Chromium carbide is a compound that is composed of various
combinations of chromium and carbon. Its outstanding strength, its ability to
retain that strength under even high - temperature exposure, and its ability to
resist corrosion render it an ideal additive material in the steel industry.
When steel plating (or any other metal alloy) is overlaid with it, it becomes
extremely hard and durable.
These advantages add up to chromium carbide enjoying a wide
range of applications and uses, including the surface treatment of steel
components. Steel plates that are overlaid with it "are meant to be welded
onto existing plate structures or machinery in order to improve
performance," Wikipedia explains.
Materials World, the member magazine of the Institute of
Materials, Minerals and Mining provides a long list of applications. Among them
are the following:
Wear Resistant
Coatings - The hardness of chromium carbide helps it to protect parts that are
coated with it. Two of the advantages of these coatings are that they are
inexpensive and easily applied via welding or thermal spraying. Cutting tools
are just one of the items that are formed with chromium carbide overlay.
Welding Electrodes
- More and more often chromium carbide welding electrodes are taking the place
of outdated carbon - containing electrodes. That is because they produce better
and more consistent results. They also provide a wear - resistant layer to the
electrode, up to 250% superior to the earlier carbon - containing electrode,
and result in less variation between welds. The application in which the
electrodes are most often seen is the "hardfacing of conveyor screws, fuel
mixer blades, pump impellers." They are also found in more general
applications where "erosive abrasion resistance is required."
Thermal Spray
Applications. - Thermal spraying is the process whereby chromium carbide is
applied as a coating to some other metal like steel. As with other
applications, the high corrosion resistance that results from this bonding is
the greatest advantage. In the steel industry, this coating virtually
eliminates rusting. Depending on what substance it is mixed with before it is bonded
to the steel, it can also act as a barrier against high temperatures of up to
700 to 800 degrees Celsius. For this reason, steel that is thermal sprayed with
it is often used in the aerospace industry. Other typical uses are "as
coatings for rod mandrels, hot forming dies, hydraulic valves, machine parts,
and wear protection of aluminum parts."
Chrome Plating
Alternative - More wear resistant than hard chrome plating, steel that is
overlaid with chromium carbide results in a similar surface finish at a much
lower price point. In addition, disposal of chrome plated with the overlay is
much more environmentally friendly.
Cutting Tools -
Toughness and durability are obvious must - haves when it comes to cutting
tools. Chromium carbide improves both of these qualities. Its main advantage as
an additive is that it prevents grain growth during sintering (a form of grain
refinement), thereby rendering the cutting tool ultra hard.For more information about Hardfacing Materials,Thermal Spray Powder China,Cbn Inserts China and Cast Tugnsten Carbide China please visit my website.
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