Reasons and solutions for non tin sticking of electric soldering iron tips
During the lead-free welding process, there may be situations where the electric soldering iron tip does not stick to tin. In addition to the quality issues of the electric soldering iron head itself, we can also identify the reasons for such situations from nine other aspects:
1. Choosing a temperature that is too high can easily cause severe oxidation on the tin surface of the soldering iron tip.
2. Do not eat tin on the tin coated surface before use.
3. Using incorrect or defective cleaning methods.
4. Interruption of flux in the use of impure solder or wire.
5. When the working temperature exceeds 350 ℃ and welding is stopped for more than 1 hour, the amount of tin on the lead-free soldering iron head is too low.
6. Dry burning "electric soldering iron tip, such as when the soldering table is open and not in use, and the surface of the soldering iron tip is free of tin, can cause rapid oxidation of the soldering iron tip.
7. The flux used is highly corrosive, causing rapid oxidation of the soldering iron tip;
8. Using neutral active flux without regularly cleaning the oxide on the soldering iron head
9. Contact with organic substances such as plastics, lubricants, or other compounds. Usual handling method:
It is to use a small knife to scrape off the oxide layer of the electric soldering iron head, exposing copper that has not been oxidized by air. Then, dip it in a rosin box and dip it in tin, and you can use it normally. However, this method is not thorough in cleaning, and if scraped for a long time, the soldering iron tip will become thinner and affect heat transfer, leading to a decrease in temperature and even damage to the soldering iron tip.
The fast and efficient processing method is:
Holding the wooden handle of the electric soldering iron, immerse the oxidized soldering iron tip into a container containing alcohol. After 1-2 minutes of removal, the oxide is completely and cleanly removed, and the soldering iron tip looks completely new. This is because after heating copper oxide and alcohol, a chemical reaction occurs, which in turn reduces copper and has no corrosive effect on the electric soldering iron head.
