Further comparison of the current cleaner to other aqueous cleaners.
Date Run:
10/01/1998
Experiment Procedure:
Parts were contaminated with the EDM Fluid using a plastic pipette. Observations were made under black light conditions to determine a baseline level of fluorescence. Four chemistries were used for cleaning. Each was made into 5% 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 in operation. 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-EDM Fluid CONTAMINATING PROCESS USED: Oil was made to fluoresce using Spectronics Corporation’s AR-GLO® 1. Oil was applied using a plastic pipette.
Trial Results:
All four chemistries removed the EDM fluid from the parts. It was noted that there was some Zyglo penetrant oil on the parts prior to cleaning. Only one cleaner was extremely effective in removing this oil. Table 1 lists each cleaner and the observations made.
Table 1. Comparison of Chemistries
CHEMISTRY
EDM Fluid Removal
Zyglo Penetrant Oil
Blue Gold
Good/Excellent
Good/Okay
Valtech
Good/Excellent
Okay/Poor
SWR One
Good/Excellent
Okay
Zyglo
Good/Excellent
Excellent
NOTE: Excellent observations corresponded to a large amount of contaminant being removed. Good observations related over half of the contaminant being cleaned. Okay was less than half the contaminant removed. No sign of contaminant removal received a rating of poor.
Success Rating:
A follow up test, usually based on company input.
Conclusion:
The Zyglo Emulsifier ZR-10B was found to be the best remover of the Zyglo Penetrant ZL-27A Oil both in the previous trial and from the last trial. All of the chemistries were effective in removing the EDM fluid.
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