UCREATE shares with you the tips for cleaning PCB circuit boards
Contaminants are generated during the printed circuit board manufacturing process, including contaminants such as dust and debris from the manufacturing process such as residues of flux and adhesives. If the pcb board cannot effectively guarantee the clean surface, the resistance and leakage will cause the pcb board to fail, thus affecting the service life of the product. Therefore, cleaning the pcb circuit board during the manufacturing process is an important step.
Semi-aqueous cleaning mainly uses organic solvent and deionized water, plus a certain amount of active agent and a 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, and safe to use, but must be rinsed with water and then air-dried.
Water purification technology to clean PCB circuit boards
Water purification technology is the development direction of future clean technology, and it is necessary to establish pure water source and discharge water treatment workshop. Using water as the cleaning medium, adding surfactants, additives, corrosion inhibitors and chelating agents to water to form a series of water-based cleaning agents. Aqueous solvents and non-polar contaminants can be removed.
No-clean flux or no-clean solder paste to clean PCB circuit boards
It is used in the soldering process without cleaning flux or solder paste. After soldering, it goes directly to the next process for cleaning, no longer free cleaning technology is currently the most commonly used alternative technology, especially mobile communication products are basically one-time use method to replace ODS. Solvent cleaning is mainly used for solvent dissolution to remove contaminants. Solvent cleaning requires simple equipment due to its fast volatilization and strong solubility.
The above four cleaning techniques can achieve a certain cleaning effect, but how to clean the
PCB board quickly and effectively? The application of ultrasonic cleaner can be solved. It uses the ultra-high frequency to convert into kinetic energy in the liquid medium, produces a cavitation effect, forms countless tiny bubbles, and then hits the surface of the object to make the surface dirt fall off, so as to achieve the effect of cleaning. Because it is through the liquid, as long as the liquid can touch the surface of the surface, it can be cleaned in place, leaving no dead spots.
Ultrasonic cleaners can work on every surface of multiple objects at the same time. It is very effective and fast and can be cleaned in about 15 minutes. One advantage of using ultrasonic cleaning is that it can effectively restore, improve pad and component capabilities, and reduce electromagnetic interference.
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