Project #1
To find a more effective cleaner/degreasing chemistry
07/31/2002
425 Copper Alloy and 752 Copper alloy
Uniform insignia, badges
60% brass, 30% 425 alloy, 10% 752 alloy
Small
Less than 1 lb
Grease buffing & polishing
plating or coating
15,000-20,000
50-100
Permag S-4 liquid detergent
Does not break down buffing compound
Prepare parts for plating or final finish
Nine alkaline aqueous products were selected from the laboratories database of effective cleaners. Selections were made based on successful cleaning of buffing compounds and compatibility with brass and copper. Eight successful wipe cleaners will be evaluated using ultrasonics. Two products were successful in removing the buffing compound with ultrasonics alone. Permag S-4 and Micro 90 will be compared directly under conditions similar to current cleaning setup of 1/2% solution and 1-2 minute cleaning time.