Ultrasonic cleaning machines for aluminum electrolytic capacitors rely on cavitation and the implosion of microscopic bubbles in a cleaning solution to remove contamination from surfaces and tight clearances. The process normally consists of bubble cleaning, ultrasonic precision cleaning, air-knife water removal, hot-air drying, and automatic part transfer.
In the bubble-cleaning stage, ultrasonic vibration in the cleaning liquid generates countless small bubbles. As these bubbles rise and collapse, they produce impact force that dislodges dirt and residues from the capacitor surface. The cleaning tank and transducer mounting structure should be rigid and well sealed to keep ultrasonic energy stable; for these wetted parts, Hansheng Automation offers custom machining to customer drawings, with material options such as 316L stainless steel or titanium.
During ultrasonic precision cleaning, the cleaning liquid penetrates fine gaps around the aluminum case and lead wires to remove remaining contaminants. Precision-machined ultrasonic plates and fixtures help distribute cavitation evenly and reduce dead zones, which is important for consistent cleaning of small capacitors.
The air-knife stage uses high-speed airflow to blow cleaning liquid off the capacitor surface. Slit nozzles and manifold components are typically machined with tight width and straightness tolerances to maintain uniform airflow and avoid water residue.
In hot-air drying, high-temperature air evaporates surface moisture. Ducts, deflectors, and conveyor parts made from heat-resistant stainless steel or aluminum alloy are deburred and passivated to reduce particulate contamination and ensure complete drying.
The entire sequence is controlled by computer, and the discharge table transfers capacitors through each stage. Guide rails, locating blocks, and transition plates are machined to suit the conveyor layout, helping maintain smooth movement and reduce scratching or jamming.
