To evaluate the effectiveness of seven TCE alternatives at removing lubricant from aluminum alloys.
Date Run:
07/26/2017
Experiment Procedure:
Pre-weighed aluminum coupons were tested for each aqueous cleaner. Coupons were soiled with Blasocut 2000 Universal Lubricant (CAS: 64742-52-5; 61790-44-1; 68608-26-4; 63449-39-8; 107-41-5; 770-35-4) using a swab to cover the bottom third of the substrate and dirty weights were recorded. Chemistries were prepared with a five percent dilution except for Micro 90, which had a two percent dilution based on vendor recommendations. Coupons were immersed, three at a time, in a beaker filled with 200ml of the chosen cleaner at room temperature (68 F) and cleaned with ultrasonics for five minutes. Final weights were taken after cleaning.
Trial Results:
Cleaner
Initial wt.
Final wt.
% Removed
Average % Removed
SC Aircraft & Metal Cleaner
0.0164
0.0034
79.27
71.62
0.0347
0.0141
59.37
0.0265
0.0063
76.23
Amberclean 527L
0.1494
0.1035
30.72
59.35
0.0481
0.0181
62.37
0.0612
0.0092
84.97
Surface Cleanse 930
0.0606
0.0072
88.12
86.54
0.0900
0.0196
78.22
0.0819
0.0055
93.28
Micro 90
0.0797
0.0260
67.38
59.92
0.0820
0.0422
48.54
0.0938
0.0339
63.86
Solution 2000
0.0622
0.0323
48.07
56.92
0.0498
0.0154
69.08
0.0511
0.0237
53.62
Shopmaster
0.0634
0.0372
41.32
38.58
0.0634
0.0373
41.17
0.0764
0.0510
33.25
Crystal Simple Green
0.0515
0.0054
89.51
88.88
0.0477
0.0076
84.07
0.0532
0.0037
93.05
Ultrasonics improved effectiveness with removing Blasocut 2000 Universal Lubricant from the aluminum coupons. Crystal Simple Green, which was the only positive removal % after unheated immersion for five minutes, looked visually clean and had the highest percent removal.
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
Surface Cleanse 930 and Crystal Simple Green were both effective at removing Blasocut 2000 Universal Lubricant. The other aqueous cleaners showed improvement at removing the soil, but more time may need to be added to see effective removal. Next step would be to increase the time of cleaning.
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