Three products from the previous trial and two additional products were diluted to 5% using DI water in a 600 ml beaker. All five products were heated to 130 F on a hot plate and then immersed into a Crest 40 kHz ultrasonic tank filled with water heated to 130 F. The products were degassed for five minutes. Fifteen preweighed coupons were contaminated with the Metalube Corp ML-119.2 dry lubricant using a hand held swab. After the coupons sat for 30 minutes a second weight was recorded to determine the amount of soil added to the coupons. Three coupons were immersed into each solution and cleaned for five minutes using ultrasonic energy. Coupons were then rinsed in tap water at 120 F for 15 seconds and dried using a Master Appliance Heat Gun at 500 F for 30 seconds. The coupons were then allowed to cool to room temperature and weighed again. Efficiencies for the five cleaners were calculated and recorded.
Trial Results:
All five cleaners were successful in removing over 95% of the lubricant using ultrasonic energy. The table below shows the amount of soil added and removed for each coupon.
Cleaner
Initial wt
Final wt
% Removed
Formulat 815 GD
0.0158
0.0006
96.20
0.0088
0.0010
88.64
0.0076
0.0000
100.00
SC Aircraft
0.0084
0.0003
96.43
0.0161
0.0002
98.76
0.0243
0.0006
97.53
Polyspray Jet 790 P
0.0098
0.0003
96.94
0.0340
0.0003
99.12
0.0233
0.0007
97.00
Inproclean 3800
0.0045
-0.0001
102.22
0.0142
0.0004
97.18
0.0066
0.0002
96.97
Micro 90
0.0120
0.0003
97.50
0.0084
0.0007
91.67
0.0088
-0.0002
102.27
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Two client requested products will be evaluated using immersion and ultrasonic energy.
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