ALNAT NSolutions for gas nitriding and nitrocarburisingof metals

www.airliquide.com

The gas nitriding heat treatment of low alloy steels, carbon steels andcast irons is performed under ALNAT N Nitrogen-Ammonia-NitrousOxide or Carbon Dioxide atmospheres with major benefits:

• Excellent wear of the nitrided layer• Increased productivity thanks to a highly reactive atmosphere• Adjustable nitriding potential with a high speed of treatment• Upgrade of your process performance• Easy implementation on conventional atmosphere furnaces• Minimal capital expenses and maintenance• Furnace safety management with Nitrogen

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• ALNAT Expertise to qualify the performance of your furnaces• ALNAT Control to monitor the nitrogen potential• ALNAT Performance:

• Complete process control to optimize the quality and flow-rate of theatmosphere delivered to your furnaces

• On-line atmosphere analysis (H2/NH3)• Telemetry for remote monitoring and reporting

A high quality atmosphere

Adapted to high specifications nitriding process

Customized installation

Extended ALNAT offers

04/08 - Expert Graphic - Photo credits: S. Braun, Air Liquide, Multigas - ALNAT is a trademark of the Air Liquide Group.

Based on the accurate mixing of high purity nitrogen and ammonia with or withoutnitrous oxide or carbon dioxide, ALNAT N gives a constant atmosphere’scomposition and produces reproducible results on parts.Nitrous Oxide or Carbon Dioxide acts as an activator of the nitriding reaction. This process has quick kinetics and an adjustable nitriding potential.

• ALNAT N favors monophase nitride layers with less brittleness and better adherence than conventionnal gas nitriding

• For nitriding and nitrocarburising at 520°C-570°C• In pit-, pot-, batch-type furnaces and pusher type furnaces• Nitrogen atmosphere purge for furnace safety

• Engineered and designed to your specific needs• ALNAT N panel supply for multi-furnace or single furnace• Dedicated ammonia technology with regulated flow-rates• Quick installation and easy start-up• Preventive and corrective Air Liquide maintenance• Consulting and training on gas handling and safety• Automatic nitrogen safety pipeline and procedures

ALNAT N

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