Performance comparison between lead solder wire and lead-free solder wire
The luster color is also directly related to the quality grade and tin content of the solder wire. Gloss color not only affects appearance but also affects welding quality. If the luster color is bright and dazzling, its tin content must be high, and the welding effect must be good, otherwise the welding effect will be poor, and even a dull or whitish color will appear, which is not a normal shiny color.
Tin content is the most important part and the only criterion for judging the grade of solder wire. It is also related to important factors such as welding effect, firmness, reliability, and conductivity. When using leaded solder wire, we must use solder wire with a tin content that meets the product requirements, otherwise the soldering quality will have problems to varying degrees. The amount of tin content can't be distinguished by eyes, it can only be known by testing. There are also many kinds of detection methods, such as: spectroscopic detector, gravimetric method, chemical titration method, etc. Electronic factories usually do not have these testing equipment, leaving a large gap. Our company provides testing services for electronic manufacturers free of charge.
The flux component in the lead solder wire burns during soldering, leaving residue and smoke at the same time. When the smoke is thicker, there may be more residue. Residue will affect the appearance of solder joints and often requires cleaning to resolve. The smoke will affect the physical and mental health of operating workers. Therefore, when choosing lead solder wire, it is hoped to choose solder wire with low residue and smoke concentration.
In the production of solder wire, the content of small flux is appropriately adjusted to reduce the moisture inside, but the premise of this method is that after making the amount of flux small, it can still have good solderability, firmness, etc. The effect is the premise, because the quality of the solder wire is ultimately reflected in the welding effect. The lower the moisture content in the purchased rosin raw materials, the better, and it is best that each batch of rosin raw materials has no moisture content. For the storage of rosin and the intrusion of moisture as little as possible in the flux production and synthesis process.
Although the appearance of the solder wire cannot explain exactly what the problem is, it still needs to be mentioned. The products produced by a formal, powerful and branded manufacturer must have relevant appearance packaging standards and detailed labeling instructions for this solder wire. Otherwise, how can customers distinguish and use it? Another thing worth mentioning is the weight of each roll. Different weights have different prices. Today's solder wire has a variety of packaging weights.
