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Trial Number 0

Trial Purpose:

To identify cleaners for the removal of second lubricant.

Date Run:

02/14/2002

Experiment Procedure:

Four products were selected from the last project and two were submitted from client. All six products were diluted to 5% using DI water in a 600 ml beaker and heated to 140 F on a hot plate. Each solution was degassed for 5 minutes in a Crest 25 kHz ultrasonic tank.
Eighteen preweighed coupons were coated with the Atofina Copperskin 510 metal working compound (CAS#s: 64742-52-5, 123-95-5, 8016-28-2, 8002-13-9) using a hand held swab. Coupons were then weighed again to determine the amount of contaminant applied. Three coupons were cleaned in each solution for 20 seconds, followed by a 5 second tap water rinse at 140 F and dried for 10 seconds using a Master Appliance heat gun at 500 F. After cooling, coupons were weighed for a final time and efficiencies were calculated.

Trial Results:

The four previous products were very successful in removing the lubricant from the aluminum coupons in 20 seconds. . A couple of the coupons had some oil remaining at the very top of the coupon. This was the area that was above the water line during cleaning. If the coupon had been completely submerged, this oil would probably have been removed. The two client supplied cleaners removed less than 86% of the oil. These coupons had substantial amounts of oil remaining. Unlike the previously described coupons, the oil that remained was below the water line. The following table lists the calculated efficiencies for each solution.

Cleaners Initial wt Cont. wt Clean wt. Initial wt of cont. Final wt of cont. %Cont Removed Observations
  22.4548 22.7403 22.4982 0.2855 0.0434 84.80 Oil residue
BCS Co 22.348 22.6197 22.3975 0.2717 0.0495 81.78 Oil residue
  22.2537 22.5166 22.2779 0.2629 0.0242 90.79 Oil residue
  22.4405 22.7295 22.4425 0.289 0.002 99.31  
Brulin 22.378 22.5122 22.3869 0.1342 0.0089 93.37 oil at top
  22.3975 22.6192 22.4034 0.2217 0.0059 97.34  
  22.4339 22.7188 22.5429 0.2849 0.109 61.74 Oil residue
Houghton 22.3998 22.7103 22.5877 0.3105 0.1879 39.48 Oil residue
  22.3953 22.6702 22.4853 0.2749 0.09 67.26 Oil residue
  22.3636 22.5369 22.3734 0.1733 0.0098 94.35 oil at top
Oakite 22.4025 22.5897 22.402 0.1872 -0.0005 100.27  
  22.3733 22.5276 22.3733 0.1543 0 100.00  
  22.3588 22.4956 22.3604 0.1368 0.0016 98.83  
Sunshine 22.3947 22.6314 22.3988 0.2367 0.0041 98.27  
  22.4415 22.7275 22.4466 0.286 0.0051 98.22  
  22.4603 22.781 22.4619 0.3207 0.0016 99.50  
Today 22.3488 22.4876 22.3498 0.1388 0.001 99.28  
  22.4391 22.6062 22.4404 0.1671 0.0013 99.22  

Success Rating:

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

Conclusion:

The four successful cleaners will be used under the proposed operating conditions of 2, one second cleaning and 1, one second rinsing stages.  The supplied silver tape will be lightly coated with the lubricant and analyzed using OSEE.

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