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Trial Number 0

Trial Purpose:

The purpose of this experiment was to determine the effectiveness of alternative cleaners on company provided soils.

Date Run:

02/10/2021

Experiment Procedure:

Cleaners were prepared to the following concentrations: Metalnox 6386 100%, Dimethyl Glutarate 100%, Water Works Heavy Duty Degreaser 7:1, Mirachem 500 20%, Citranox 2%. Three aluminum coupons were obtained and weighed for each of the cleaners being tested. Coupons were then soiled with a cutting oil provided by the company and a dirty weight was recorded. Coupons were then submerged into their respective cleaners for 15 minutes at room temperature. After 15 minutes had passed, coupons were dried with an air gun at ambient temperature to removed excess solution and allowed to finish drying for 24 hours. Following the drying step, coupons were weighed again and a clean weight was recorded. Effectiveness of the cleaners was determined.

Trial Results:

Cleaner Initial wt of cont. Final wt of cont. %Cont. Removed %AVG
Metalnox 6386 0.0058 -0.0001 101.72 105.02%
0.009 -0.0002 102.22
0.0009 -0.0001 111.11
Dimethyl Glutarate 0.0137 0.0003 97.81 99.89%
0.0108 -0.0002 101.85
0.0058 0 100
Water Works 0.0309 0.0001 99.68 100.06%
0.009 0.0001 98.89
0.0249 -0.0004 101.61
Mirachem 500 0.0021 -0.0005 123.81 107.5%
0.0232 0.0002 99.14
0.0228 0.0001 99.56
Citranox 0.0017 0 100 101.11%
0.0278 0 100
0.012 -0.0004 103.33

All cleaners were effective at removing the cutting oil from aluminum substrates via unheated immersion. It was observed that when applying the soil, the soil was either rapidly absorbed by or evaporated off of the coupon. This can account for the small weights of contaminate and high removal percentages as observed with Metalnox coupon #3 and Mirachem coupon #1. The company has been contacted to determine if this is expected or if more soil should be applied in a retest. Next steps would be to progress testing to the next company soil if a retest is not necessary.

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Upon completion of testing it was determined that all cleaners were effective at removing the cutting oil from aluminum substrates. There was the potential that too little soil was used and the company has been contacted to verify. Next steps would be to progress testing to the next soil if a retest is not necessary.

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