The solution to the problem that the soldering iron tip does not stick to the solder
1. Prepare high-quality solder, rosin, and high-temperature sponge. Turn on the electric soldering iron, when the temperature is high, insert the soldering iron tip into the rosin, and shake it back and forth. Then take out the prepared solder and melt it in contact with the tip of the soldering iron.
2. If the soldering iron tip has been oxidized and blackened, you can prepare a file (if there is no file, you can also prepare sandpaper). Use a file or sandpaper to polish the soldering iron tip to remove the black oxide layer on the surface of the soldering iron tip.
3. The tip of the soldering iron is generally made of metallic copper. After oxidation, black copper oxide (CuO) will form on the surface. Copper oxide is non-stick solder. You can insert the tip of the soldering iron into a 90% alcohol solution for treatment. It should be noted that it should be put in the unheated state, then energized, and taken out after 1-2 minutes, the problem of oxidized non-stick solder can be solved.
How to use a soldering iron correctly?
1. The first point to talk about is the use of this flux (soldering paste). Most of the fluxes are acidic fluxes, which have a certain oxidation effect on the tip of the soldering iron. Try not to use them.
Here I recommend a more useful method for making flux, that is to grind rosin into powder and pour it into alcohol solution for full dissolution. This ratio is generally 40% rosin powder plus 60% alcohol solution, and there is no problem with a little more rosin. It should be noted that medical alcohol cannot be used, and an alcohol solution of more than 90% should be used, and the container should be kept sealed.
2. The second point is the power outage problem. Many friends are not used to unplug the power plug in time after use. When the soldering iron tip is in a heated state, it will naturally oxidize the non-stick solder. Therefore, daily use needs to be done, and the power supply should be cut off in time after use.
3. The third point is the tinning of the soldering iron tip that many people ignore. In order to save trouble, most of the soldering irons will not tinn the soldering iron tip after using it. Even after the tip of the soldering iron is powered off, its temperature is very high, and it will oxidize with the air, and tinning it before power off can prevent it from being oxidized.
4. The fourth point is about soldering tin. There are good soldering tins and bad soldering tins. In order to save money, most people buy cheap solder wire. Although it is cheap, the quality is very worrying. Solder slag is easy to appear, and even becomes solder slag when heated.
It not only affects the quality of welding, but also is very detrimental to the tip of the soldering iron. Therefore, it is very important not to be greedy for small and cheap. It is very important to buy a good solder wire. Generally speaking, it is almost enough to buy a solder wire that costs 60 yuan a catty. The author used the 500g solder wire bought for 65 yuan, which is very easy to use, the solder joints are smooth, and there is no tin slag.
5. The fifth point and the last point I want to emphasize is the soldering iron tip. A good soldering iron tip can achieve twice the result with half the effort. For our daily use, we can use a round tip or a knife tip, but we need to buy a better soldering iron tip. For example, the soldering iron tip made of copper is very durable and has strong oxidation resistance.
