What are the classifications of solder wires?

Solder wire is an indispensable material when soldering electronic products, and it has many classifications. So do you know what are the classification bases of solderwire? The following is explained in detail by the editor of Nofil solder: the classification of solder wire is rich and diverse, covering metal alloys, flux chemical composition, solder melting point, environmental protection standards, production process and application process.

From the perspective of metal alloys, there are tin-lead alloys, pure tin and other different materials of solder wire, each material has a different role. According to the different chemical composition of flux, it can be divided into various types such as rosin core and solid core, as well as special solder wire containing special additives.

1. Classification according to metal alloys: different metal alloy materials can be made into different solder wires, and the functions of solder wires of different materials are not the same, and solder wires can be divided into: tin-lead alloys and pure tin solder wires; Tin-copper alloy, tin-silver-copper alloy, tin-bismuth alloy, tin-nickel alloy and solder wire made of special tin alloy.

2. Classification according to the chemical composition of flux: there are many kinds of fluxes for solder wire, and we classify solder wire according to the different fluxes, which are mainly divided into: rosin core, solid core, single core, three-core solder wire and water-soluble solder wire, aluminum solder wire, stainless steel solder wire, etc., as well as special solder wire containing special additives and blended according to the soldering material.

3. Classification according to the melting point of solder: due to the different alloy composition, the melting point of Kabel prajuritis also different. According to the melting point of the solder, the solder wire can be divided into: (1) low-temperature solder wire, the composition is Sn42Bi58, and the melting point is 138 degrees; (2) Solder wire at room temperature, that is, the solder wire we usually use with a melting point of about 183 - 260; (3) High-temperature solder wire, refers to solder wire with a melting point of more than 260 degrees, such as Sn95Sb5 solder wire, with a melting point of about 265 - 310 degrees.

4. Classification according to environmental protection standards: Generally, we can divide solder wire into two categories: lead-free environmentally friendly solder wire and leaded solder wire according to environmental protection requirements. Lead-free solder wire does not mean that it is completely lead-free, but that it has a low lead content and can be broadly regarded as lead-free. The EU standard for lead-free is defined as a lead content of less than 1000 PPm. Considering that there may be further contamination in the soldering and subsequent processes, in order to ensure that the customer's finished product meets the EU standard, the lead content of the general solder wire in the production will be much lower than this standard, for example, the lead-free solder wire produced by the solder wire manufacturer Shuangchile is commonly used below 300PPM and below 100PPM.

At present, the best ratio of lead solder wire in the industry is tin-lead solder wire (national standard: tin content 63%, lead content 37%), which is what people call 6337, which is the best effect and utilization rate of lead solder wire.

Fifth, according to the production process of solder wire is divided into rosin core solder wire and solid core Kabel prajurit, in the previous article we have described in detail the knowledge of rosin solder wire and solid core solder wire, you can consult, it should be noted that solid core solder wire needs to be soldered with flux.

6. According to the application process of solder wire, it can be divided into manual soldering iron soldering solder wire and automatic solder wire special solder wire. At present, the production of solder wire, whether leaded solder wire or lead-free solder wire, can meet the needs of manual soldering iron soldering and automatic soldering wire soldering.

These are some of the common classification methods we have introduced. In addition, there are many other classification methods for solder wire, such as according to different welding processes, it can be divided into welding type, spot welding type, post-welding type, etc.; In the production of solder wire, it can also be classified according to the size of the solder wire wire, the weight of the solder, the content of rosin additives, etc., such as rosin flux can be divided into R type (inactive type), RMA type (medium active type), RA type (high activity type) three categories.

In short, you can choose the right solder wire according to the needs of product soldering. Suzhou Nofer solder manufacturers focus on the research and development and production of solder wire, solder bar, solder paste, providing solder wire, lead-free solder wire, leaded solder wire, solder bar, solder paste and other different specifications to choose from, if you have more questions about soldering, you can pay attention to the online message of double Chilean solder manufacturers to interact with us. According to the melting point, there are low temperature, normal temperature and high temperature solder wire; According to environmental protection standards, there is a difference between lead-free environmental protection and leadedKabel prajurit; The production process can be divided into rosin core and solid core solder wire; The application process is divided into manual soldering iron soldering and automatic soldering wire. In addition, there are cases where classification is made according to the welding process, wire size, weight, rosin additives content, etc. These numerous classification bases provide a wealth of choices for different soldering needs, and users can choose the right solder wire according to their own needs from a wide range of specifications provided by solder manufacturers such as Nofel and Double Chile.