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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.
What are the phenomena that occur when the solder bar is welded?
Sep 14, 2022
09-14
2022
During the welding process of the tin bar, some unexpected situations will occur, resulting in poor welding. What is the reason for the tin bar to appear in these situations?
1. The flux and the bottom surface are in poor contact; the angle between the bottom plate and the liquid surface is improper.
Are tin wires and soldering wires the same, and what are their functions?
Sep 13, 2022
09-13
2022
Solder wire is a very important material in the electronic soldering industry, used for manual soldering of products and automatic soldering with the aid of machines. The tin wire is composed of two parts: tin alloy and flux. The alloy components are divided into tin-lead, tin-copper, etc., and the flux is evenly poured into the middle part of the tin alloy. The common classifications of tin wire are lead-free tin wire and leaded tin wire (also called lead-free solder wire and leaded tin wire); tin wires with different compositions have different melting points and corresponding uses.
Poor analysis of solder joint position bridges when soldering with solder paste
Sep 13, 2022
09-13
2022
There are various reasons for the short circuit between the solder joints of the circuit board formed during the soldering process with solder paste, which can be mainly divided into three categories: one is the reason of the solder paste itself; the other is the reason of the incoming circuit board ; The third is the influence of welding process. Solder paste manufacturers can analyze the reasons for these defects one by one:
How to use eco-friendly tin bars
Sep 09, 2022
09-09
2022
With the increasing awareness of environmental protection, the solder in the electronic manufacturing industry is also required to be environmentally friendly. Therefore, environmentally friendly tin bars have begun to replace traditional leaded tin bars. The price of environmentally friendly tin bars is higher. From the perspective of cost saving, waste environmentally friendly tin bars need to be recycled.
Soldering process related materials and common sense
Sep 09, 2022
09-09
2022
1 Definition of solder: the use of heating tools (electric ferrochrome) to firmly join two or more point metal conductors to achieve the purpose of conducting electricity.
make process.
2 Common sense of solder: There are generally two types of solder commonly used in toy assembly:
A. Tin bar: It is used on the wave crest passing tin machine specially used for electronic pulling, which will not be introduced here.
B. Tin wire:
a Composition: 60% tin, 40% lead, the hollow part of the tin wire contains flux.
b. Features: The melting temperature of the tin wire is above 190 C, and the conductivity is good.
Solder Wire Solder Wire Solder Bar Tin Bar Tin Wire Various Uses
Sep 08, 2022
09-08
2022
The production and maintenance process of electronics, hardware, clocks, toys, accessories and other industries are inseparable from soldering, so lead-free tin bar soldering materials are indispensable in these jobs. The melting point of solder varies with the ratio of tin to lead, and the melting point of tin-lead alloys is lower than that of any other alloy. High-quality solder has a tin-lead ratio of 63% tin and 37% lead. The melting point of this proportion of solder is 183°C. Some poor-quality solders have higher melting points, and the solder joints are rough and slag-like after solidification, which is due to the high lead content in the solder.
Solder paste quality inspection steps
Sep 08, 2022
09-08
2022
1. For solder powder detection, the particle size of tin powder can be measured with a high magnification microscope to check the distribution of tin powder particles. It is relatively high, which proves that the quality of this solder paste solder powder is relatively good, and it will not affect the quality of SMD printing on the stencil.
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