Article Contents

1. Introduction
2. Sweeping Frequency (1)
3. Sweeping Frequency (2)
4. Sweeping Frequency (3)
5. Power Control
6. Center Frequency Control (1)
7. Center Frequency Control (2)
8. Center Frequency Control (3)
9. Center Frequency Control (4)
10. Conclusion

Ideal Ultrasonic Parameters for Delicate Parts Cleaning
(p. 8)

previous pagenext page

Center Frequency Control (continued)

Consider using the same selected center frequency as was used to generate the graph in figure 7 but increase the exposure time to the ultrasonics. The result is figure 8.

Figure 8 shows that a higher percentage of all particles are removed with longer exposure time with 100% removal at particle sizes within the optimum range for the selected frequency. However, the efficiency of particle removal for particle sizes distant from the optimum size is poor.

Consider the effect on the curve in figure 8 if a higher center frequency is selected. The curve in figure 9 results. The optimum size particle removal is a set of smaller size particles at this higher ultrasonic frequency.

previous pagenext page