Before usage, new soldering iron treatment
A new soldering iron cannot be used immediately. The tip of the soldering iron must be treated before it can be used normally. That is to say, the tip of the soldering iron should be coated with a layer of solder before use. The specific method is: first use a file to file the tip of the soldering iron into a certain shape as required, then connect the power supply, when the temperature of the tip of the soldering iron rises to the point where it can melt tin, apply rosin on the tip of the soldering iron, and then apply it after the rosin smokes. Apply a layer of solder, and do this two to three times, so that the surface of the soldering iron tip is completely covered with a layer of tin and it can be used.
When the soldering iron is used for a period of time, an oxide film will be formed on the blade surface of the soldering iron tip and its surroundings, which will make it difficult to "eat tin". At this time, the oxide film can be removed and re-plated with solder.
Adjusting the length of the soldering iron tip
After selecting the power of the soldering iron tip, it has basically met the needs of the soldering temperature, but it still cannot fully meet the needs of the components installed in the printed circuit board. For example, when welding integrated circuits and transistors, the temperature of the soldering iron tip should not be too high, and the time should not be too long. At this time, the length of the soldering iron tip inserted on the soldering iron core can be properly adjusted to control the temperature of the soldering iron tip.
Selection of soldering iron tip
There are two types of soldering iron tips, straight and curved. When the pen grip method is adopted, the electric soldering iron with a straight tip is more flexible to use, and is suitable for soldering in circuits with many components. It is more suitable to hold the electric soldering iron with curved iron head, and it is mostly used for soldering when the circuit board is vertical to the desktop.
Prevent "eating tin"
It is not easy to energize the soldering iron for a long time without using it, because it is easy to accelerate the oxidation of the soldering iron core and burn it out, and it will also cause the soldering iron tip to oxidize due to prolonged heating, and even be "burned to death" and no longer "eat tin".
Replacing the Soldering Iron Core
When replacing the soldering iron core, be careful not to connect the leads incorrectly, because the electric soldering iron has three terminals, one of which is grounded, and the other two are connected to the two leads of the soldering iron core (these two terminals are directly connected to the 220 through the power cord. connected to a volt AC power supply). If the 220-volt AC power cord is wrongly connected to the binding post of the ground wire, the electric soldering iron shell will be charged, and it will also be charged when being welded, so that an electric shock accident will occur.
Choose Flux
When soldering an electric soldering iron, it is best to use rosin flux to protect the soldering iron tip from corrosion. Zinc oxide and acidic solder oil are more corrosive to the soldering iron tip, which will shorten the life of the soldering iron tip, so they are not commonly used.
