What is Ferritic Nitrocarburizing?

Nitrocarburizing is a case hardening process, similar to nitriding, involving the introduction of nitrogen and carbon into a solid ferrous alloy by holding below the lower critical temperature (Ac1) in contact with a suitable nitrogenous and carbonaceous material. A thin nitrogen and carbon enriched layer, possibly with accompanying carbonitrides and nitrides is produced. The compound layer (or white layer) with an underlying diffusion zone contains dissolved nitrogen and iron (alloy) nitrides. Quenching is not required to produce a hard case. 

Other common names and related subjects are: case hardening, ferritic nitrocarburizing (FNC) and austentic nitrocarburizing (ANC) the latter two designations referring to temperature below or slightly above the lower critical temperature.*

Gasbarre specializes in the design and manufacture of custom-engineered ferritic nitrocarburizing furnaces specific to the thermal processing industry.

Gasbarre furnaces are:

Gasbarre’s complete line of Ferritic Nitrocarburizing Furnaces is listed below.

High Efficiency Box

This Gasbarre IFS furnace is available in numerous sizes and configurations and can be used for numerous processes in air or atmosphere configurations.

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Integral Quench Furnaces

The Gasbarre integral quench furnace is designed for batch processing for many different heat treating applications making it one of the most flexible pieces of equipment in the industry.

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Nitriding & FNC Batch

The vacuum-purge gas nitriding system is a batch-type unit designed for nitriding and ferritic nitrocarburizing processes. 

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Gasbarre Pit Furnaces are available in numerous sizes and configurations, with features and options customized to your unique needs.

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Tip Up

Gasbarre IFS Tip Up Furnaces are ideal for processing large, heavy workloads.

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*Source: Daniel H. Herring, “The Heat Treat Doctor.” The HERRING GROUP, Inc.

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