1. Operate at the Lowest Effective Temperature
Whenever possible, solder at the lowest temperature that still ensures reliable performance. Excessive heat accelerates oxidation of the soldering iron tip and significantly reduces its service life. For example, when the tip temperature exceeds 470 °C, the oxidation rate is approximately twice that observed at 380 °C.
2. Avoid Applying Excessive Pressure
Do not exert excessive force during soldering, as this may damage or deform the tip. Proper heat transfer is achieved through correct contact between the tip and the solder joint, rather than applied pressure. Selecting an appropriate tip geometry for the application can further improve thermal efficiency.
3. Maintain Proper Tip Tinning
Always keep a thin, even layer of solder on the tip to minimize oxidation and extend its lifespan. After completing soldering operations, slightly reduce the temperature and apply fresh solder to form a protective tinned layer with enhanced anti-oxidation properties.
4. Clean the Tip Regularly and Remove Oxidation Promptly
If black oxidation appears on the tip, solder adhesion will deteriorate and immediate cleaning is required. Lower the temperature to approximately 250 °C, clean the tip using a damp sponge or brass cleaner, and then re-tin the surface. Repeat this process until all oxidation is completely removed.
5. Use Low-Activity Flux
Highly active or corrosive fluxes can accelerate tip corrosion when exposed to heat. To protect the soldering iron tip and prolong its service life, use flux formulations with low corrosiveness whenever possible.