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Trial Number 4

Client Number 465

Project Number 2

Trial Purpose:

To evaluate the effectiveness of aqueous and non aqueous cleaners in removing a variety of oil and grease soils from brass.

Date Run:

01/31/2023

Experiment Procedure:

Eighteen brass coupons, three per soil per cleaner, were weighed to record their initial weights.  The coupons were then soiled with their respective soils; LMKT lapping compound, Honing oil, and slide gel lubricant.  About 0.5 grams of each soil was spread on the bottom third of each coupon with a swab.  The dirty weights of the coupons were then recorded.  The coupons were then subjected to 15 minutes of unheated ultrasonics in their respective cleaners.  Once cleaned, each coupon was dried with air blow off for about 3 minutes. After drying, the clean weights of the coupons were recorded.

Trial Results:

Cleaner Soil Initial wt of cont. Final wt of cont. %Cont Removed % AVG % Overall
Surface Cleanse 930 10% LMKT Lapping Compound 0.0064 0.0024 62.50 59.09 69.42
0.0082 0.0030 63.41
0.0037 0.0018 51.35
Honing Oil 0.0266 0.0052 80.45 80.62
0.0306 0.0029 90.52
0.0189 0.0055 70.90
Slide Gel 0.0366 0.0119 67.49 68.54
0.0376 0.0116 69.15
0.0216 0.0067 68.98
Shopmaster LPH 10% LMKT Lapping Compound 0.0189 0.0031 83.60 74.27 58.04
0.0094 0.0014 85.11
0.0061 0.0028 54.10
Honing Oil 0.0108 0.0030 72.22 62.78
0.0090 0.0038 57.78
0.0120 0.0050 58.33
Slide Gel 0.0162 0.0145 10.49 37.07
0.0248 0.0147 40.73
0.0230 0.0092 60.00

Success Rating:

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

Conclusion:

There are too many outliers to make a conclusion on the efficacy of these cleaners.  

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