What does NBPs Chemical Milling Solution do?
NBP has a proprietary chemical milling solution for cleaning zinc die cast based parts. This solution is a chemical bath and does not require electrical current. It will remove the zinc oxide layer and prepare the part for plating. It can clean out cold shut areas, remove minor flash, debris and burrs. Our normal chemical mill removes .0003″ – .0006″ of material but can be increased to about .001″. The advantages of Chemical Milling is that a thin layer of zinc oxide or carbonate deposited over a pure zinc die cast surface is removed and the potential for casting blisters can be eliminated. This also allows for high temperature applications without the casting blisters to appear under the intermetallic stresses that are formed from the copper plate.
