Tips 𞓜 how to clean PCB boards 2021-10-22

stay PCB In the process of plate production , Cleaning the circuit board is an important step , If the surface of the circuit board cannot be effectively cleaned , Then resistance and leakage will cause circuit board failure , Yes PCB The service life of the board has a great influence . that ,pcb What is the cleanest way to wash the board ？ Xiaobian has sorted out the following ways to clean the circuit board to share with you .

1. Wash with half water

• Mainly using organic solvents and deionized water , Add a certain amount of active agent 、 Cleaning agent composed of additives . This cleaning is between solvent cleaning and water cleaning , These cleaners are organic solvents 、 Flammable solvents 、 High flash point 、 Low toxicity 、 Safe to use 、 But it must be washed with water , Then dry it .

2. Water purification technology 　　　

• Water purification technology is the development direction of clean technology in the future , It is necessary to establish pure water source and discharge water treatment workshop . Use water as cleaning medium , Add surfactant to water 、 auxiliary 、 Corrosion inhibitors and chelators , Form a series of water-based cleaning agents . It can remove water solvents and nonpolar pollutants .

3. Solvent cleaning 　　　

• Used for welding without cleaning flux or cleaning solder paste , After welding, go directly to the next process for cleaning , Solvent cleaning technology is the most commonly used alternative technology , In particular, mobile communication products are basically a one-time use method to replace ODS. Solvent cleaning is mainly used for solvent dissolution to remove pollutants . Solvent cleaning due to its fast volatilization 、 Strong solubility , Simple equipment is required .

　　　　
4. Ultrasonic cleaning

• Ultrasonic cleaning machine uses ultra-high frequency to convert into kinetic energy in liquid medium , Produce cavitation effect , Forming countless tiny bubbles , Then hit the surface of the object , Make the surface dirt fall off , So as to achieve the cleaning effect . Because it is through liquid , As long as the liquid can contact the surface, it can be cleaned in place , No dead ends . Ultrasonic cleaning can work on every surface of multiple objects at the same time . This is very effective and fast , Can be cleaned about 15 minute . The advantage of ultrasonic cleaning is that it can effectively reduce , Improve the capability of pads and components , And reduce electromagnetic interference .

The above is “pcb What is the cleanest way to wash the circuit board ” Several methods of cleaning , I hope it helped you .

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