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Trial Number 3

Trial Purpose:

To evaluate selected cleaners on second supplied buffing compound.

Date Run:

10/17/2006

Experiment Procedure:

Two alternative products were selected from the previous trial based on effectiveness. A third product was selected based on past testing results from the lab's database. Each product was diluted to 10% in 250 ml beakers using DI water and heated to 130 F on a hot plate.
Nine preweighed silver plated coupons were heavily coated with the Mosher Company Inc Moco Steel Cut #2318 (68434-50-2, 555-43-1, 57-11-4, 26635-92-7, 1344-28-1) buffing compound by heating the buffing compound and rubbing it onto the surface of the coupons. Coupons were weighed a second time to determine the amount of buffing compound added. Three coupons were cleaned in each solution for five minutes using minimal stir bar agitation. Coupons were rinsed for 15 seconds in a tap water bath at 120 F and dried using a dry compressed air for 30 seconds. Once dry coupons were weighed a final time and product efficiencies were calculated.

Trial Results:

Two of the products removed over 95% of the buffing compound using immersion cleaning. The following table lists the amount of buffing compound applied, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Polyspray Jet 790 XS 0.0492 -0.0001 100.20
  0.0941 0.0006 99.36
  0.3210 0.0258 91.96
Detergent 8 0.0850 0.0064 92.47
  0.1276 0.0029 97.73
  0.2230 0.0056 97.49
Texolite 1734 XL 0.1288 0.0389 69.80
  0.1218 0.0503 58.70
  0.1004 0.0242 75.90

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 two successful products, Polyspray Jet 790 XS and Detergent 8, will be used to clean supplied parts using immersion cleaning.

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