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Trial Number 0

Client Number 514

Project Number 2

Trial Purpose:

To evaluate the effectiveness of multiple cleaners in removing both the grease and wax contaminants from aluminum coupons.

Date Run:

09/25/2023

Experiment Procedure:

Three cleaning products were chosen using previous testing data on their performance for removing other waxes and greases.  Three pre weighed aluminum coupons were assigned to each cleaner for each substrate for a total of 18 aluminum coupons.  Half of the coupons were soiled with the glyconol wax soil (about 0.5 grams) by placing a small ball of wax onto the bottom third of the coupon, heating it with a heat gun to melt the wax, and then spreading the wax into a strip across the bottom third of the coupons.  The other half of the coupons were soiled with the royco 27A grease (about 0.5 grams) by applying to soil to the bottom third of the coupons with a swab.  After soiling, the dirty weights of the coupons were recorded.  The coupons were then subjected to 20 mins of unheated ultrasonics in their respective cleaners.  The coupons were left to air dry overnight before the clean weights were recorded.

Trial Results:

Cleaner Soil Initial wt of cont. Final wt of cont. %Cont Removed % AVG % Overall
Metalnox M6324R Glyconol Wax 0.3536 0.1054 70.19 77.63 152.06
0.3104 0.0821 73.55
0.2656 0.0288 89.16
Royco 27A Grease 0.0768 -0.1380 279.69 226.48
0.1856 -0.1519 181.84
0.2207 -0.2602 217.90
Shopmaster LPH Glyconol Wax 0.4065 0.3470 14.64 50.44 65.18
0.2870 0.0206 92.82
0.6323 0.3550 43.86
Royco 27A Grease 0.1767 0.0291 83.53 79.92
0.0825 0.0216 73.82
0.2105 0.0370 82.42
Soyclear 1500 Glyconol Wax 0.2270 0.0169 92.56 92.81 89.82
0.4814 0.0410 91.48
0.2945 0.0165 94.40
Royco 27A Grease 0.1583 0.0006 99.62 86.83
0.1382 0.0143 89.65
0.1202 0.0346 71.21

Metalnox M6324R attacked and stripped the substrate of aluminum.  This is why the clean weights for the Royco grease soiled coupons are significantly lower than the initial weights.  The only reason that the coupons soiled with the wax do not exhibit this also, is because while the metalnox did also strip these substrates, it also failed to remove the wax leading to higher clean weights than initial weights.  

Success Rating:

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

Conclusion:

Metalnox M6324R is not and effective cleaner for aluminum substrates because it attacks aluminum.  Shopmaster LPH is not an effective cleaner in removing wax but it is a somewhat effective cleaner in removing the royco grease.  Soyclear 1500 is an effective cleaner in removing both soils, however it would require a manual wiping step post cleaning to remove all of the wax which may not be the most efficient process for the client.

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