Chromium Carbide Liners

The product
Chromium Carbide plates have a unique combination of optimum abrasion resistant Chromium Carbide alloy, fused on to a ductile and weldable mild steel base plate. The Chromium Carbide alloy consists of complex Cromium particles suspended in a hard and stable matrix.

The carbide hardness is approximately 1750 Brinell. The matrix is approximately 450 Brinell, giving a macro-hardness of approximately 52 Rc. The relief checks that form in this material are desirable, and indicate there is no simultaneous cracking away of the hard layer from the mild steel base.

Typical Applications
Chromium Carbide applications are particularly effective where sliding abrasion is present.
For example, in chutes, liners, hoppers, flasks, bucket kits, skid plates, apron feeders, cyclones, fan blades, etc.

The mild steel backing material allows Chromium Carbide plates to be rolled into sections for pipes and cyclones. Fixing can easily be arranged by welding studs on to the mild steel backing. The material can also have plasma-cut holes or inserts for bolts fitted.

The high Chromium alloy has good corrosion resistance, and retains its hard properties up to approximately 600 °C. The superior wear properties of Chromium Carbide plates dramatically reduces plant downtime & maintenance costs.

Performance
Independent tests have shown that Chromium Carbide, under sliding abrasion conditions, can outlast martensitic liner materials by up to 70 times. A realistic average would be 15 to 1 for heat-treated martensitic steels and 30 to 1 coefficient for mild steel. At temperature of up to 600 °C it would outlast mild steel by 25 to 1.

The extreme hardness of the carbide particles make Chromium Carbide plates ideally suitable for applications involving sand, medium sized ore bodies, coal properties of large-scale hardfaced welding at a fraction of the cost of this means of protection. The high chromium content gives Chromium Carbide plates approximately the same corrosive properties as high chromium (14%) steels.

Fabrication
Plasma cutting is recommended for Chromium Carbide plates. KRAM Engineering specializes in the cutting, rolling and fabrication of liners, kits and components for all industries. A few sketches are shown, illustrating some of the fabrication methods for Chromium Carbide plates. Fixing of these plates is particularly simple, due to the easy welding properties of the backing plate. The generally recommended method is stud-welding.

Physical Properties