 
The improwing of the wear resistance can be done by many methods.
Typical object are pumps handling slurries, powders, sand, clay
and turbulent fluid flow.
You can enlarge the pictures by clicking
the thumbnails.
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The combination of materials are quite common today. The
base materials provide the mechanical properties and the
surface coating designed to provide the corrosion performance,
wear resistance or structural properties. The coating
can extend the equipment life considerably. |
We can use "cold" projection process in cases
where no distortion or change of metal structure in the
base material can be tolerated.
In the picture the turner is spraying a thin coating onto
a new side plate. |
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| The casings are usually repaired by welding
and the protection against abrasion and corrosion can
be improved by spraying a thin coating layer on the surface. |
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In many cases the impeller vanes are coated when running
under heavy abrasion circumstances. |
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A new casing cover can be processed with a special mordant
after metal spraying in order to get a better protect
against abrasion. |
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The modern composites use advanced epoxies reinforced
with ceramics to form a composite that is both durable
and abrasion resistant. There are a lot of applications
where the composites can solve metal resurfacing problems
and save money in a way that is faster and more economical
than many other technologies. |
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The base work must be done well and especially the surfaces
must be cleaned thoroughly before coating. Sometimes the
old coating must be removed mechanically with a short
borer. |
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| These pictures show clearly what happens
when the base metal has been dirty or rusty before coating.
A badly worn rotor shown in the picture had to be renewed
after two years running. We manufactured a new stainless
steel rotor by welding. |
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A badly worn vacuum pump before repair. There were holes
in the casing, the rotor and the covers affected by rust.
The pump was repaired and coated inside with composites. |
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