Tin selection technology is a very important technology widely used in the electronic manufacturing industry. It refers to applying the correct amount of tin and appropriate tin temperature to the welding process of electronic components through a series of steps. The correct application of tin selection technology can ensure the reliability and stability of electronic components, thereby improving the quality and performance of the entire electronic product. This article will provide a detailed introduction to the operating steps and precautions of tin selection technology.
1、 Operation steps of tin selection technology
1. Preparation work
Before conducting tin selection technology, some preparatory work needs to be done. Firstly, prepare welding equipment and tools, including a welding table, solder wire, solder pen, etc. Secondly, it is necessary to prepare welding materials, including solder wires, through-holes, and surface mount components. Finally, it is necessary to clean and anti-static the welding environment to ensure that there is no external interference during the welding process.
2. Determination of tin selection amount
Tin selection quantity is a very important part of tin selection technology. The amount of tin selected directly affects the welding quality and the reliability of components. Excessive selection of tin can easily lead to excessive solder joints, while insufficient selection of tin can lead to insufficient firmness of solder joints. Generally speaking, the amount of tin selected should be determined based on the size and shape of the soldered components. For small surface mount components, the selection amount of tin is generally around 0.02g; For large components or components that require large-scale welding, the amount of tin selected can be appropriately increased.
3. Tin temperature control
When conducting tin selection technology, the control of tin temperature is also very important. Excessive tin temperature can easily lead to excessive solder joints, which may burn out components during the welding process; If the tin temperature is too low, it will cause the solder joints to be not firm enough. Generally speaking, when soldering surface mount components, the tin temperature should be controlled at around 240 ℃; When welding through hole components, the tin temperature should be controlled at around 260 ℃.
4. Welding operation
When conducting tin selection technology, the following points need to be noted:
(1) Before welding, heat the solder wire to the melting point, and then apply the solder wire to the solder joint.
(2) When welding, the solder pen should be kept at a certain distance from the solder joint to avoid burning out the components.
(3) After welding, check whether the welding points are firm and whether there are any welding defects.
2、 Precautions for Tin Selection Technology
1. Pay attention to anti-static measures
When conducting tin selection technology, it is necessary to pay attention to anti-static measures. Static electricity can cause damage to electronic components, leading to component failure. Therefore, before welding, the welding environment should be cleaned and treated with anti-static measures, and anti-static equipment and tools should be used during welding.
2. Pay attention to the control of tin selection quantity and tin temperature
The control of tin selection quantity and tin temperature is a very important part of tin selection technology. Excessive selection of tin or excessively high tin temperature can lead to excessive solder joints, while too few solder joints or excessively low tin temperature can lead to insufficient firmness of solder joints. Therefore, when conducting tin selection technology, the amount of tin selection should be determined based on the size and shape of the components, and the tin temperature should be well controlled.
3. Pay attention to welding operations
When performing tin selection technology, it is necessary to pay attention to welding operations. Before welding, heat the solder wire to the melting point, and then apply the solder wire to the solder joint; When welding, the solder pen should be kept at a certain distance from the solder joint to avoid burning out the components; After welding, check whether the welding points are firm and whether there are any welding defects.
Summary:
The 
tin selection technology is a very important technology that is widely used in the electronic manufacturing industry. The correct application of tin selection technology can ensure the reliability and stability of electronic components, thereby improving the quality and performance of the entire electronic product. When conducting tin selection technology, it is necessary to pay attention to anti-static measures, control the amount and temperature of tin selection, and strictly follow the welding operation requirements.
