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Trial #19

Trial #19

To evaluate the effectiveness of SB-2, SB-11, SB-22, and SB-23 in removing Honing Oil from copper and brass coupons as a potential replacement for TCE with an unheated ultrasonic cleaning method.

2024

31

1

49

49

Coupon

02/25/2024

2.00

Ultrasonics

Tatyanna Moreland Junior

Brass
Copper

Oil

None

Air dry

Gravimetric

Three copper and brass coupons were used for each cleaner being tested, for a total of 12 coupons per cleaner. The initial weights of each coupon were recorded. The bottom third of every coupon was soiled by applying the contaminate with a swab. The dirty weights of each coupon were then recorded. The coupons were then subjected to unheated ultrasonic in the cleaners for 15 minutes. After the coupons were cleaned, they were left to air-dry overnight. The next morning, the clean weights of each coupon were taken.

Substrate Cleaner Coupon # Initial weight of cont. Final weight of cont. %Cont Removed Average % Removal
Copper SB-2 21 0.0429 0.0566 -31.93 -276.87
25 0.0167 0.0632 -278.44
27 0.0168 0.1042 -520.24
SB-11 15 0.0658 0.0537 18.39 -73.92
16 0.0271 0.0794 -192.99
39 0.0333 0.049 -47.15
SB-22 11 0.0688 0.0064 90.70 91.86
16 0.0275 0.0018 93.45
17 0.0257 0.0022 91.44
SB-23 2 0.0349 0.0041 88.25 89.90
29 0.0376 0.0048 87.23
40 0.0536 0.0031 94.22
Brass SB-2 2 0.0488 0.0481 1.43 -36.45
5 0.0298 0.0369 -23.83
23 0.0284 0.0531 -86.97
SB-11 10 0.0463 0.0324 30.02 35.72
11 0.0274 0.0216 21.17
17 0.0536 0.0236 55.97
SB-22 9 0.0271 0.004 85.24 87.32
15 0.0565 0.0059 89.56
34 0.0444 0.0057 87.16
SB-23 14 0.0244 0.0013 94.67 78.95
18 0.0214 0.005 76.64
25 0.0148 0.0051 65.54

SB-2 and SB-11 did not dry properly overnight, and in some cases, their final contents were higher than their initials. SB-22 and SB-23 seemed like effective alternatives. Further testing can be done to create the ideal range of cleaning time and contaminants added. 

No relation

Name Class Section
Document Evaluation #0 Evaluation 3
Document Evaluation #1 Evaluation 3
Document Evaluation #2 Evaluation 3
Document Evaluation #3 Evaluation 3
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