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Trial Number 3

Trial Purpose:

To evaluate top alternatives on third supplied contaminant.

Date Run:

05/16/2007

Experiment Procedure:

Five products from the previous trial were selected and used at full strength based on past performance. The cleaning solutions were all heated to 130 F on a hot plate.

Fifteen preweighed alloy coupons were coated with the third 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:

All five of the products removed over 90% of the lubricant. All but one removed over 95% and two of these removed over 97%. 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 0.4782 0.0441 90.78
  0.3664 0.0353 90.37
  0.4703 0.0279 94.07
Solsafe 245 0.4263 0.0187 95.61
  0.5162 0.0109 97.89
  0.5374 0.0425 92.09
Shopmaster RC 0.3993 0.0263 93.41
  0.4303 0.0141 96.72
  0.5563 0.0203 96.35
DS 108 0.3071 0.0107 96.52
  0.3295 0.0097 97.06
  0.3694 0.0078 97.89
D Greeze 500 LO 0.5063 0.0146 97.12
  0.4665 0.0085 98.18
  0.3407 0.0133 96.10

Success Rating:

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

Conclusion:

The effective products will be tested on the fourth supplied contaminant following the same laboratory procedures.

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