C900 Dry Ice Cleaning Machine for PCBA Boards

The principle of dry ice cleaning involves high-speed impact of dry ice particles, driven by compressed air, against the surface of the object to be cleaned or deburred. The dry ice instantaneously shatters and sublimates, absorbing a significant amount of heat. Due to the different coefficients of thermal expansion between the burrs/contaminants and the substrate, stains on the PCBA board surface rapidly crack. The shattered dry ice particles come into contact with the object’s surface, and due to the sublimation of dry ice, their volume expands nearly 800 times in an instant. This creates a “microscopic bomb” effect at the point of impact, causing rapid cracking, and burrs and stains are quickly stripped from the object’s surface, achieving optimal cleaning results. Using a dry ice cleaning machine to clean PCBA circuit boards is an efficient, reliable, and environmentally friendly method. Utilizing the low-temperature characteristics of dry ice allows for the quick freezing of contaminants and their removal from the PCBA board without causing damage to the board or affecting the electronic components. It is suitable for various cleaning scenarios of PCBA circuit boards, such as rosin cleaning, flux cleaning, post-weld cleaning, coating cleaning, carbon accumulation cleaning, and oxidation cleaning.

• Cost-saving: Since carbon dioxide is a component of the atmosphere, it is easily accessible and inexpensive. The only power-consuming device is the air compressor. Dry ice directly sublimates during the cleaning process, eliminating the cost of disposing of the cleaning medium.
• Environmental Safety: CO2 is a non-toxic substance that meets the safety requirements of the USDA/FDA/EPA. Replacing toxic chemical cleaning with dry ice cleaning fundamentally protects employees from the harm of chemical substances.
• Dry ice cleaning can be done online, significantly reducing downtime. It avoids the need for protection, cooling, disassembly, and treatment of wastewater and sludge associated with traditional methods, saving drying time, and thus offering high production efficiency and minimal time consumption.
• Wide application range: For different cleaning conditions, simply replace the dry ice cleaning nozzle and adjust the cleaning working distance to meet various needs. The operation is simple, safe, and cost-effective, with considerable overall benefits.
• Unlike steam and high-pressure water cleaning, dry ice cleaning does not damage wires, control elements, or switches. In the food industry, dry ice cleaning greatly reduces the possibility of bacterial growth compared to water cleaning.