VCN AND ULTRASONICS CLEANING
VCN AND ULTRASONICS CLEANING OF POROUS PARTS:
A porous filter having an average pore size of 10 microns was placed in a vacuum chamber, and a vacuum was pulled to less than 1 mmHg. Water-soluble oil was brought into the chamber to submerge the filter. The chamber was brought back to atmospheric pressure, and the filter was weighed to an accuracy of 1 mg.
Two filters were cleaned in a surfactant solution for 2 minutes: one in the VCN process and the other in a 40 kHz ultrasonic bath at 100 watts/gallon. The results are shown in the graph below.
VCN and Ultrasonic Cleaning Efficiency of a Porous Filter
VCN AND ULTRASONICS CLEANING OF A TUBE:
11” long, 0.2” diameter tubes were filled with mineral oil and drained to coat the inside of the tubes with an average weight of 0.25 mg/cm².
Two tubes were cleaned in a surfactant solution for 2 minutes: one in the VCN process and the other in a 40 kHz ultrasonic bath at 100 watts/gallon. The remaining oil was measured using a total carbon analyzer. The results for three different locations in the tube, as shown in the figure, are shown in the graph below.
