Trial #9
To test the removal of grease on aluminum coupons using heated ultrasonics for 30 minutes.
A 2:1 (33%) solution was created for Water Works and Dimethyl Glutarate was used at 100%. Three aluminum coupons per cleaner were pre-weighed for initial weights. They were then soiled 1/3 of the way with black grease that was given to us by the company and were weighed for dirty weights. The solutions were all heated on the hot plate till they reached 105 degrees Fahrenheit then placed in the ultrasonic tank which was also heated to 105 degrees Fahrenheit. Three coupons per cleaner were placed in the solutions and immersed with ultrasonics for 30 minutes. They were then left to dry for over an hour and final weights were taken.
Cleaners:
- 2:1 Water Works
- 100% Dimethyl Glutarate
Both cleaners were effective at removing grease from the aluminum coupons. Water Works averaged 80%, visually all that was left was patches of grease where the grease had been applied thick. Dimethyl Glutarate was lower at 69% removal, but only clumps of grease were left where the grease was applied thick.
| Cleaner
|
Initial wt of cont
|
Final wt of cont
|
% Removal
|
Average
|
| Water Works
|
0.2358
|
0.0520
|
77.95
|
80.95
|
| 0.2538
|
0.0398
|
84.32
|
| 0.3703
|
0.0719
|
80.58
|
| Dimethyl Glutarate
|
0.4545
|
0.1719
|
62.18
|
68.72
|
| 0.4267
|
0.1297
|
69.60
|
| 0.3681
|
0.0943
|
74.38
|
Both cleaners were effective, grease was applied too thick which resulted in small patches left on the coupon. Next steps are to decrease the amount of grease applied and decrease the time immersed in the ultrasonic tank to check effectiveness at a quicker cleaning time.
No relation