Eighteen (18) coupons were weighed after being precleaned. The coupons were then contaminated with the rust preventive compound and placed in an conventional oven at 100 F for two hours. The coupons were allowed to reach room temperature and weighed. The same six chemistries from the pervious trial were used using the same operating conditions.
SUBSTRATE MATERIAL: Stainless Steel
CONTAMINANTS: Tectyl 506, Petroleum based rust preventative
Calgon's AK-6215 cleaner solution was by far the most effective in the removal of the hard rust preventive substance. The solution had very good cleaning capabilities in the previous trial as well, 99.3% removal of the slushy, rust-preventive substance. Also the solution was able to be filtered quite readily, which would result in a longer bath life. From the results of the two experiments, Calgon AK-6215 appears to be the best cleaner for use in cleaning both rust-preventive materials. The next step in testing for Morgan will be to test cleaners for the removal of the final contaminant.