Aluminum Chips during Powder Coating

[kaleem546]

We process cut/route a lot of Aluminum extrusion and that goes to wash (iron phosphate) and than for powder coating.

We are suspecting that a lot of chips goes into the washer and are sprayed again and again and sticks to the product which is powder coated later on.

Would anyone suggest the possible solution..?

 

[btrueblood]

Some ideas: Use a filter in the wash water pump intake line, or use a settling tank seperated by a baffle from the return sump. If you already have a filter, clean or replace it. Try adding some baby shampoo to the water (very small amount, to act as a surfactant and cause floating aluminum chips to sink). Incorporate a final fresh-water rinse to your wash cycle.