To evaluate selected alternatives for cleaning the supplied buffing compound from brass. Compare results with supplied alternative cleaning product
Date Run:
09/08/2006
Experiment Procedure:
Six products were selected from the lab's database of testing results based on supplied client information. Products were selected based on buffing compound removal potential and compatibility with brass metal substrates. A seventh product was supplied by the client for comparison. Each product was diluted to 5% in 250 ml beakers using DI water and heated to 130 F on a hot plate.
Twenty-one preweighed coupons were coated with the grey buffing compound. The compound was heated to melting so that a handheld swab could spread the compound across the coupons. Coupons were weighed a second time to determine the amount of buffing compound added. Three coupons were cleaned in each solution for five minutes using minimal stir bar agitation. Coupons were rinsed for 15 seconds in a tap water bath at 120 F and dried using a dry compressed air for 30 seconds. Once dry coupons were weighed a final time and product efficiencies were calculated.
Trial Results:
Three products removed over 95% of the buffing compound during the 5 minutes of immersion cleaning. The following table lists the amount of buffing compound applied, the amount remaining and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
MC 132
0.1287
0.0002
99.84
0.1525
0.0020
98.69
0.1283
0.0065
94.93
Polyspray Jet 790 XS
0.1986
0.0106
94.66
0.2059
0.0023
98.88
0.1438
0.0063
95.62
Detergent 8
0.1015
0.0001
99.90
0.1717
0.0003
99.83
0.1667
0.0002
99.88
ND 17
0.0989
0.0321
67.54
0.1554
0.0300
80.69
0.2467
0.1095
55.61
FO 2085 M
0.4065
0.2039
49.84
0.2086
0.0313
85.00
0.2441
0.0458
81.24
Aquacleen
0.2445
0.2433
0.49
0.1909
0.1328
30.43
0.2942
0.2936
0.20
Current Alt.
0.2585
0.0858
66.81
0.1590
0.0250
84.28
0.2482
0.0191
92.30
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Three products were found to work on the supplied buffing compound. Cleaning with ultrasonic energy will increase the effectiveness of the products especially when dealing with intricate parts. With the products successful on the buffing compound, the next step will be to evaluate these cleaners on supplied parts at or after workshop.
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