Trial #2
To evaluate successful cleaners using ultrasonic energy
The seven successful cleaners and the client's current cleaner from the previous trial were again diluted to 5% in 600 ml beakers using DI water. Each was heated to 130 F in a Crest 40 kHz ultrasonic tank filled with water.
Twenty-seven preweighed coupons were coated with the lubricant using a plastic eye dropper and allowed to sit for 2 hours. The coupons were weighed. Three coupons were cleaned in each solution for 5 minutes using ultrasonic energy. Following the cleaning, a 30 second tap water rinse at 120 and a 1 minute heat gun drying at 500 F was performed. Coupons were allowed to return to room temperature and reweighed. Efficiencies were calculated and recorded.
Contaminant: Fuchs Renocut 127 (mineral oil)
Valtech Valtron SP 2275 again had the highest efficiency, removing 99.99% of the lubricant from the aluminum coupons. Four other products removed over 99%, including the client supplied cleaner. The following table lists the results for each coupon cleaned.
| Cleaner
|
Coupon 1
|
Coupon 2
|
Coupon 3
|
Average
|
| Brulin
|
99.78
|
98.17
|
99.40
|
99.12
|
| Buckeye
|
95.98
|
97.81
|
97.65
|
97.15
|
| Envirosolutoins
|
98.54
|
98.60
|
99.39
|
98.84
|
| Gemtek
|
96.82
|
96.13
|
97.74
|
96.89
|
| Innovative
|
99.98
|
99.34
|
99.54
|
99.62
|
| Today
|
99.87
|
99.92
|
99.90
|
99.90
|
| Valtech
|
99.98
|
100.02
|
99.97
|
99.99
|
| Texo
|
99.88
|
99.60
|
99.66
|
99.71
|
The use of ultrasonics increased the effectiveness for all but one cleaner. The five most effective cleaners will be used to clean supplied parts from the client.
No relation