How to judge the quality of lead-tin wire when purchasing?

Everyone should knowSolder wireIt is an essential soldering material in industry. Many circuit board repairs or other electronic components require the use of auxiliary materials. Since this is a necessary material in production, when many manufacturers purchase this type of tin wire, they all pay great attention to the quality and performance of the product. Only in this way can unnecessary product problems, such as poor soldering, and other factors be reduced in industry. So how should we make a judgment? JJY solder Paste Manufacturer will explain it to you:

How to choose solder wire and how to determine whether the solder wire is good or bad? It depends on the characteristics of the solder wire. The first is the solderability of the solder wire. The process of leaded solder wire is very mature. The performance of solder wire produced by various solder factories is basically the same, so there is no need to worry too much about quality issues. It is lead-free solder wire that has been widely used in recent years. Therefore, the quality of lead-free solder wire produced by different solder factories varies, and it is necessary to choose carefully.

Choosing a good solder wire is to hope for a good soldering effect of the solder wire. Therefore, the reliability of the solder joint after soldering is also one of the selection criteria. It is necessary to select the corresponding product that can meet the usage requirements based on the product's usage characteristics. Just like some lead-free solder wires, the reliability of the solder joints after soldering is very poor at high temperatures, but generally at a certain temperature200℃The reliability is relatively good. In fact, many electronic products that need to be reworked have to endure it200℃The above high temperatures. Only by choosing the appropriate solder wire can electronic products achieve good results.

Selection of solder wire diameter. The diameter of the solder wire should be determined based on the size of the components and the soldering process. In a word, suitability is the best. The melting point of solder wire is also related to the soldering technology. When choosing what kind of soldering technology, the corresponding soldering materials need to be used in conjunction.

How to distinguish:

1Tin content

The tin content is the sole criterion for judging the grade of solder wire. It is an important factor related to indicators such as welding effect, firmness, reliability and electrical conductivity. When choosing solder wire, leaded solder wire should be used in accordance with the requirements of the relevant products, which can ensure the quality of the soldering. However, the tin content needs to be determined through detection, such as using a spectrometer or chemical titration method, etc.

2Packaging appearance and weight

Although the appearance of the packaging cannot accurately reflect the quality of the solder wire, generally, regular manufacturers will provide standard descriptions of the solder wire when producing it, explaining the relevant specifications of the solder wire, so that buyers can distinguish and use it. Meanwhile, the weight of the solder wire varies, and so does the price.

3Luster color

The luster color is directly related to the quality of the solder wire and the amount of tin it contains. The brighter the luster, the higher the tin content and the better the welding effect.

4Residue and smoke concentration

When solder wire is used, residues and smoke phenomena will be left. The less smoke there is, the less residue there will be. The welding effect of the weld points will also be better. Moreover, the smoke produced by lead-containing solder wire can affect the health of the operators. Therefore, when purchasing lead-containing solder wire, one should choose the one with less smoke residue.

The above is an explanation of some purchasing precautions and product identification for everyone. If you are not clear, you can take a look. If there is anything you don't understand, welcome to continue to follow JJY Solder Paste Factory and leave a message online to interact with us!