Three cleaners were selected from the previous trial and were diluted to 5% using DI water in 600 ml beakers heated to 120 F on a hot plate. Three pieces of titanium tubing were coated with all the oils and the flux at one time. Each part was cleaned in one solution for five minutes using an immersion process.
In addition, one titanium part with sharpie ink, another titanium part with printing ink, one steel part and one carbon fiber part were cleaned in two of the three products in an identical manner. The Today & Beyond was not used to clean a carbon fiber part (not enough pieces). One welded part with flux residue was cleaned in one solution (half of the part was immersed into SC Aircraft & Metal Cleaner) for five minutes. Then the part was cleaned in a second solution (the other half was immersed into Micro 90) for five minutes.
The whole part was rinsed in tap water at 120 F for 15 seconds and dried using air blow off. Visual observations were made to determine which products were the most successful at cleaning the supplied parts.
The table lists the observations made during the cleaning of the different parts.
Product
Substrate
Contaminant
Observations
SC Aircraft & Metal
Removed oil and flux easily
Micro 90
Titanium
Oils & Flux
Removed oil and flux easily
Beyond 2004
Removed oil and flux easily
SC Aircraft & Metal
Ink-Sharpie
Ink easily wiped off
Micro 90
Ink wiped off with some effort
Beyond 2004
Ink required most
SC Aircraft & Metal
Ink-Printed
Started to dissolve ink.
Easily wiped off
Micro 90
Required effort to remove ink
Beyond 2004
Required effort to remove ink
SC Aircraft & Metal
Steel
Oil
Appeared clean
Micro 90
Appeared clean
Beyond 2004
Appeared clean
SC Aircraft & Metal
Titanium, Steel
Flux
Dissolved flux, may have had some rust
Micro 90
Dissolved flux, may have had some rust
Success Rating:
Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
Conclusion:
The SC Aircraft & Metal Cleaner and Micro 90 appear to well suited for cleaning all supplied contaminants using immersion cleaning. The Beyond 2004 required slightly more effort to remove inks but was effective at removing the oil and flux.
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