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Trial Number 3

Client Number 75

Project Number 1

Trial Purpose:

Further comparison of current cleaner with two alternative products.

Date Run:

09/17/1998

Experiment Procedure:

Parts were immersed into a beaker containing the oil. Observations were made under black light conditions to determine a baseline level of fluorescence. The two successful chemistries from the previous trial and the client supplied cleaner were made into 15% solutions using DI water in 600 mL beakers. The beakers were placed into a 40 kHz Crest ultrasonic unit model 4Ht 1014-6 and heated to 150 F. One part was placed into each beaker and cleaned for 3 minutes without the ultrasonic unit working. Parts were inverted and cleaned for another 3 minutes using the ultrasonic energy. Each part was removed and rinsed with tap water at 120 F for 20 seconds and dried with a Master Appliance Heat Gun model HG-301A. Black light observations were made and recorded.

SUBSTRATE MATERIAL: Nickel Alloy-Inconel
CONTAMINANTS: Oil--Zyglo Penetrant ZL-27A

Trial Results:

All three chemistries removed almost all of the oil from the parts. Table 1 lists the cleaner, observations and ranking.

Table 1. Comparison of Chemistries

CHEMISTRY   OBSERVATIONS RANKING (1 = Best, 3 = Worst)
Blue Gold  Lots of oil seeping out of holes 3
Valtech  Some oil seeping out of holes 1
SWR One  Moderate amount of oil seeping out of holes 2

The results were consistent with the previous testing except for one condition.  The amount of oil remaining on the parts was higher during this trial than in the previous testing.  The ratings remained the same with Valtech product cleaning the best.

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Two cleaners, Valtech and SWR One, were determined to clean as well as the client’s current cleaner. Next test will be conducted using the EDM fluid.

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