Do you offer anti-oxidation coatings?

Yes. We supply and apply graphited coatings and paints (e.g. GRAFOTERM, GRAFICOAT) that protect graphite and refractory surfaces in furnaces and oxidizing environments, extending component life.

How do you protect refractory channels and surfaces?

With graphited coatings such as GRAFOTERM and GRAFICOAT that reduce slag/metal sticking, provide dry lubrication, and limit oxidation on rotary kiln tracks and refractory channels.

When is the coating applied?

Before the campaign starts, on a clean, fully dry channel. Residual moisture is the most common mistake: when metal enters it generates steam and lifts the film.

Can it be used on graphite launders?

On a graphite launder the material is already non-wetting, so the coating does not add the same benefit. This application targets refractory and metal channels.

Does it reduce cleaning stoppages?

When the problem is adhesion, yes: deposits come away with less effort and the section holds longer. If the section is lost to erosion, the coating is not the solution.

Refractory pouring channel coated with graphite for molten metal transfer

Coatings / Release Agents

Foundry refractory channel lining

Protects gutters subjected to high temperatures in casting processes.

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Launder coating

Also known as: Graphite coating for launders · Casting channel coating · Non-stick launder protection · Coating for molten metal channels

[ Technical summary ]

Launders carrying molten metal accumulate deposits that narrow the section and force cleaning that erodes the refractory. Applying a graphite coating to the channel surface reduces that adhesion: the metal does not wet the film, flow is maintained, and deposits come away easily. It is the specific case of refractory coating applied to launders, where preserving the flow section is what matters.

[ Problem it solves ]

Preserve the flow section of the channel by preventing metal from adhering and forming deposits that force cleaning stoppages and erode the refractory.

Processes

Casting and channeling
Trough coating

Operating conditions

High temperature

When it is suitable

The channel accumulates metal and loses flow section
Cleaning stoppages affect line availability
Mechanical cleaning erodes the channel surface
The channel can be coated before the campaign starts

When it may not be suitable

Section loss comes from flow erosion rather than adhesion
The channel cannot be fully dried before receiving metal
The product cannot be validated in the plant before adopting it in production

Process challenges

Metal sticking
Trough erosion
Stoppages for cleaning

Advantages

Better release
Dry film
Surface protection

Limitations

Not a hydrodynamic oil lubricant
May stain light-colored surfaces
Performance depends on surface preparation and reapplication

[ Critical selection variables ]

These variables define the grade and the geometry. Actual values are confirmed against the grade datasheet.

Molten metal or alloy in contactDecisive
Operating temperatureDecisive
Flow rate and flow regimeDecisive
Application methodRelevant
Substrate or surface to be treatedRelevant
Reapplication frequencyRelevant

[ Required material properties ]

Properties that guide selection. Numerical values come from each grade's datasheet.

Critical properties

Lubricating film formation
Thermal stability
Particle size distribution
Non-wetting by molten metal

Secondary properties

Chemical resistance
Dispersibility

[ Related ]

[ Frequently asked questions ]

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Technical content reviewed by ESGRAF — Last reviewed: September 8, 2026

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