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Trial Number 2

Client Number 426

Project Number 1

Trial Purpose:

To evaluate the effectiveness of five drop-in solvents at removing lubricant from aluminum alloys.

Date Run:

07/12/2017

Experiment Procedure:

Preweighed aluminum coupons were tested for each cleaner. Coupons were soiled with Oak 7a lubricant (CAS: 64742-53-6; 68909-65-9) using a swab to cover the bottom third of the substrate and dirty weights were recorded. Coupons were immersed, three at a time, in a beaker with 200ml of the chosen cleaner at room temperature (68 F) for five minutes. Visual observations were taken during this time, and final weights were recorded after cleaning. This process was repeated for each cleaner.

Trial Results:

Cleaner Initial wt. Final wt. % Removed Average % Removed
Fluosolv CX        
  0.0524 0.0062 88.17 89.35
  0.1075 0.0037 96.56  
  0.1427 0.0238 83.32  
Fluosolv NC        
  0.0331 -0.0002 100.6 101.26
  0.0707 -0.0012 101.7  
  0.0881 -0.0013 101.48  
Solstice PF        
  0.0821 0.0007 99.15 99.87
  0.0946 0 100  
  0.0882 -0.0004 100.45  
Solstice PF-2A        
  0.0579 0.0003 99.48 100.1
  0.0987 -0.0008 100.81  
  0.0649 0 100  
Vertrel Sion        
  0.1144 0.0031 97.29 98.36
  0.0743 0.0023 96.9  
  0.0911 -0.0008 100.88  

Four out of the five drop-in solvents visually performed the same and were effective at removing Oak 7a. No substrate damage was observed on coupons with a percentage higher than 100%. The high removal percentage was potentially due to the cleanliness of coupons before testing. Fluosolv CX had some residue still on the coupons after five minutes.

Success Rating:

Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.

Conclusion:

All five drop-in solvents were effective at removing Oak 7a from aluminum. Next step would be to repeat the procedure for EDM 30 lubricant.

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