What surface finish is required prior to TD coating?
The goal is to polish the working surfaces to a mirror finish of 5-8 RMS. Polishing is actually a very critical step that ensures the best possible performance of our coating. A highly polished surface will reduce friction and improve material flow. Less friction is one of the keys to: • reducing or eliminating lubrication • reduction or elimination of galling • better part appearance • reduction in maintenance In addition, a highly polished surface provides better adhesion of our coating to your tool. If machine lines are not polished out, you essentially have a very hard file after you add our coating. There are several techniques to keep in mind when polishing. Please refer to our technical bulletin that covers some tips on polishing.
