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To evaluate cleaners removing vanishing oil on company provided steel coupons.
Three coupons per cleaner were contaminated with vanishing oil using a swab on the bottom third of the coupon on one side. The coupons were immersed into the unheated cleaners for 10 minutes with visual observations every five minutes. An additional step for aqueous cleaners (Cleaners 1-6) was added after visual residue was apparent after cleaning. Coupons cleaned in the aqueous cleaners were placed in a five minute unheated tap-water bath and air dried before taking final observations.
|Cleaner||5 mins||10 mins||Rinse and Dry|
|1||no visible removal/clear dilution||no change||no change|
|2||no visible removal/clear dilution||no change||no change|
|3||no visible removal/clear dilution||no change||no change|
|4||no visible removal/clear dilution||no change||no change|
|5||no visible removal/clear dilution||a little removal seen||no change|
|6||no visible removal/clear dilution||no change||no change|
|7||no visible removal/clear dilution||a little removal seen||no change|
Most were effective at removing the contaminant, but a majority of the coupons had visible residue even after a five minute rinse. Sta Sol ESS 160 and Liquinox were the only two cleaners that removed the vanishing oil and didn’t really leave a visual residue like the other coupons.
Success Rating:Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Sta Sol ESS 160 and Liquinox 1% were the most effective cleaners. The next step will be to identify four other cleaners and continue testing with heated immersion on the two effective cleaners.