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The purpose of this experiment was to continue parts testing with the final top performing alternatives.
Cleaners were prepared to the following concentrations: Dimethyl Glutarate 100% and Citranox 2%. Cleaners were poured into an ultrasonic basket at room temperature. Prior to cleaning, photos of the sections to be cleaned were obtained as visual reference of soil presence. A "fin" of each cast iron steel part was submerged into the respective cleaners and ultrasonic cleaning was conducted for 15 minutes. After 15 minutes had passed, the cleaned area of the part was rinsed in a deionized water bath at room temperature for 30 seconds. The part was then dried with a heat gun to remove all solution. Following the cleaning process, photos were taken as a visual reference of performance.
Overall, both alternatives were effective under the unheated ultrasonic method for cleaning the part. Citranox was observed to undergo a color change from clear to light brown, indicating removal of the soil. It was also noted that all drying times using the heat gun were extremely fast with parts dry in approximately 2 minutes. An overall ranking of the alternatives based on visual performance would be Metalnox 6386 as the best, followed by Citranox, then Dimethyl Glutarate.
Success Rating:Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Upon completion of testing it was determined that both alternatives were effective utilizing the unheated ultrasonic method. An overall ranking of the alternatives based on visual performance would be Metalnox 6386 as the most effective, followed by Citranox, then Dimethyl Glutarate. Next steps would be to contact the company and inform them of testing results.