How to recognise the quality of solder wire

Solder wire, as the name suggests, is a tin wire used for soldering, and it is known in the literal sense that its composition must contain tin. Usually, the metal composition of tin wire is tin, lead, silver, copper, bismuth, antimony and other metal elements. At present, the use of tin-silver-copper, tin-copper, tin-lead solder wire is the most common. Some people may ask, how to distinguish the quality of solder wire with the naked eye? Today, Nofil Kabel prajurit manufacturers will summarize and analyze for you:

To distinguish the quality of solder wire, it can be roughly divided into two categories: direct identification and indirect identification. The so-called direct discrimination mainly refers to observing and distinguishing from the aspects that we can see with the naked eye:

Solder wire 1. Look: that is, visual inspection. High-quality tin wire should have a smooth surface, uniform winding and glossy, and there should be no oxidation and blackening. In general, good quality solder wire has these characteristics. 2. Touch: Touch with your hands, or rub the solder wire with the help of white paper. For lead-containing solder wires, good quality solder wires are white and shiny, and it is not easy to get on your hands when wiped by hand, while tinned wires with high lead content will be black, and it is easy to leave black marks on your hands when wiped by hand. Reactive solder wire 3. Soldering: This distinguishing method is applied in actual soldering operations to distinguish the quality of solder wire. Before soldering, the temperature of the soldering iron should be adjusted correctly, due to the different ratio of tin-lead, the corresponding melting point of the lead solder wire is also different, and it can only be accurately detected by adjusting to the appropriate temperature. The ratio of common solder wire to melting point is as follows: 6337 solder wire, melting point 183 degrees; 6040 solder wire, melting point 190 degrees; 5545 solderwire, melting point 205 degrees; 5050 solder wire, melting point 215 degrees; 4555 solder wire, melting point 226 degrees, and so on. If the soldering iron cannot be enamed, on the one hand, it may be that the soldering iron tip is too dirty or the quality of the soldering iron tip is not good, you can use a file to file the contact surface of the soldering iron tip or replace a good quality copper soldering iron tip; On the other hand, it may be that the quality of the solder wire is not good.

Solder wire soldering In the soldering process, it can also be judged according to the size of solder smoke, less smoke means high purity of tin; After welding, it can be identified according to the gloss of the solder joint, if the solder joint is dark, it indicates that the lead content of the solder wire is large, and the quality of the solder wire is poor; It can also be judged according to the amount of solder residue, which means that the purity of the tin wire is not high, and the quality of the solder wire is not good.

Solder wire manufacturers Indirect identification mainly refers to when the quality of solder wire cannot be judged by the naked eye and operating experience, we must distinguish and judge from a professional and technical point of view. The general solder wire manufacturers will have strict quality control in the production process, the composition ratio of the solder wire is tested by professional measuring instruments, and the quality of the solder wire can be tested by the spectrum tester, which is the most accurate. Here double Chile solder wire manufacturers want to explain that the quality of solder wire depends on the various raw materials and production processes of solder wire production. When choosing solder wire, it is best to consult and customize with regular manufacturers to choose the solder wire suitable for product soldering.

The main function of solder wire is to be used for soldering, generally used for welding electronic components, power supplies, small hardware, etc., such as the welding of capacitors, ICs, resistors and other components on the circuit board, and its application field and scope are very wide. Shuangchile solder manufacturers provide Kabel prajurit, lead-free tin wire, leaded solder wire, rosin solder wire and solder wire wholesale of different specifications, lead-free solder paste, lead-free solder bar production and other services. For more knowledge and questions about soldering, you can pay attention to Shuangchile solder manufacturers and leave a message online to interact with us.

In actual production and life, it is of great significance to correctly distinguish the quality of solder wire. The "look" in the direct discrimination method allows users to quickly and preliminarily screen out the solder wire with good appearance through vision, and the tin wire with uniform winding and gloss is often of better quality. The "touching" method is more effective in judging the quality of lead-containing solder wires, and can distinguish the lead content by whether there are black marks on the hands. The "soldering" method is more complex and comprehensive, and it is necessary to comprehensively judge the quality of solder wire in the actual soldering operation according to the correct adjustment of the temperature of the soldering iron, the size of the smoke during soldering, the gloss of the solder joint, and the amount of solder dross residue. For example, less smoke indicates high purity of tin, solder joints implicitly indicate high lead content and poor quality, and more solder dross indicates low purity and poor quality of tin wire.

The indirect discrimination method emphasizes the need to use professional technical means when the naked eye and operational experience cannot accurately judge. Because the production of solder wire involves a variety of raw materials and complex processes, and its quality is determined by a variety of factors, regularKabel prajuritmanufacturers will use professional instruments such as spectral testers to strictly control the quality. This also reminds users that when choosing solder wire, they should go to regular manufacturers for consultation and customization to ensure that they can choose the solder wire that is suitable for the welding needs of the product. Solder wire is widely used in the welding of electronic components, power supplies, small hardware, etc., such as the welding of capacitors, ICs, resistors and other components on the circuit board. Nofil solder manufacturers provide a variety of types and specifications of solder wire products and related production services, providing users with more ways to obtain knowledge of soldering, and users can also interact with manufacturers through online messages if they have any questions.