There were 4 different test methods each with multiple steps

​

In test method 1

Step 1 was the removal of oil and grease by using a part washer set at 110 °F and brush with a ultrasonic cleaner 8:1 dilution ratio 

Step 2 Parts were cleaned and inspected with the Sonicor model ulteasonic machine t an 8:1 dilution heated at 160 °F

​

In test method 2

Step 1 and 2 are the  same as test method 1

Step 3 After inspection, parts were cleaned in 2% phosphoric acid based cleaner. Parts were rinsed and re-cleaned in hopes of removal of the corrosion. 

​

In test method 3 

Steps 1 and 2 are the same as test method 1 and 2

Parts appeared clean and carbon free, but there were some breaks on the surface and removing some anodizing due to an excess of metal

​

In test method 4 

Steps 1 and 2 are the same as test method 1, 2, and 3

Parts were highly polished and were clean in 5 minutes 

​

Conclusion

​

Parts should be pre-cleaned and its recommended to to use an ultra filtration system to keep out as much carbon and metal particles to prevent breaks

​

Cleaning could vary 5 minutes to 20 minutes 

​