Trial #1
To evaluate successful cleaners at higher concentrations
Four products from the previous trial were diluted to 10% using DI water in 600 ml beakers. Each solution was heated to 130 F on a hot plate, followed by a 5 minute degassing in a Crest 40 kHz ultrasonic tank. Twelve preweighed coupons were coated with Fuchs Lubricants Co Renodraw 12 using a hand held swab. A glass rod was then used to ensure a thin, evenly distributed layer of lubricant, more closely matching actual operating conditions. Coupons were then reweighed using a Denver Instruments A250 Balance. Three coupons were cleaned for 8 seconds in a cleaning solution, followed by an 8 second ultrasonic tap water bath rinse. Coupons were dried using air blow off at room temperature for 10 seconds. Once coupons were dry, final weights were measured and efficiencies were calculated.
Three of the four products removed over 89% of the lubricant from the coupons within 8 seconds. The table below lists the amount of contaminant applied to the coupon, how much was not removed and the efficiency for each coupon cleaned.
Table 1. Contaminant Removal
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| EXP 1400
|
0.0406
|
0.0008
|
98.03
|
|
|
0.0863
|
0.0036
|
95.83
|
|
|
0.0696
|
0.0103
|
85.20
|
| Surface Cleanse
|
0.1161
|
0.0043
|
96.30
|
|
|
0.0790
|
0.0034
|
95.70
|
|
|
0.0764
|
0.0012
|
98.43
|
| Inproclean 3800
|
0.0678
|
0.0009
|
98.67
|
|
|
0.0666
|
0.0033
|
95.05
|
|
|
0.0667
|
0.0176
|
73.61
|
| Beyond 2005
|
0.0423
|
0.0185
|
56.26
|
|
|
0.0311
|
0.0101
|
67.52
|
|
|
0.1148
|
0.0455
|
60.37
|
| E3HB
|
0.1477
|
0.1117
|
24.37
|
|
|
0.0421
|
0.0127
|
69.83
|
|
|
0.0501
|
0.0348
|
30.54
|
The three successful products will be tested again at a higher concentration.
No relation