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Trial Number 2

Trial Purpose:

To evaluate products on second supplied contaminant using ultrasonic cleaning

Date Run:

11/09/2004

Experiment Procedure:

The same six products from the previous trial were used at the same dilutions and time (5 min). Each beaker was immersed into a Crest 40 kHz ultrasonic tank filled with water heated to 115 F. The products were degassed for 5 minutes.
Eighteen preweighed 6061 aluminum coupons were again contaminated with Valenite Inc. Valcool VNT 910 (102-71-6, 141-43-5, 26896-20-8, 112-05-0) using a swab. A second weighing was performed to determine the amount of soil added. Three coupons were cleaned in each product for 5 minutes with ultrasonics. Coupons were again rinsed in water at 120 F for 15 seconds and dried with air blow off at room temperature for 30 seconds. Once dry, final weights were recorded and efficiencies were calculated.

Trial Results:

All six products removed over 89% of the coolant within 5 minutes of cleaning. Five of the six removed over 96%. The client's current cleaner had the highest cleaning efficiency followed closely by Brulin 815 GD. 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
Amberclean Q3 0.0098 0.0001 98.98
  0.0190 -0.0001 100.53
  0.0435 0.0002 99.54
Formula 815 GD 0.0216 0.0000 100.00
  0.1134 0.0001 99.91
  0.0730 0.0008 98.90
Inproclean 3800 0.0435 0.0017 96.09
  0.1306 0.0005 99.62
  0.0971 0.0042 95.67
Surface Cleanse 930 0.0651 0.0012 98.16
  0.1170 0.0040 96.58
  0.0348 0.0017 95.11
Valtron SP 2275 0.0963 0.0002 99.79
  0.1114 0.0030 97.31
  0.0567 0.0017 97.00
Ionox HC2 0.1680 0.0040 97.62
  0.0906 0.0059 93.49
  0.0147 0.0033 77.55

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Ultrasonic cleaning of both contaminants were effective with many of the aqueous based products in under 5 minutes of cleaning. Supplied parts will be cleaned in the top two cleaning products.

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