PVD stands for Physical Vapour Deposition.
It is a process where metal surfaces (hinges, door pulls, lever handles) are
placed inside a vacuum chamber and coated in a thin layer of hard-wearing
metals such as Zirconium
Euroart PVD coating on door hardware
provides more resistance against corrosion and scratch as compared to products
coated using an electroplating process. Most coatings on products using our PVD
process have high temperature durability for exterior weather conditions and
good impact strength, excellent abrasion resistance and higher durability which
reduces the requirements of a protective topcoat. The finish is both highly
durable and elegant.
The PVD coating process involves the
products which are either brass or stainless steel base, are hung on strings
and put through a cleaning process. Chemicals are used to prepare the surface
drying, the parts are placed in a PVD chamber where reactive gases such as
nitrogen and acetylene are used with certain metals to form a thin, metal alloy
that coats the required products.
are then removed from the chamber after cooling down and a QA/QC process is
done to verify that the coating is uniform and no air bubbles are formed during
the coating process.
Euroart PVD finish is made of two coatings. The base
coating is of 6?m (0.006 mm) PVD-black
thick. This is equivalent to the hardness of a lot of natural base metals. After the PVD deposit, a second coating of
20~30?m (0.02~0.03mm) thickness of transparent colored lacquer, (baking
lacquer) is done. The surface hardness of this technique of PVD coating is
3000HV as compared to the surface hardness by traditional plating of 800HV
(measured as pe Vickers Hardness Test).
The Euroart process pictorially is
demonstrated below :
ss 2.PVD Process
Images of the PVD process as done in the
factory can be found at the end of blog.
Maintenance of PVD Black finish
PVD treated door furniture is recommended
for areas subject to harsh climatic conditions. The PVD treated door hardware
products are resistant to salt spray which makes them more ideal for use in
external applications compared to lacquered or painted metal that tend to
tarnish fairly quickly.
The PVD coating on stainless steel base
material makes it more resistant to scratch, however, it does not make it
completely scratch proof. PVD coated products are virtually maintenance free
and are guaranteed not to discolour.
Periodic cleaning of PVD coated products
may be performed with a soft cloth dampened with water, without using
particularly aggressive detergents. As with any metal finish the more regularly
the item is cleaned, the longer its looks and quality will last. However, like
any surface, if a deliberate attempt to scratch/damage the surface is made, it
will get scratched.
At EuroArt, we provide a comprehensive line of
door hardware, including an exclusive range of mortise locks, lever handles,
cylinders, hinges and accessories. Our manufacturing and production process
guarantees a strict quality management system and compliance to highest
Images of the PVD process from our Manufacturing Center