sales@ipcb.com
PCB ultrasonic cleaner is a kind of equipment used for cleaning PCB and PCBA, the equipment uses non-flammable organic solvents to achieve the purpose of cleaning, in addition to being used to clean PCB and PCBA board can also be used for semiconductors, crystals, resistors, capacitors, computer motherboards, picture tubes, electro-vacuum devices, and other electronic devices production and processing process of the process of cleaning. PCB ultrasonic cleaning machine's role includes rapid cleaning, thorough cleaning, uniform cleaning, non-destructive cleaning, and ease of operation.
Fast cleaning: PCB ultrasonic cleaner can quickly clean PCB circuit boards, improve cleaning efficiency, and save time and labor costs.
- Thorough cleaning: ultrasonic can produce high-frequency oscillation,so that the cleaning fluid on the surface of the PCB circuit board forms tiny bubbles, can achieve a microscopic cleaning effect, and completely removes the difficult stains and impurities.
Cleaning uniformity: The ultrasonic cleaning machine can evenly distribute the cleaning fluid to ensure that the entire surface of the PCB circuit board is fully cleaned and to avoid problems caused by uneven cleaning.
- Non-destructive cleaning: The ultrasonic cleaning machine will not cause mechanical damage to the PCB circuit board, to avoid scratches and damage that may be caused by traditional cleaning methods.
- Simple operation: The ultrasonic cleaning machine operation is simple and convenient, just put the PCB circuit board into the cleaning tank, select the appropriate cleaning mode and time, and you can complete the cleaning process, reducing the operating difficulties and personnel training costs.
Its working principle is to convert electrical energy into mechanical vibration to generate high-pressure bubbles, the use of bubbles to break the force of the cleaning agent particles' impact on the circuit board. In the cleaning of circuit boards should pay attention to the correct choice of ultrasonic power, do not adjust the ultrasonic power in the cleaning process if is too large, its power and the volume of containers, cleaning the amount of circuit boards is generally proportional to the choice of how much ultrasonic cleaning circuit boards according to the amount of the boards depending on the general only suitable for large quantities of circuit boards, the solvents used to clean the circuit boards can generally be used in cleaning the circuit boards to pay attention to not messy stacking, set up in an orderly manner When cleaning circuit boards, pay attention not to haphazardly stacked, orderly set up in the tank, haphazardly stacked to affect the cleaning effect.
- Power selection. The ultrasonic cleaning effect is not necessarily proportional to (power x cleaning time), sometimes with small power, spend a long time did not remove the dirt. If the power reaches a certain value, sometimes very quickly remove the dirt. If the choice of power is too large, cavitation intensity will increase greatly, and the cleaning effect is improved, but then the more precise parts also produce etching, and cleaning the cylinder bottom vibration plate at the cavitation is serious, in the use of water or water-soluble cleaning fluid, easy to be corroded by the water point, so according to the actual use of the choice of ultrasonic power.
- Frequency selection. Ultrasonic cleaning frequency in the dozen kH to 100kHz between the use of water or water cleaning agent, caused by the role of cavitation physical cleaning force low frequency when the best results, generally use 15 ~ 30kHz frequency is high ultrasonic directionality is strong, suitable for fine objects cleaning, small gaps, slits, deep holes in the cleaning of the parts, generally more than 40kHz, or even a few hundred kHz ultrasonic waves. If the broadband frequency modulation is cleaned, the effect is better.
- Selection of cleaning fluid temperature. The water cleaning fluid is the most suitable cleaning temperature of 40 ~ 60 ℃, low-temperature cleaning fluid cavitation effect is, the cleaning effect is poor. Therefore, the cleaning machine generally with cleaning fluid heating device, in the cleaning cylinder outside the winding on the electric heating wire for temperature control, to improve the cleaning effect.
- The amount of cleaning fluid and the location of cleaning parts. A general cleaning fluid level above the vibrator surface of 100mm or more is good. Due to the single-frequency cleaning machine by the influence of the standing wave field, the amplitude at the wave section is very small, and the amplitude at the amplitude of the wave is large resulting in uneven cleaning. Therefore, the best position for cleaning items should be placed at the wave amplitude.
Batch PCBA washing process: according to the controlled production time cycle of multiple parts or a part of a different batch grouped for cleaning. In the batch PCBA washing process, PCB ultrasonic cleaner is the most common cleaning method.