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Trial Number 3

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 awhile 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.

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