Browse past lab clients by general industry sectors
To evaluate cleaning of supplied parts using previously successful cleaning products.
Four products were selected based on the previous testing performed for the client. All products were heated to 130 F on a hot plate. Table 1 lists the products evaluated and the corresponding concentrations.
The cleaning solution/beaker was placed in a Crest 40 kHz ultrasonic tank model 4Ht 1014-6 filled with water heated to 130 F and degassed for five minutes. Two parts were placed into the suspended beaker and cleaned for five minutes. Rinsing used DI water at 130 F for 30 seconds. Drying took place in an oven at 240 F for 15 minutes. Parts were analyzed for appearance after cooling to room temperature.
SUBSTRATE MATERIAL: Brass parts-bellows
CONTAMINANTS: Kester Solder 1544 Rosin Flux-(Ethanol CAS#64-17-5;2-Butanol CAS#78-92-2*;Modified Rosin CAS#8050-09-7)
All four solutions were effective in removing bulk amounts of the flux. The surface of the bellows appeared to be brighter and free of contaminants. Table 2 lists the rankings of which cleaner made the parts look the best.
Table 2. Appearance After Cleaning
|Cleaner||Armakleen E 2002||Bio-T 300 B||Inproclean 4000 T||Safety Wash CRC|
|Ranking (1 Cleanest)||3||2||4||1|
All four cleaning solutions had liquid remaining inside the parts after the 15 minutes of drying. Bio-T 300 B had the least amount of solution based on tapping the parts on counter and observing the release of liquid.
Success Rating:A follow up test, usually based on company input.
During the next test, Armakleen and Inproclean will be used at 10%, while the other two will be used at the present strength. Drying will be performed using a vacuum oven in an effort to eliminate the moisture. The use of a centrifuge may also help with drying the inside of the parts