Spray cleaning is the process of spraying cleaning solution onto the surface of a printed circuit board (PCB) through a nozzle, using spray force to remove dirt. This method is suitable for large-scale cleaning and has high cleaning efficiency. When spray cleaning, it is necessary to choose the appropriate cleaning solution and nozzle type to ensure the cleaning effect. At the same time, it is also necessary to control the temperature and spray pressure of the cleaning solution to avoid damage to the PCB board.

3、 Brushing and cleaning

Brushing and cleaning is the process of using a soft bristled brush or brush to apply cleaning solution to the surface of the PCB board, and then gently scrubbing it with a brush. This method is suitable for cleaning small batches or PCB boards with a lot of local dirt. When brushing and cleaning, it is necessary to choose a suitable brush and cleaning solution to avoid scratching or corroding the PCB board. At the same time, the brushing force also needs to be moderate to ensure the cleaning effect without damaging the PCB board.

4、 No cleaning process

Non cleaning process is a method of avoiding traditional cleaning processes by improving the quality control and process control of raw materials such as printed circuit boards and electronic components. This method has the characteristics of low transformation cost, low production and operation cost, and environmental friendliness. However, it should be noted that the no cleaning process has high requirements for raw materials and process control, and it is necessary to ensure that the quality of raw materials such as printed circuit boards and electronic components meets relevant standards. At the same time, process control also needs to be strictly controlled.

5、 Other cleaning methods

In addition to the common cleaning methods mentioned above, there are also other cleaning methods such as soaking in organic solvents and using chemical cleaning agents. These methods each have their own advantages and disadvantages, and it is necessary to choose the appropriate cleaning method based on the actual situation. For example, soaking in organic solvents can dissolve dirt, but attention should be paid to the volatility and toxicity of the solvents; Using chemical cleaning agents can remove stubborn dirt, but attention should be paid to the corrosiveness and residual issues of the cleaning agents on the PCB board.

Precautions for Cleaning PCB Printed Circuit Boards

Choose the appropriate cleaning solution: Different cleaning needs require the selection of different types of cleaning solutions. Common cleaning solutions include deionized water, alcohol, industrial cleaning agents, etc. The selection needs to be based on factors such as the type of dirt and the material of the PCB board.

Control cleaning time and temperature: Cleaning time and temperature are key factors affecting cleaning effectiveness. Excessive cleaning time or high temperature may damage the components on the PCB board or cause deformation of the board surface. Therefore, it is necessary to control the cleaning time and temperature reasonably according to the characteristics of the cleaning solution and the requirements of the PCB board.

Appropriate drying process: The cleaned PCB printed circuit board needs to be dried to avoid problems such as corrosion or short circuit caused by residual moisture. You can use tools such as air guns, drying ovens, or fans for drying treatment, and ensure that the PCB board is completely dry before proceeding to the next step.

Anti static measures: During the cleaning process, attention should be paid to preventing the generation and accumulation of static electricity to avoid damage to the PCB board. Tools and equipment such as anti-static brushes and anti-static clothing can be used to reduce the generation and accumulation of static electricity.