PCB Technical - PCB circuit board cleaning steps

PCB circuit board cleaning steps
Pay attention to product innovation in terms of energy saving and emission reduction. PCB factoriesmust learn to attach importance to Internet technology and realize the practical application of automated monitoring and intelligent management in production through the integration of overall industry knowledge.
PCB circuit boards are widely used in China, and pollutants will be generated during the manufacturing process of printed circuit boards, including residues of flux and adhesives and other pollutants in the manufacturing process such as dust and debris. If the PCB board cannot effectively guarantee a clean surface, the resistance and leakage will cause the PCB circuit board to fail, thereby affecting the service life of the product. Therefore, cleaning the PCB circuit board is an important step in the manufacturing process.

1. Semi-aqueous cleaning mainly uses organic solvents 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, safe to use, but must be rinsed with water and then dried.

2. Water purification technology is the future development direction of clean technology. It is necessary to establish pure water source and discharge water treatment workshops. Using water as the cleaning medium, surfactants, additives, corrosion inhibitors and chelating agents are added to the water to form a series of water-based cleaning agents. Can remove water solvents and non-polar contaminants.
3. It is used in the soldering process without clean flux or clean solder paste. After soldering, it directly enters the next process for cleaning. The free cleaning technology is currently the most commonly used alternative technology, especially for mobile communication products. The method of using sex instead of ODS.
4. Solvent cleaning is mainly used for solvent dissolution and removal of pollutants. Solvent cleaning requires simple equipment due to its fast volatilization and strong solubility.
The above four cleaning technologies can achieve a certain cleaning effect, but how to clean the PCB board quickly and effectively? The application of ultrasonic cleaning machine can be solved. It uses UHF to transform into kinetic energy in the liquid medium to produce a cavitation effect, forming countless tiny bubbles, and then hit the surface of the object, causing surface dirt to fall off, so as to achieve the effect of cleaning. Because it passes through the liquid, as long as the liquid can touch the surface, it can be cleaned in place without leaving dead corners.
It 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 of the advantages of using ultrasonic cleaning is that it can effectively restore, improve the ability of pads and components, and reduce electromagnetic interference. Our factory is located in China. For decades, Shenzhen has been known as the world's electronics R&D and manufacturing center. Our factory and website are approved by the Chinese government, so you can skip the middlemen and buy products on our website with confidence. Because we are a direct factory, this is the reason why 100% of our old customers continue to purchase on iPCB.