When we are soldering, we find that the tip of the soldering iron cannot get tin on, or it just slips off after the tin is applied. You will guess whether there is a problem with the tin material? In fact, there are many reasons for the soldering iron not to stick to tin, such as temperature, impurities on the soldering iron tip, oxidation of the soldering iron tip, etc. These are the main reasons for the soldering iron tip not to touch tin.
1. Let's review whether the soldering iron tip is used to iron hot melts such as plastics, glues, films, etc., so that the tin originally hanging on the soldering iron tip slips off, thus causing the soldering iron tip to be oxidized. If there is no tin, we will energize the soldering iron head for a period of time to melt the hot melt with a higher temperature, and then remove the hot melt on the soldering iron head with a wet sponge.
2. We first clean the tip of the soldering iron, remove the sundries on the tip of the soldering iron, and clean it with alcohol after cooling. Then dip the tip in rosin while heating, and tin the tip immediately. Be careful not to sand the tip with a blade or sandpaper, as the protective layer of the tip will be sanded off, which will shorten the life of the tip.
3. If it is a lead-free soldering iron tip, it is not omnipotent, because the soldering iron is only suitable for welding, and many people use it to melt plastic. When heating the plastic, the protective layer on the lead-free soldering iron tip is easily damaged, and there is plastic residue to damage the tip of the soldering iron.
4. After the continuous upgrading of the soldering iron, the lifespan of the soldering iron tip is very long now, but the phenomenon that the soldering iron tip does not touch the tin will also occur. In addition to its own reasons, there is also the high temperature, which will also easily cause violent oxidation the soldering iron tip. The use of incorrect or defective cleaning methods, will cause the tip of the soldering iron not to stick to the tin.
The reasons why the soldering iron tip does not stick to tin:
1. When the tip of the soldering iron is at an excessively high temperature for a long time, the tin attached to the surface is quickly melted and volatilized, resulting in violent oxidation. High temperature requires more tin;
2. Before using, the tip of the soldering iron is not tinned. After soldering, the tip of the soldering iron should be tinned for protection;
3. The reason for the solder is that impure solder is used, and the flux in the solder wire is interrupted or uneven;
4. Scrub the tip of the soldering iron on a dry or dirty sponge or cloth;
5. The 'dry burning' is always on at high temperature without tinning the tip, and the surface of the tip has no tin, which will cause rapid oxidation;
6. The flux used is highly corrosive, causing rapid oxidation of the tip of the soldering iron.
7. The flux used is neutral, and the oxide on the tip of the soldering iron is not cleaned up;
The above are the main reasons and solutions for the soldering iron tip not sticking to tin during soldering. From the above, we understand that the reason why the soldering iron tip does not stick to tin is because we do not know enough about the soldering iron tip. The reason, as long as you pay a little attention when welding, you will find that these problems can actually be avoided.
If you have other questions about welding, you can contact AiXun's soldering technicians to help you with welding.
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