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Put Air Products' decades of cryo-treating experience to work for you.
Cryotreating
Expert solutions to help you succeed
Air Products can provide liquid nitrogen and supply systems for cryogenic treatment, cryo-tempering, and shrink fitting down to -300°F (-184°C). Cryo-treating with subsequent tempering can improve material properties resulting in stress relief, plus increased toughness and wear resistance. Our cryogenic liquid nitrogen cools metal parts inside treatment chambers to optimize final properties, such as hardness and wear resistance, through transformation of retained austenite into martensite.
Air Products offers a variety of technical services for cryogenic nitrogen treatment processes. Our applications engineers can work with you to understand your cryo-treating, cryo-tempering, and shrink fitting operations to recommend improvements that can help you optimize gas use and improve product quality.
Smart Gas Analyser
Your smart solution for monitoring furnace atmosphere and operations.
- Enhance sustainability in heat treatment processes.
- Measures up to seven gas components in different ranges.
- Equipped with KPI modules for processes like annealing, sintering, hardening, and carburising.
- User-friendly graphical display for easy monitoring.
- Available with closed loop control for real-time adjustment of heat treatment atmospheres.
Industrial Gases from a Global Leader
- Global leading manufacturer of nitrogen, oxygen, and argon
- World leading producer and supplier of hydrogen and helium
- Reliable supply of industrial gases
- Excellent record of meeting on-time needs
- Industry leader in safety
- Technical support when you need it
- World-class customer service
Ask The Expert
Guido Plicht
Commercial Technology Manager - Europe
“Why would I want to cryogenically treat tool steels? Does it really affect the microstructure?”
After austenitizing and quenching, tool steels are sometimes subjected to cold treatment at approximately –80°C (-112°F), followed by tempering. Primarily, the cold treatment is done to increase strength, improve dimensional or microstructure stability, and improve wear resistance. These benefits are due to the transformation of retained austenite to martensite. Some studies show that lowering the cold treatment temperature below –100°C (-148°F) does not significantly increase the amount of retained austenite-to-martensite transformation—therefore, it does not result in additional benefits. However, other studies show that compared to cold treatment (–80°C / -112°F), cryogenic treatment (–190°C / -310°F) further improves wear resistance.
Gases
Air Products gases, typically provided in gaseous and liquid form, enable customers in a wide range of industries to improve their environmental performance, product quality, and productivity.
Nitrogen
Useful as a gas, for its inert properties, and as a liquid for cooling and freezing. Virtually any industry can benefit from its unique properties to improve yields, optimise performance and make operations safer.