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Trial Number 2

Trial Purpose:

To evaluate alternative cleaners on second supplied contaminant.

Date Run:

05/16/2007

Experiment Procedure:

Six products from the previous trial were selected and used at full strength. The cleaning solutions were all heated to 130 F on a hot plate.
Eighteen preweighed alloy coupons were coated with the second supplied lubricant and weighed a second time to determine the amount of contaminant added to each coupon. Three coupons were immersed into each solution and cleaned for 5 minutes using stir-bar agitation. Coupons were rinsed in room temperature tap water for 15 seconds and air dried using compressed dry air for 30 seconds. A final weight was recorded and efficiencies were calculated for each coupon cleaned.

Trial Results:

Five of the six products removed over 95% of the lubricant. Three of these removed over 99%. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Soy Gold 1100 1.4978 0.0286 98.09
  1.5557 0.0541 96.52
  1.5184 0.0291 98.08
Solsafe 245 1.9557 0.0186 99.05
  1.9062 0.0077 99.60
  2.1998 0.0053 99.76
Shopmaster RC 2.1195 0.0117 99.45
  1.8953 0.0095 99.50
  1.2542 0.0080 99.36
DS 108 2.2218 0.0181 99.19
  1.7480 0.0167 99.04
  1.3172 0.0106 99.20
D Greeze 500 LO 2.1602 0.1368 93.67
  1.5610 0.0311 98.01
  2.0320 0.0392 98.07
SC Supersolve 1.8005 0.5534 69.26
  2.2033 0.4855 77.96
  1.8246 0.5985 67.20

Success Rating:

Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.

Conclusion:

The five products that removed over 95% will be tested on the third supplied contaminant under the same conditions.

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