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.

Lead free environmentally friendly materials: Priority should be given to choosing tin copper (Sn Cu) or tin silver copper (Sn Ag Cu) alloys that comply with RoHS standards, which are suitable for the environmental requirements of electronic products.