Trial #1
To evaluate cleaners using a water rinse
The three successful aqueous based cleaners from the previous trial were diluted to 10% using DI water in 600 ml beakers. The one semi-aqueous product was used at 50% diluted with DI water. The client's current cleaner was included as the fifth product. All of the products were heated to 120 F on a hot plate.
Fifteen preweighed aluminum coupons were coated with client supplied cutting fluid, Speedfam Vehicle 210 mixed with an abrasive. The oil and abrasive were first mixed in a bottle. The mixture was added to coupons using a swab and then heated for 10 minutes using a Master Appliance heat gun. The coupons were allowed to cool to room temperature before weighing a second time.
Three coupons were cleaned in each solution for 10 minutes using stir-bar agitation. Coupons were rinsed in a tap water bath at 120 for 30 seconds and were dried using air blow off at room temperature. Once dry, coupons were weighed a final time and efficiencies for each cleaner were calculated.
Four of the five products tested with the rinse improved their efficiency. The Hurrisafe 9450 was the only one to decrease its effectiveness with the water rinse. The other four removed over 80% of the oil/abrasive mix. Bio T 300 B removed nearly all of the oil/abrasive mix. The table below lists the amount of soil added, the amount remaining after cleaning and the efficiency for each coupon cleaned.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| Formula 825 GD
|
0.1616
|
0.0251
|
84.47
|
|
|
0.1356
|
0.0027
|
98.01
|
|
|
0.0912
|
0.0204
|
77.63
|
| SC Aircraft & Metal Cleaner
|
0.1024
|
0.0030
|
97.07
|
|
|
0.0858
|
0.0074
|
91.38
|
|
|
0.1106
|
0.0120
|
89.15
|
| Metalnox M6314
|
0.0968
|
0.0035
|
96.38
|
|
|
0.0644
|
0.0173
|
73.14
|
|
|
0.0825
|
0.0243
|
70.55
|
| Hurrisafe 9450
|
0.1121
|
0.0472
|
57.89
|
|
|
0.1070
|
0.0366
|
65.79
|
|
|
0.0891
|
0.0344
|
61.39
|
| Bio T 300 B
|
0.0938
|
0.0001
|
99.89
|
|
|
0.0869
|
0.0003
|
99.65
|
|
|
0.1088
|
-0.0005
|
100.46
|
The five products tested will be used to clean the supplied cutting fluid in the next trial.
No relation