Trial Purpose:
To evaluate the efficiency one cleaner on GS 34 Soil-1 and GS 34 Soil- 2 from stainless steel and aluminum coupons using manual wipe technique.
Date Run:
06/24/2014Experiment Procedure:
Two sets of stainless-steel coupons were weighed. The first set was soiled with GS 34 Soil-1 and the other set was soiled with GS 34 Soil-2. Both soils were applied at the loading of ~100mg. The soiled coupons were oven dried for 30 minutes with 40 °C for GS 34 Soil-1 and 105 °C for GS 34 Soil-2. Dirty weights were recorded for all of the coupons.
The Eco Green Heavy-Duty Degreaser was supplied ready to use concentration. Three coupons were placed in a Gardner Straightline Washability unit and spray with a cleaning solution and allowed to soak for 1 minute. After soaking, the unit was run for 20 cycles (33 seconds) followed by a quick spray rinse using tap water at room temperature. Final weights were recorded the following day. Efficiencies were calculated and recorded.
Soil 1: Maintenance soil = 10 grams of carbon black, 10 grams iron oxide, 100 ml WD-40, 100 ml hydraulic oil, and 100 ml gear oil.
Soil 2: Production soil = 200 ml Quench Oil and 200 ml cutting oil
Trial Results:
| Cleaner | Initial wt | Final wt | % Removed | Average |
| Maintanance_Aluminum | 0.0806 | 0.0067 | 91.69 | 92.06 |
| 0.0831 | 0.0054 | 93.50 | ||
| 0.0621 | 0.0056 | 90.98 | ||
| Maintanance_ StainlessSteel | 0.1457 | 0.0075 | 94.85 | 95.15 |
| 0.0777 | 0.0042 | 94.59 | ||
| 0.0848 | 0.0034 | 95.99 | ||
| Production_Aluminum | 0.0868 | 0.0059 | 93.20 | 92.33 |
| 0.0733 | 0.0066 | 91.00 | ||
| 0.0819 | 0.0059 | 92.80 | ||
| Production_StainlessSteel | 0.1073 | 0.0034 | 96.83 | 96.71 |
| 0.1140 | 0.0045 | 96.05 | ||
| 0.1420 | 0.0039 | 97.25 |
Overall Eco Green Heavy-Duty Degreaser: 94.06
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.Conclusion:
The Heavy-Duty Degreaser was very effective in the removal of GS-34 soils. The highest removal efficiency was approximately 97% on the stainless-steel coupons covered in production soil. The lowest removal efficiency was approximately 92% on the aluminum coupons covered in maintenance soil. There was a clear difference in efficiency based on which substrate was used. Stainless steel coupons showed a higher removal efficiency than aluminum coupons.
