Valve seat coating

[shantanu]

Hi All,

A customer - a power plant wants to protect its valve seat from erosion caused due to high pressure water ( no corrosion as de mineralized water) ; pressure upto 150 kg/cm2. Customer tried stellite 6 welding and failed; my best guess was due to a high HAZ during welding of the small part ;

Suggestion on what coating an work? And would any sealer stay at the said pressure?

Regards

Shantanu

[djewell]

WC-Co-Cr has been used successfully in this application.

[Axis Machine]

What is the base material?
Is it valve trim from a Fisher body valve, stem, etc.