Trial Purpose:
Five sets of 26-28 titanium parts were provided pre-contaminated with J2. Cleaners were heated to vendor recommended temperatures before immersing the parts into an ultrasonic tank for 15 minutes. Visual observations were recorded overall with notes and a set of three parts per cleaner were evaluated by three lab technicians, labelled A-C in Table 1, for cleaner and contaminant residue according using the rating key below.
Experiment Procedure:
Five sets of 26-28 titanium parts were provided pre-contaminated with J2. Cleaners were heated to vendor recommended temperatures before immersing the parts into an ultrasonic tank for 15 minutes. Visual observations were recorded overall with notes and a set of three parts per cleaner were evaluated by three lab technicians, labelled A-C in Table 1, for cleaner and contaminant residue according using the rating key below.
Rating Key:
| Rating Key | |
| 1 | No Residue |
| 2 | Slight Residue |
| 3 | Noticeable Residue |
| 4 | Considerable Residue |
| 5 | Severe Residue |
Trial Results:
Table 1: Visual Rating Results
| Cleaner | Conc. (%) | Temp. (°F) | Before Cleaning Rating | After Cleaning Rating | Average Score | ||||
| A | B | C | A | B | C | ||||
| Dowanol PnBGE | 100 | 100 | 4 | 5 | 4 | 2 | 2 | 1.5 | 2 |
| Ozzy Juice SW 3 | 100 | 110 | 3 | 4 | 2.5 | 3 | |||
| Metalnox M6386 | 100 | 130 | 1 | 1 | 1.5 | 1 | |||
| Sta-Sol ESS 160 | 100 | 106 | 2 | 2 | 1.5 | 2 | |||
| Liquinox | 1 | 150 | 5 | 5 | 5 | 5 | |||
Visual Observations:
Dowanol PnBGE - Slight cleaner residue and soil residue that remained on parts after cleaning.
Ozzy Juice SW3 - Slight cleaner residue and soil residue that remained on parts after cleaning.
Metalnox M6386 - No cleaner residue or soil residue on parts after cleaning
Sta-Sol ESS-160 - No cleaner residue or soil residue on parts after cleaning, however, it took a while for the parts to completely dry
Liquinox - Cleaner residue and soil residue remained on parts after cleaning. Cleaner will need a rinse step going forward with testing.
Success Rating:
Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.Conclusion:
Dowanol PnBGE, Metalnox 6386, and Sta-Sol ESS 160 were the most effective at removing J2 soil from titanium parts using heated ultrasonics.
