Working Principle of Fully Automatic Ultrasonic Cleaning Machine The core principle is ultrasonic cavitation effect, combined with automatic conveying, rinsing and drying processes. The ultrasonic transducer converts high-frequency electric energy into mechanical vibration and transmits it to the cleaning liquid. Numerous tiny vacuum bubbles form and collapse continuously in the liquid, known as cavitation effect. Strong impact force and micro-jets are generated upon bubble collapse, scouring workpiece surfaces, blind holes and gaps to strip oil, metal debris and dust without damaging precision parts. The fully automatic model uses a conveyor for automatic loading & unloading. Workpieces go through ultrasonic cleaning, multi-stage rinsing and dehydration/vacuum drying in sequence. The whole process runs automatically without manual operation.