Sharing of soldering quality improvement methods for electric soldering irons
1. When using a soldering iron for welding, it is necessary to ensure that each solder joint is firmly welded and in good contact to ensure the welding quality.
2. A good solder joint requires the tin point to be bright, smooth and without burrs, and with a moderate amount of tin. The tin and the object to be soldered are fused firmly. There should be no false welding or false welding.
3. Pay attention to prevent the problems of false soldering and false soldering: false soldering is when only a small amount of tin is soldered at the solder joint, resulting in poor contact and occasional on and off. False welding means that it seems to be welded on the surface, but in fact it is not. Sometimes when you pull it out by hand, the lead will be pulled out of the solder joint.
Only through extensive and careful welding practice can these two major problems be avoided.
4. When soldering circuit boards, time must be controlled. If the time is too long, the circuit board will be burned or the copper foil will fall off. When removing components from the circuit board, you can stick the soldering iron tip on the solder joint and pull out the component after the tin on the solder joint melts.
5. Flux (rosin and soldering oil) is the key when welding. Fresh rosin and non-corrosive soldering oil help to complete the welding with high quality and make the surface smooth and beautiful. Use multi-purpose flux.
Precautions for welding operations
1) Lead accounts for a certain proportion in the composition of welding wire. Lead is harmful to the human body. Wear gloves when operating or wash hands after operation to avoid ingestion.
2) The chemical substances volatilized when the flux is heated are harmful to the human body. If the person's nose is too close to the soldering iron tip during operation, it is easy to inhale harmful gases. Generally, the distance between the nose and the soldering iron is no less than 30cm, and generally 40cm is appropriate.
3) Use an electric soldering iron to configure a soldering iron stand, which is generally placed on the right front of the workbench. After use, the electric soldering iron must be placed securely on the soldering iron stand, and make sure that wires and other objects do not touch the soldering iron tip.
