Trial Purpose:
To evaluate successful aqueous cleaners on second buffing compound.
Date Run:
09/21/2005Experiment Procedure:
Four products were selected from the lab's previous test results based on performance. Each product was used at 5% diluted with DI water and heated to 130 F on a hot plate. A 600 ml beaker was filled with each product and placed on a stir plate.
Twelve preweighed 260 Brass coupons were coated with the Matchless Metal Polishing Co Z-66 (1344-28-1) buffing compound. The compound was applied by heating the coupons and the buffing compound with a Master Appliance Heat Gun. The hot buffing compound was rubbed across the surface. Coupons were allowed to cool to room temperature and weighed a second time to determine the amount of contaminant applied. Three coupons were cleaned in each product for 5 minutes using stir-bar agitation. After cleaning, the parts were rinsed for 15 seconds in 120 F tap water bath and then dried for 30 seconds using dry, compressed air at room temperature. Once dry, final weights were recorded and efficiencies were calculated for each product.
Trial Results:
Two of the products removed over 60% of the buffing compound after 5 minutes of immersion cleaning. All four products would benefit from using ultrasonic energy. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
| Cleaner | Initial wt | Final wt | % Removed |
| Formula 815 GD | 0.3424 | 0.1906 | 44.33 |
| 0.2937 | 0.0998 | 66.02 | |
| 0.2716 | 0.0773 | 71.54 | |
| Micro 90 | 0.5382 | 0.4110 | 23.63 |
| 0.7646 | 0.4603 | 39.80 | |
| 0.4170 | 0.2252 | 46.00 | |
| MC 132 | 0.2454 | 0.0661 | 73.06 |
| 0.5378 | 0.1819 | 66.18 | |
| 0.5132 | 0.1735 | 66.19 | |
| Texolite 1740 XL | 0.4581 | 0.2780 | 39.31 |
| 0.2249 | 0.0821 | 63.49 | |
| 0.1674 | 0.0743 | 55.62 |
The aqueous cleaners were not as effective as the drop-in solvents; however, the efficiencies for the top two aqueous cleaners were almost as effective. The table below lists the drop-in solvent efficiencies.
Drop-in Solvent Results
Product Efficiency
| Ak 225 | 53.31 |
| Ensolv | 68.44 |
| CCA | 67.1 |
| MCA | 61.7 |
| Lenium ES | 68.44 |
| Solvon IP | 71.48 |
| Solvon PB | 63.89 |
Success Rating:
A follow up test, usually based on company input.Conclusion:
The top three aqueous products will be evaluated for removing the third buffing compound under similar conditions.
