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Trial Number 3

Trial Purpose:

To evaluate requested products on fourth supplied contaminant using immersion cleaning.

Date Run:

10/18/2007

Experiment Procedure:

Four products were diluted to the requested levels and heated to 135 F on a hot plate. In addition, water was used as a control solution. Eighteen preweighed Aluminum 6061 T6 coupons were coated with Haycut SW 22 tapping oil using a hand held swab. Coupons were weighed a second time to determine the amount of cutting fluid added.

Three coupons were immersed in each solution and cleaned for five minutes using minimal stir-bar agitation. Coupons were rinsed in either DI water or tap water heated to 135 F. One product was rinsed in room temperature tap water as requested. All coupons were dried for 10 minutes in an oven at 140 F. After drying, coupons were weighed a third time and product cleaning efficiencies were calculated.

Requested Procedure:
A. General Process
Soaking for 5 minutes at 135 degrees F and rinsing for 5 minutes at a temperature selected in procedure B below. During the soaking and rinsing the solution should be gently stirred to simulate effect of typical continuous flow filtering in both cleaning and rinse tanks. Then dry thoroughly in drying oven of type that is typically used in precision cleaning applications. The rinse water should be changed after each set of 3 tests to prevent contaminant buildup.

B. FPC testing.
Mix FPC 100-add 7 oz of concentrate to 123 oz of filtered tap water when both are at room temperature. Then run process of A above with rinse tank at room temperature and repeat with rinse tank at 135 degrees F.

C. Other products
Use process A above. at dilutions shown but rinsing with DI water instead of tap water for the Metalnox M6440.

Products to Evaluate
Metalnox M6440 @ 10% solution
Extreme Simple Green Aircraft Cleaner@10% solution.
Gemtec Aircraft cleaner @ 15% solution.
Kleen Tec 715@ 1 part concentrate to 11 parts water

Trial Results:

The same four products removed over 94% of the Haycut SW 22 tapping oil. Water removed just over 80% of the lubricant. The FPC that was rinsed with room temperature water removed 85% of the tapping oil. The table lists the amount of soil added, the amount remaining and the calculated efficiencies.

Cleaner Initial wt Final wt % Removed
Metalnox M6410 0.5736 0.0786 86.30
  0.6087 0.0016 99.74
  0.3612 0.0090 97.51
SC Aircraft 0.7064 0.0208 97.06
  0.4589 0.0322 92.98
  0.5497 0.0120 97.82
KT 715 0.4464 0.0072 98.39
  0.5377 0.0063 98.83
  0.5048 0.0074 98.53
FPC 100 0.4132 0.0188 95.45
  0.5633 0.0431 92.35
  0.5617 0.0244 95.66
Water 0.3494 0.0569 83.71
  0.6849 0.1412 79.38
  0.4876 0.0716 85.32
FPC 100 cold rinse 0.5089 0.0906 82.20
  0.5703 0.0918 83.90
  0.4854 0.0537 88.94

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Cleaning of all four oils was successful by the client supplied product when using a hot water rinse.