1. Moisture-proof storage of components: components placed in the air for too long will cause components to absorb moisture and oxidize, resulting in components that cannot fully remove oxides during the welding process, resulting in false welding and false welding defects. Therefore, an oven is generally equipped in a PCBA processing plant, and components with moisture can be baked during the soldering process to replace oxidized components.

2. Choose solder paste of well-known brands: The defects of virtual soldering and false soldering in the PCBA soldering process have a great relationship with the quality of solder paste.

3. Adjust the printing parameters: The problem of virtual welding and false welding is mostly due to the lack of tin. During the printing process, the pressure of the scraper should be adjusted, and the appropriate steel mesh should be selected. The steel mesh opening should not be too small to avoid too little tin. Happening.

4. Adjust the reflow soldering temperature curve: During the reflow soldering process, the soldering time should be well controlled. If the time in the preheating zone is not enough, the flux cannot be fully activated, and the surface oxides at the soldering place cannot be removed. Long or too short will cause false welding and false welding.

5. Try to use reflow soldering to reduce manual soldering: Generally, when using an electric soldering iron for manual soldering, the technical requirements for the soldering personnel are relatively high, the temperature of the soldering iron tip is too high or too low, or the soldered components are loose during soldering. It is easy to cause false soldering and false soldering. The use of reflow soldering can reduce human external factors and improve the quality of soldering. 

6. Avoid high or low temperature of the soldering iron: When soldering, keep the tip of the soldering iron clean, choose soldering irons of different power types according to the size and shape of different parts and solder joints, and control the soldering temperature at 300 Between ℃ and 360℃.

7. Select the appropriate testing equipment: After many experiments and research, X-ray testing equipment has been recognized by more and more people, and the efficiency and effect of its circuit board virtual welding detection are both worry-free and labor-saving. When the X-ray inspection equipment can detect the difference of the ray intensity of the penetrating object to detect the parts of the circuit board that are soldered, the circuit board is hollow, and the circuit board is broken, the high efficiency of its detection makes the business owner applaud.