Trial Purpose:
2nd contaminant cleaning
Date Run:
04/04/2002Experiment Procedure:
Eighteen preweighed coupons were coated with The Valvoline Co, Tectyl 505 (8052-41-3) rust preventative, using a hand held swab. Coupons were reweighed. Nine coupons were clipped to wire racks and immersed into the Flow-Matic machine and cleaned for 1 minutes using ultrasonics at 92 F, removed and rinsed in a tap water spray and re-mmersed into the ultrasonics for an additional 1 minute followed by a second 5 second rinse. The nine coupons were then dried using an air knife for 15 seconds and then using a Master Appliance heat gun at 500 F for 15 seconds. The second set of nine coupons followed the same cleaning cycle except they were hung on a wire stand and immersed into a Crest 40 kHz ultrasonic tank.
Trial Results:
Comparison of the two processes revealed that the Flow-Matic system was more effective than the traditional ultrasonic equipment. The following table lists the results obtained during the evaluation.
Table 1. Cleaning Efficiencies
| Process | Flow-Matic | Traditional |
| 99.93 | 99.46 | |
| 99.93 | 98.41 | |
| 98.97 | 98.90 | |
| 99.53 | 98.94 | |
| 99.95 | 96.30 | |
| 100.04 | 97.40 | |
| 99.24 | 97.45 | |
| 100.12 | 98.71 | |
| 100.06 | 99.51 | |
| Average | 99.75 | 98.34 |
| Std Dev | 0.41 | 1.08 |
Success Rating:
A follow up test, usually based on company input.Conclusion:
The Flow-Matic system was more effective than the traditional ultrasonic method.
