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What are the methods of PCB SMT assembly patch processing, maintenance and cleaning?

Editor:topscomTime:2021-09-02Views:

PCB SMT assembly patch processing and maintenance is to clean the surface of the equipment every day, check whether the part of the equipment is in good contact and whether the ground wire is in good contact. If it is damaged, it shall be replaced and repaired in time. The cleaning method is to make deionized water by using electrodialysis device and ion exchange resin tank. Now let's introduce the processing, maintenance and cleaning methods of PCB SMT assembly patches?
 
1、 PCB SMT assembly patch processing and maintenance
 
1. Clean the surface of the equipment every day. The equipment must be preheated automatically for at least 20 minutes after starting up every day. Check whether the movable parts are in good contact and whether the screws are loose; Clean the surface of each sensor.
 
2. During weekly maintenance, add lubricating oil to the moving part, check whether each suction nozzle is blocked and add liquid oil, and detect and clean the laser head and camera lens.
 
3. Monthly maintenance: clean the machine head, replace the lubricating oil for the movable shaft, clean the stains on the movable part, replace the lubricating oil for the X and Y axes, and check whether the grounding wires are in good contact.
 
4. Annual maintenance: check whether the power supply of the electric box is in good contact, check the wear of various components of the equipment, and replace and repair them.
 
2、 PCB SMT assembly patch processing and cleaning method
 
1. Preparation of deionized water
 
Deionized water is prepared by electrodialysis device and ion exchange resin tank.
 
2. Conductivity test
 
The conductivity tester is used to test the conductivity of water after electrodialysis and ion exchange resin tank. If they all meet the index requirements, they can be used for water cleaning.
 
3. Lead in water washer
 
The deionized water in the water storage tank is introduced into the water washer.
 
4. Set washer parameters
 
The flushing chamber and rinsing chamber are set at 60 ± 10 ℃; The drying chamber is set at 60 ℃ - 90 ℃.
 
5. Set chain speed
 
Generally, the chain speed is controlled at 50-150cm / min.
 
6. After PCBA cleaning, take it out of the cleaning machine and store it in the anti-static turnover container. The anti-static turnover container is required to be clean and dust-free to avoid secondary pollution of PCB assembly after cleaning.
 
The above is a detailed introduction to the processing, maintenance and cleaning methods of PCB SMT assembly patches. If you have other problems, please continue to pay attention!

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