The reason and solution for the oxidation of the soldering iron tip and its failure to absorb tin
When using an electric soldering iron for soldering work, it is common to encounter the problem of the soldering iron tip oxidizing and not eating tin. There are various reasons for the soldering iron tip not eating tin, but as long as we understand and summarize experience, common reasons for the soldering iron tip not eating tin will still be found. In addition, we also need to master the methods for handling soldering iron tips that do not eat tin.
The problem of electric soldering iron tip oxidation not eating tin
1. Reasons for not eating tin due to oxidation of soldering iron tips
In the process of using an electric soldering iron, the most feared problem is the burning of the soldering iron tip. How to deal with this situation? Below are some methods summarized over the years.
To prevent the soldering iron tip from burning to death and not eating tin, it is necessary to first understand the reasons why the soldering iron does not eat tin. The main reason why the soldering iron tip does not eat tin is due to the soldering iron tip burning out for a long time. This is the most common mistake made by friends who are new to electronic soldering technology. They often forget to unplug the power when dealing with other things, causing the soldering iron tip to burn out in the air. During the air burning, the temperature of the soldering iron tip is very high, about 380 degrees Celsius.
There are two situations, depending on whether the soldering iron tip is made of copper metal or iron metal, the consequences are different.
(1) The soldering iron tip is made of copper metal
It will react with the oxygen in the air and generate black copper oxide on the surface. If the solder is melted, there will be a spherical liquid of tin on the surface of the old iron head. If the oxidation is serious, it will not stick to tin at all. This is the so-called "iron head does not eat tin".
(2) The tip of an electric soldering iron is made of iron metal
Due to prolonged exposure to heat, it will turn into black iron oxide, which is also very difficult to consume.
2. The method of treating soldering iron tips without consuming tin
The commonly used soldering iron tips include copper tips and alloy tips, which are mainly composed of five metals: copper, iron, nickel, chromium, and tin.
