, and the power cord of the soldering iron is broken.
2. The tip of the soldering iron does not eat tin
Do not eat soldering iron tip "Tin Pu sees that the newly purchased soldering iron tip is used directly without trimming, resulting in no tinning of the soldering iron tip. The soldering iron tip that has been used for a long time is not tinned, and the soldering iron tip is burnt to death and needs to be repaired.
3. The electric soldering iron is charged
Electric soldering iron is very dangerous for welding personnel, and serious electric shock accidents will occur. Therefore, once the electric soldering iron is found to be electrified, the power supply should be cut off immediately for inspection. There are several reasons why the electric soldering iron is electrified. The power cord of the electric soldering iron is connected to the terminal of the grounding wire; the power cord falls off from the terminal of the soldering iron core and then touches the screw of the grounding wire, causing the electric power lead wire of the soldering iron head to be entangled and cause leakage; The power ground itself leaks electricity.
4. There are pits on the tip of the soldering iron
When the electric soldering iron is used for a period of time, pits or oxidized corrosion layers will appear on the soldering iron tip, which changes the shape of the blade surface of the soldering iron tip. In this case, the oxide layer and pits can be filed off with a file, and filed into the original shape, and then tinned, and then it can be reused.
Repair method of electric soldering iron
1. The maintenance method that the soldering iron does not heat up after being powered on
(1) When the soldering iron is energized, it is found that the soldering iron head is not hot. Generally, the power cord has fallen off or the core wire of the soldering iron is broken. If it does not move, it means that there is an open circuit fault.
(2) First check whether the lead wire of the plug itself is open circuit phenomenon, if not, you can remove the bakelite handle, and then use a multimeter to measure the two leads of the soldering iron core, if the pointer of the multimeter still does not move, it means that the soldering iron core is damaged, and the soldering iron should be replaced Heart.
(3) The resistance between the two leads of the 35W internally heated soldering iron core is 1. Around Skfl, if the measured resistance value is normal, it means that the soldering iron core is good, and the fault occurs in the power lead and the plug itself, and most of the faults are lead wire breakout. It is necessary to replace the soldering iron core, insert a new soldering iron core of the same specification into the connecting rod, fix the lead wire on the fixing screw, and tighten the terminal. short circuit.
2. Maintenance method of live iron head
(1) The reason for the electrified fault of the soldering iron tip is that, in addition to the wrong connection of the power line to the grounding line terminal, there is another reason, that is, when the power line falls off from the terminal of the soldering iron core, it touches the screw of the grounding line again. As a result, the tip of the soldering iron is charged.
(2) This kind of failure may easily cause electric shock accidents and damage components. In order to prevent the power cord from falling off, it is necessary to regularly check whether the crimping screws on the handle of the electric soldering iron are loose or missing. Prepared in time.
