Introduction to non-stick solder wire of electric soldering iron
Electric soldering iron is an essential tool for every electronic DIY enthusiast and home appliance repairman. The most common problem during use is that the soldering iron tip does not eat tin. Many people are unaware of the reason why it doesn't eat tin and don't know how to fix it.
Introduction and working principle of electric soldering iron
Electric soldering irons are mainly composed of a handle, power cord, heating element, soldering iron tip, and mica sheet (some precision ones also have various temperature control circuits). According to their heating methods, they can be divided into two categories: internal heating electric soldering irons and external heating electric soldering irons, which correspond to different usage scenarios. The reason why it is called an internal heating soldering iron is because the tip of the internal heating soldering iron is hollow, and its heating core is located in the hollow inside of the tip, so it is called an internal heating soldering iron.
Internal heating electric soldering iron tip, with a hollow structure at the end
The tip of an externally heated soldering iron is exactly opposite to that of an internally heated soldering iron. The tip of an externally heated soldering iron is solid and usually made of copper material. The heating core of an external heating electric soldering iron directly wraps around the soldering iron tip, meaning that the soldering iron tip is inserted inside the heating core, hence it is also called an external heating electric soldering iron.
External heating electric soldering iron tip, solid structure
Whether it is an internally heated soldering iron or an externally heated soldering iron, their working principles are the same. The power plug of the electric soldering iron introduces household AC220V AC power into both ends of the heating element, and the heating element is energized to generate heat.
Why doesn't an electric soldering iron stick to solder
1. The electric soldering iron has been used for a long time, and the internal heating element has aged or been damaged, causing the heat to not reach the melting point of the solder, resulting in the soldering iron tip not sticking to the solder.
2. During daily use, if the soldering iron tip is not tinned after use, it may oxidize with air at high temperatures.
