To evaluate selected product for cleaning supplied parts using ultrasonic energy
Date Run:
10/16/2006
Experiment Procedure:
One product was selected based on the results of the previous testing. The product was diluted to 5 and 10% solutions by volume in 600 ml beakers using DI water. Both dilutions were first heated to 130 F while being immersed in a water bath. The solutions were degassed for at least 5 minutes using a Branson 3510 ultrasonic unit operating at 40 kHz. Two part types were cleaned in each solution at the 130 F temperature, rinsed in tap water at 120 for 15 seconds and dried using dry compressed air at room temperature for 30 seconds. Observations were made on the level of cleanliness.
The same to dilutions were then heated to 150 F in the water bath. Three part types were cleaned following the above-described method.
Trial Results:
The table below lists the observations made for the various parts that were cleaned at 130 and 150 F in the 40 kHz ultrasonic tank.
Conc.
Temp
Part
Observation
5
130
Rifles
Not all clean. Buffing compound in small holes
10
130
Rifles
Cleaner than the 5% but still had problem with holes
5
130
Bracket
Almost completely cleaned after 5 minutes
10
130
Bracket
Completely cleaned after 4 minutes
5
150
Rifles
Not all clean. Buffing compound in small holes
10
150
Rifles
Completely cleaned
5
150
Bracket
Completely cleaned after 3.5 minutes
10
150
Bracket
Completely cleaned after 2 minutes
5
150
Buckle
Back had a white appearance
10
150
Buckle
Back had a white appearance
Success Rating:
Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
Conclusion:
The 10% solution of Polyspray Jet 790 XS at the 150 F was the only combination that was successful in cleaning the three part types supplied for cleaning.
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