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Trial Number 2

Trial Purpose:

To evaluate top performing products using heated ultrasonic cleaning for wax removal.

Date Run:

10/04/2009

Experiment Procedure:

Eight cleaners were selected from the previous trial based on effective cleaning of the wax. Seven aqueous cleaners were diluted to 5% using DI water in 600 ml beakers. One powder cleaner (Uniclean KC 3000) was diluted to 2% using DI water in 600 ml beaker. All eight cleaners were heated to 150 F in a Crest 40 kHz Ultrasonic tank filled with water.
Twenty-four preweighed glass coupons were coated with wax by heating the coupons with a Master Appliance heat gun and wiping solid wax across the surface. Once coupons were cooled, a second weight was recorded. Three coupons were cleaned in each solution. All cleaners were used for 10 minutes.
Following cleaning, the coupons were rinsed in a DI water spray at 60 F for 15 seconds and dried one day at room temperature. Final weights were recorded and efficiencies were calculated.

Observations were made on bath conditions following cleaning to determine which products could be reused more effectively.

Trial Results:

Cleaner Initial wt Final wt % Removed Bath life observation
Valtron sp 2200 5% 0.369 0.0001 99.97 wax lump is located on bottom  
  0.3781 -0.0002 100.05  
  0.4813 0.0003 99.94  
Contrad 70 5% 0.5945 0.0035 99.41 wax was dissolved in cleaner
  0.5682 0.0065 98.86  
  0.7296 0.0067 99.08  
uniclean - kc3000 2% 0.8632 0.0072 99.17 wax layer is located on the surface of cleaner
  0.8536 -0.0004 100.05  
  0.6926 0.0126 98.18  
polychem 2000p 5% 0.8153 0.0106 98.70 wax was dissolved in cleaner
  0.7273 -0.0010 100.14  
  0.4025 0.0000 100.00  
inproclean 3800 5% 0.5235 -0.0009 100.17 wax was dissolved in cleaner
  0.6236 -0.0016 100.26  
  0.4138 0.0073 98.24  
valtron dpan031 5% 0.5398 0.0002 99.96 wax lump is relatively bigger
  0.4787 0.0035 99.27 and it is located on bottom
  0.3221 0.0000 100.00  
daraclean 212 5% 0.3534 -0.0002 100.06 wax was dissolved in cleaner
  0.4252 0.0003 99.93  
  0.4596 -0.0005 100.11  
daraclean 235 5% 0.3131 0.0011 99.65 wax made a mass and layer which is
  0.4669 -0.0005 100.11 on the surface of cleaner
  0.4737 -0.0013 100.27  

Success Rating:

A follow up test, usually based on company input.

Conclusion:

The ultrasonic cleaning was successful for all cleaners. All products will be tested on supplied dirty parts.

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