Hardfacing Materials
Hardfacing Materials
(OP)
I would like to identify an alternative technique to electroplating for the application of a chromium carbide based hardfacing surface layer. Typically the layer would be 0.002" - 0.006" thick and should operate at temperatures of up to 700°C. The area to be coated is small and has a detailed geometry, so HVOF would not be suitable.
I would assume that PVD or micro-arc welding may be suitable tecniques, but if anyone can provide specific details regarding equipment and materials it would be very much appreciated.
Regards
I would assume that PVD or micro-arc welding may be suitable tecniques, but if anyone can provide specific details regarding equipment and materials it would be very much appreciated.
Regards





RE: Hardfacing Materials
RE: Hardfacing Materials
This will cover a variety of components, but typically the material shall either be a 12% Cr, 2½% Ni steel or a Ni-based superalloy.
The main wear mechnaism would be fretting (the components are gas turbine parts).
RE: Hardfacing Materials
We also have a number of gas turbines. The fretting you mentioned, is this at the blade root location (rotating blades in the wheel and vanes) in the compressor section for the 12Cr (403 ss) materials?
RE: Hardfacing Materials
RE: Hardfacing Materials