What is the reason for the blackening of solder tin wire solder joints?

What is the reason for the blackening of solder tin wire solder joints?

As one of our main products, solder tin wire is widely popular in the field of electronic packaging due to its high precision, high reliability, and excellent soldering performance. Dongguan Xingwei Solder Wire is committed to providing customers with the highest quality soldering solutions. All soldering products such as solder wires and bars are designed and manufactured with precision, enabling fast and accurate soldering operations, significantly improving production efficiency, and making solder joints full and bright after soldering operations.

However, many companies have this question when looking for new tin wire suppliers: why do the solder joints turn black and not shiny after using lead-free tin wire. With this question in mind, Xingwei will take you to explore it.

There are various reasons for the blackening and lack of brightness of solder dots after soldering, mainly reflected in the following aspects:

1. Insufficient soldering temperature: If the soldering temperature of tin copper and tin wire does not reach the appropriate level, it may cause the solder wire to flow slowly during the heating process, and the tin will stick to the soldering iron tip and form a cluster like oxidized black color.

2. Too strong formula activity: Using activated tin wire with too strong formula activity may also cause blackening after welding. Trying to use drug core tin wire with weaker formula activity or higher rosin content may help improve the situation.

3. Failure to clean the soldering iron tip in a timely manner, especially leaving residue on the surface of the board after soldering operations, resulting in unclean solder joints and easy oxidation and blackening.

The methods to solve these problems include adjusting the welding temperature, replacing the formula or tin wire with appropriate rosin content, and ensuring that the tin powder used is fresh. In addition, using unwashed solder wire or adjusting the temperature of the soldering iron to an appropriate level can also help improve the appearance after soldering.

#Solder wire # Tin wire # Lead free tin wire # Low temperature tin wire # Medium temperature tin wire # Environmentally friendly solder wire

#Tin wire # Lead free environmentally friendly tin wire # Solid core tin wire # Tin wire tin wire manufacturer