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What properties should a flux for solder wire have?
Sep 21, 2022
09-21
2022
Flux is an indispensable material in electronic assembly technology. The quality of flux directly affects the entire production process and product quality of the electronics industry. Therefore, flux plays an important role in the soldering process. So what properties should the flux for solder wire have?
(1) The flux for solder wire should have an appropriate active temperature range. It starts to work before the solder is melted, and plays a better role in removing the oxide film and reducing the surface tension of the liquid solder during the soldering process. The melting point of the flux should be lower than that of the solder, but not too large.
Precautions when soldering solid solder wire
Sep 21, 2022
09-21
2022
When soldering solid core solder wire, it is necessary to add flux, and the selected flux should be composed of rosin and a small amount of active agent. Temperature control is the most important thing when solid welding wire is used for welding. During the welding process, the melting point of the welding should be kept at 50 degrees Celsius. When soldering solid solder wire, the temperature of the soldering iron tip should be accurately controlled. According to the size of the soldered piece, as well as the performance and power of the soldering iron, different types of solder and the linearity of the solder wire can be selected. Should exceed 100 degrees Celsius.
Technical application of solder wire
Sep 20, 2022
09-20
2022
In the entire production process of solder wire, the reason why the extrusion process is designated as a special process is because extrusion is a key link in the entire production process. At that time, many electronic components were electroplated with a layer of chromium on the surface. Metal, metal chromium has a very strong recovery ability, which can strengthen the surface strength and corrosion resistance of electronic components.
The role of solder flux
Sep 19, 2022
09-19
2022
Solder flux is mainly used to wet the base metal during the welding process, if the material being welded is not wet enough. The entire welding cannot be performed. It's like putting grease on a material, and the material cannot be wetted by water. Because the oil on the surface of the material cannot be mixed with water, that is, the wettability is not enough, and the two cannot be combined.
Explain the problems and solutions in the use of tin bars
Sep 19, 2022
09-19
2022
1. Too much tin dross during the use of tin bars?
Answer: This situation is divided into hand dip furnace and wave furnace (wave furnace has semi-automatic and fully automatic wave furnace) to analyze. The analysis has the following points:
What is the role of flux in lead-free tin wire?
Sep 16, 2022
09-16
2022
As we all know, the soldering of lead-free tin wire is more difficult than the soldering of lead-tin wire. When transitioning to a lead-free process, we need to have an in-depth understanding of some of the characteristics of lead-free tin wires in order to achieve good work. Therefore, before working, it is necessary to remove the dirt, metal oxides, other impurities or gas layers attached to the metal surface.
Tin price and tin content of tin wire
Sep 16, 2022
09-16
2022
First of all, let's introduce the little knowledge of the tin content of tin wires: tin wires are divided into lead tin wires and lead-free tin wires according to whether they are environmentally friendly. Among the lead tin wires, the tin wire with the highest tin content is 6337 tin wire. In addition to this 6337 tin wire, it is divided into 6040, 5545, 5050, 4555 and other alloy proportions of tin wire according to its tin content. Why is there no lead-tin wire with a higher proportion than 6337? For example, 7030, 7525, 8020, etc.; in fact, it is like this: 6337 tin wire is the best ratio of lead and tin, and its melting point reaches 183 ℃, which is suitable for the welding of most components and electronic products. The tin wire of 6337 ratio is After rigorous and repeated technical testing and use, it can achieve the best effect of solder wire welding.
What is the role of flux in lead-free tin wire?
Sep 15, 2022
09-15
2022
As we all know, the soldering of lead-free tin wire is more difficult than the soldering of lead-tin wire. When transitioning to a lead-free process, we need to have an in-depth understanding of some of the characteristics of lead-free tin wires in order to achieve good work. Therefore, before working, it is necessary to remove the dirt, metal oxides, other impurities or gas layers attached to the metal surface.
Matters needing attention after the solder paste is opened
Sep 15, 2022
09-15
2022
In the production and manufacturing process of the manufacturer, in principle, it is necessary to avoid contact with the air as much as possible, and the less the area and frequency of contact with the air, the better. The contact of lead-free solder paste with air will cause the internal metal tin powder to be oxidized by oxygen in the air, resulting in the failure of solvents, fluxes and other components, affecting the performance. Not only is it as simple as oxidation, but the actual test results of lead-free solder paste manufacturers also show that too much contact with air will cause the flux to fail, and the solvent in the flux will evaporate into the air too much.
Why should solder paste be "lead-free"
Sep 14, 2022
09-14
2022
Lead-free solder paste is gradually produced with the development of the times, people's awareness of environmental protection is gradually strengthened, and lead-free solder paste has gradually entered lead-free solder paste.As we all know, metal lead is very polluting the environment. When the air, water, soil and other natural resources contain a large amount of metal lead, it will seriously endanger the human body, health and living environment. With the continuous strengthening of environmental protection efforts, metal lead is rarely allowed in electronic products. As a heavy metal, metal lead is a toxic and harmful substance.
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