There are several variations of the basic screw section available from CSC.
Along with various materials of construction, additional processes can be used
to improve the performance of a screw for a particular application.
HARDSURFACED SCREW SECTIONS
One option is to hardsurface the pipe and/or flight surfaces of the
screw section. CSC has an automated hardsurfacing process which can apply powder
to take the hardness of the treated area up to 60Rc. Applied using a plasma
transfer arc, the powder is embedded into the pipe/flight for a solid bond, more
durable than coatings which only sit on the surface.
Hardsurfacing is used for applications involving highly abrasive materials
such as glass or sand. It can also be a cost effective option for units which
are difficult to maintain, the initial extra cost being offset by the reduced
maintenance required due to extended service life.
