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Trial Number 1

Trial Purpose:

To evaluate supplied products on second requested contaminant.

Date Run:

10/17/2007

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 Cool Tool II Tapping lubricant 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:

Four products removed over 90% of the Cool Tool II lubricant. Water removed just under a third of the lubricant. The FPC that was rinsed with room temperature water removed just over 80%. The table lists the amount of soil added, the amount remaining and the calculated efficiencies.

Cleaner Initial wt Final wt % Removed
Metalnox M6410 0.6889 0.0072 98.95
  0.1282 0.0029 97.74
  0.1608 0.0005 99.69
SC Aircraft 0.4318 0.0149 96.55
  0.5937 0.0179 96.99
  0.5275 0.0229 95.66
KT 715 0.3984 0.0050 98.74
  0.4373 0.0059 98.65
  0.5751 0.0038 99.34
FPC 100 0.3584 0.0334 90.68
  0.4009 0.0466 88.38
  0.2337 0.0230 90.16
Water 0.1711 0.1357 20.69
  0.2192 0.1533 30.06
  0.3322 0.1740 47.62
FPC 100 cold rinse 0.3867 0.0317 91.80
  0.5719 0.0520 90.91
  0.1623 0.0583 64.08

Success Rating:

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

Conclusion:

Products will be tested on the third supplied contaminant under the same conditions.