Introduction to methods to improve the welding quality of electric soldering iron
1. When using an electric soldering iron for welding, it is necessary to ensure that each solder joint is firmly welded and in good contact to ensure the quality of the welding.
2. Good solder joints require bright, smooth, and burr free solder joints with moderate solder content. Tin and the object being welded are firmly fused. There should be no virtual welding or false welding.
3. Pay attention to preventing the problems of virtual soldering and false soldering: Virtual soldering refers to the situation where only a small amount of solder is attached to the solder joint, resulting in poor contact and intermittent continuity. Fake soldering refers to the phenomenon where the surface appears to be soldered, but in reality, it is not soldered. Sometimes, when pulled out by hand, the lead wire 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, it is necessary to control the time. If the time is too long, the circuit board will be burnt or cause the copper foil to peel off. When disassembling components from the circuit board, the soldering iron tip can be attached to the solder joint, and after the tin on the solder joint melts, the component can be pulled out.
5. Flux (rosin and soldering oil) is crucial during welding. Fresh rosin and non corrosive soldering oil help to achieve high-quality soldering and can make the surface smooth and beautiful. Use more soldering flux.
How to deal with electric soldering iron that doesn't eat tin
Once the soldering iron tip does not stick to tin and is severely oxidized, it can be wiped a few times on cement ground or lightly on wood. After heating, it should be dipped in rosin first and then in tin. With rosin, the entire soldering iron tip can be covered with tin to facilitate timely use.
The larger the wattage of the soldering iron tip, the more it oxidizes after being powered on for a long time. The solution is to reduce the voltage, or you can use a few rectifier diodes to follow the same voltage reduction principle as in electric hotpot, electric blanket, and electric heater. Find a knob to switch the adjustment switch, and then find a plastic box to assemble a soldering iron voltage regulator yourself.
