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Trial Number 4

Trial Purpose:

To reevaluate alternative cleaners under modified conditions

Date Run:

11/12/2004

Experiment Procedure:

The four alternative contact cleaners were used at full strength at room temperature. Two of the four products were in supplied to the lab in spray cans. Two products had to be applied using a manual spray pump. (The Ak225 does come in a spray can but was not available at the time of testing).
Twelve of the previously cleaned 6061 aluminum coupons were contaminated with Fuch's Lubricants Renocut 6515 NC (mineral oil, vegetable oil). Three coupons were sprayed with each contact cleaner for an additional 30 seconds and allowed to air dry. The coupons sprayed with the Gemtek product were briefly sprayed with compressed air. Final clean weights were recorded and efficiencies were calculated.

Trial Results:

All four of the products improved with the added cleaning time, removing over 97% of the lubricant. The Gemtek product had the greatest improvement with the added air blow off, increasing form 67% to 97%. The table below lists the initial amount of soil added, the final amount remaining after the second cleaning and the resulting efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Heavy Duty Degreaser C 0.2651 0.0034 98.72
  0.2505 0.0012 99.52
  0.1663 0.0025 98.50
Flux Remover C 0.3089 0.0034 98.90
  0.1857 0.0012 99.35
  0.3141 0.0015 99.52
SC Evaporative Electronics Cleaner 0.2403 0.0096 96.00
  0.3344 0.0050 98.50
  0.2086 0.0070 96.64
AK 225 0.3502 0.0035 99.00
  0.3829 0.0063 98.35
  0.2876 0.0054 98.12

Success Rating:

A follow up test, usually based on company input.

Conclusion:

The alternative contact cleaners and the aqueous products will be evaluated on the supplied parts.

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