Dura Prep is a special powdered compound that is used for hand cleaning of parts just prior to electroplating or Micro Tuff impregnation. Dura Prep is a unique blend of mild abrasives, detergents, activators, and surfactants that physically and chemically remove particles and debris. This assures a clean surface, so that maximum adhesion is obtained. Its use prevents pitting and nodulization caused by grinding-polishing debris being left on the part surface.
Dura Prep is also very helpful in removing fingerprints and stop-off residue just prior to plating and, in many cases, can replace liquid honing, vapor blasting, or glass beading operations. The use of Dura Prep is highly recommended, wherever possible, so that the optimum plating quality is obtained.
Dura Prep is also used as a cleaning agent for dies, tooling sets and similar components during use and prior to the re-application of Micro Tuff™ Polymer.
Dura Prep is applied by hand, as slurry with water on an abrasive pad or rag. A swirling motion, both with and against the grain, should be used. Continue until the surface is clean of all water breaks.
The very fine abrasives in Dura Prep will not scratch polished surfaces of steel, stainless steel, and similar alloys. Use a lighter pressure for brass, copper, and other soft metals.
A quality deposit requires that the surface be thoroughly cleaned prior to reverse etching. During the manufacturing and machining processes, the parts pick up “fines” or microscopic metal slivers that adhere to the surface. Wiping the article with a clean white cloth will show the presence of such particles. During the reverse etch operation, these “fines” stand up from the surface and, once the part is plated, become a course of roughness and nodules. In many cases, subsequent grinding, honing or polishing of the surface will break off these chrome-plated “fines” and pitting of the surface will result.
The use of Dura Prep offers an easy method of removing such particles, as well as thoroughly cleaning the part and preparing the surface for a good quality deposit. Also, it is particularly helpful for heavy build-up type work.
Dura Prep is rinsed off the part with water. A separate tank may be used. The Dura Prep, being heavier than water, will sink to the bottom; it can be recovered and reused several times. Also, Dura Prep can be rinsed off in Polystrip-26, if a separate tank is not available. Its presence in the solution will not cause any difficulties.
If necessary, Dura Prep can be allowed to dry on a surface without any harm. Subsequent rinsing will easily remove the film.
This process uses industrial strength chemicals which must be handled carefully and in accordance with the directives provided in the individual MSDS forms. Read and understand the MSDS on all of these chemicals before handling or using. Ensure that all regulatory standards are followed and limit personal exposure as required for Cr(VI) and other chemicals by OSHA.
MicroTuff™ is a Trade Mark of Plating Resources, Inc. Copyright and all other World Rights reserved, 1991, 1993, 1995, 1996, 1999, 2014.