How to Choose Solder Wire Look at the Appearance: Visually inspect the solder wire. Good solder wire should be smooth, glossy, and free from oxidation or discoloration. (High-quality solder wire is usually protected by a thin layer to prevent oxidation.) Generally, solder wire with a bright co

Cleaning the welding nozzle and adjusting the welding temperature: The welding nozzle is the most critical component in welding. If the welding nozzle is blocked or dirty, it will cause the solder wire to not flow easily or the welding to be unstable during welding. The solution is to remove the wel···

Lead free and environmentally friendly formulas such as Sn99.3Cu0.7 are required, and silver containing solder wires (SnAgCu alloy) are recommended for some high-precision scenarios. The tin content should be moderate to reduce solder head oxidation and ensure melt flowability.