7 things to note when using a soldering iron
1. Keep the soldering iron tip clean and maintain welding. When the soldering iron tip is in a high temperature state for a long time, it is easy to oxidize and get a layer of black impurities. Therefore, it is important to use a wet sponge to wipe the soldering iron tip at all times. When not in use for a long time, tin should be added to the soldering iron tip to prevent oxidation and prevent the soldering iron tip from sticking tin.
2. When accelerating heat transfer and heating by increasing the contact area, the parts of the solder that need to be wetted with solder should be uniformly heated, rather than just heating a part of the solder, and the method of using a soldering iron to increase pressure on the solder should be avoided.
3. The evacuation of soldering iron requires timely evacuation, and the angle and direction of evacuation are related to the formation of solder joints.
4. Do not move or vibrate the solder before it solidifies, otherwise it can easily cause loose or virtual solder joints in the solder joint structure.
5. The amount of solder used should be moderate, and the solder wire is already filled with flux made of rosin and activator inside.
6. The amount of flux used should be moderate. Excessive use of rosin flux will inevitably require the removal of excess flux after welding, which prolongs the heating time and reduces work efficiency. When the heating time is insufficient, it is easy to form the defect of "slag inclusion".
7. Do not use soldering iron tips as tools for transporting solder (with soldering). Some people are accustomed to using soldering iron tips as tools for transporting solder for soldering, which can result in oxidation of the solder. Because the temperature of the soldering iron tip is generally above 300 ℃, the flux in the solder wire is prone to decomposition and failure at high temperatures, and the solder is also in a low-quality state of overheating.
