Rev. 3 – 06.02.1
The document contains technical notes which should be adhered to, in order to facilitate the processing of items.
Standard dimensions for pieces to be coated are limited to being able to be placed in a cylinder D 900mm x H 1350mm. In special cases, it may be possible to cover items with larger dimensions, which will be evaluated on a case-by-case basis also depending on what type of coating is required. Our Technical Office is available to determine the technical viability based on the above criteria.
Brazed alloys must be resistant to high vacuum pressure ((x10-6 mbar), not contain cadmium and zinc (or elements with low melting points in general), and must be able to withstand temperatures of at least 600C without degassing.
it is possible to completely remove any PVD coating from any kind of tools, molds and components made of steel. This is strongly recommended before any re-coating for gearing hobs (TiN, Hyperlox and Tigral) and aluminium diecasting pins (Superlattice, Tigral)
it is possible to completely remove TiAIN (titanium-aluminium) coatings from tools and hard metal surfaces. It is possible to remove titanium based PVD coatings (only titanium). It is not possible to carry out de-coating on brazed tools (e.g. cutting edge in hard metal and body/support on steel).
It is not possible to remove titanium based PVD coatings from titanium alloy surfaces. It is not possible to chemically remove chromium based PVD coatings (CrN, Newchrome, Superlattice) from the following substrates:
All mounted parts of molds must be disassembled. If it is not possible to disassemble some parts, provide the assembly instructions of the parts. In this case, an additional phase of preparation, called “Degas”, will be required with a dedicated quotation.
Cooling and lubrication holes and channels must be opened and cleaned with solvents. Unscrew the cooling / lubrication channel plugs, or alternatively close these channels with copper seal plugs.
Attach the following information to the material to be covered:
Extend the finishing process beyond the operational area to adjacent surfaces to guarantee uniformity of adhesion of the coating.
For molds for plastic molding, carry out this process before creating final profiles and relative final adjustments. After preparation, prevent oxidisation of the surfaces by applying a thin layer of oil (e.g. Chemetal Gardolube L8255 or equivalent). Do not use any type of grease.
In case of soldering to restore profiles, always use filler material the same as the base material.