This study investigates the effect of frequency on cleaning of various Hard Disk Drive (HDD) components. The disk drive components used for this study was aluminum metal spacer, e-coated disk separator and plastic separator. The frequency used for this study was 58/132 kHz, 132 kHz, 360 kHz, 470 kHz and 1 MHz. In this study multiple extraction method was used to find the cleanability and erodability of the parts and liquid particle counter was used to measure the particle concentration in the extracted solution. The result indicates that dual frequency i.e 58/132 kHz is more suitable for cleaning of aluminum metal spacer and e-coated disk separator, 360 kHz and 470 kHz is more suitable for cleaning of plastic disk separator. The result shows that 360 kHz is the supreme frequency for final rinsing. 360 kHz frequency also found to be a better washing and rinsing frequency for various HDD components. Cleaning the parts with multiple frequencies gives higher cleanabili
Abstract-In this paper, we describe an experimental study undertaken to investigate ultrasonic and megasonic fields in the frequency range 25 kHz -360 kHz, temperature range 30 ο C -70 ο C and re-circulation range 0 -10 GPM with respect to their surface cleaning and erosion potential. Measurements are performed using three different methods -LPC, cavitation intensity and aluminium foil test -to assess these mechanisms mainly for disk drive components. Conclusions are drawn regarding the nature of interactions between high-frequency, high-intensity ultrasonic fields and temperature. Recommendations are provided for optimal settings to maximize surface cleaning for variety of disk drive components.
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