How is Chrome Powder Coating
I have seen several companies powder coat items with a "chrome" finish...how do they achieve this?
What is done differently to have a chrome finish?
Sales - Columbus, Ohio, USA
First of two simultaneous responses -- +++++++
The painters just apply the chrome powder like any other powder,they can't manipulate the paint. It is the manufacturer of the paint that makes it a chrome and they are secretive about their formulations.
supply chain electronics
Wake Forest, North Carolina
Second of two simultaneous responses -- +++++++
The term "chrome finish" when applied to powder coating depends upon who you talk to. The powder supplier who will offer a bright aluminium based powder or the powder coating applicator who offers deposited metal chrome followed by a protective clear coat of powder.
Chrome powder: Who offers the best chrome powder is still a talking point between various powder applicators around the world. However, we all know that even with the best intentions one has to use one's imagination to agree that it is a good match for a chrome finish. Chrome metal deposition uses two different methods to deposit a chrome effect onto the substrate, i.e. plating and vacuum metallization. A good place to start to understand the process of vacuum metallization would be a visit to http://www.muellercorp.com/process.htm. A recent patent explained that vacuum deposition of a chrome finish comprises of four stages: a cleaning or preparation stage, application of an Epoxy powder base coat to ensure adhesion of the metal coatings. A two part metal coating applied via a PVD process, consisting of a Ni/Cr base and a Cr layer. To complete the process an exterior grade powder i.e. acrylic or polyester is applied as a protection against wear and tear.
For an excellent explanation of the plating process visit http://www.calchrome.com/process.php.
Finally, a dialogue (letter 29622 1st June 2004) between the editor Mr. Ted Mooney and Angeliki Skafida - - Athens, Greece on this very subject would also be a very good source of information.
Martex Paints Ltd
Birmingham, United Kingdom
I m working with that process , actually we have some Aluminium parts to powder coat so in that process we do chromatising after degreasing & than followed by semi gloss auto silver powder coating now parts are sent to oven for 12 - 15 minutes on 200*c.
Wet process employee - Pantnagar, Uttrakhand, India
December 18, 2008
It is very interesting. Does anybody know who is making Cr powder? Thank you all.Michael Wu
- Toronto, Ontario, Canada