To evaluate aqueous cleaning products for machine oil removal from Barry Industries parts and determine the best recommended product.
Date Run:
08/06/2019
Experiment Procedure:
Two contaminated aluminum parts were provided by the company. One pre-soiled aluminum part was used per cleaner. Dilutions and temperatures used for each cleaner were based on vendor recommendations. Parts were immersed individually into a beaker with a stir bar for 15 minutes, and visual observations were recorded every five minutes. Cleaned parts were rinsed in heated (95o F) tap water for five minutes and dried for five minutes with an air gun at room temperature (68 oF). All parts were photographed before and after cleaning (see Appendix A). A final cleanliness ranking was conducted comparing the cleaned parts.
Overall Cleanliness Rating Table
Score
Description
1
Total removal of contaminant. No residue.
2
Partial removal of contaminant. Some residue remaining.
3
Minimal removal of contaminant. Substantial amount of residue remaining.
Trial Results:
Visual Observations
Cleaner
5 Mins
10 Mins
15 Mins
Rinse
1
- particles floating in dilution
- clear dilution
- dilution getting cloudy
- thick layer of bubbles forming
- increased blue particles floating in dilution
- coupon is shiny
- no visible residue
2
- micro bubbles coming off of coupon
- bubbles forming at top of dilution
- dilution getting cloudy
- thick layer of bubbles forming
- dilution getting cloudier
- visible line of soil on coupon (where solution didn’t reach)
Note: line is etching.
Additional Notes:
Although the CleanerSolutions Database said Emerald HD 2 was safe for aluminum, a visible line appeared after cleaning on the aluminum that wasn’t there with the coupons. After confirming etching potential with the vendor, it would not be appropriate to use Emerald HD 2 on aluminum parts.
Overall Cleanliness Ranking
Cleaner
Ranking
1
1
2
1
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Aquavantage 1400 (5%) was effective. Emerald HD 2 should not be used on aluminum parts. Micro 90 should be considered as a second aqueous alternative based on previous testing.
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