Trial #1
2nd contaminant cleaning
There are no related objects.
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.
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
|
The Flow-Matic system was more effective than the traditional ultrasonic method.
No relation