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Foundry

Post Treatment

Air Products offers a variety of gas-based solutions and a full line of industrial gases—including nitrogen, hydrogen and various gas blends to assist with the heat treatment of castings. Our applications engineers can work with you to evaluate your process requirements and recommend improvements that can help you optimize gas use and improve product quality.

Other Applications

Product NameDescription/BenefitsDownloads
Gases

Annealing Gas Atmospheres

Gas atmospheres for annealing can range from nitrogen-based blends with hydrogen for carbon steels (to improve microstructure, surface appearance and reduce residual stresses), to 100% hydrogen (for stainless steels or for faster batch processing of carbon steel components). For vacuum annealing of reactive metals, we can provide argon or helium atmospheres. Our atmospheres can help you achieve improved and consistent part quality, reduced post-heat-treatment cleaning or pickling costs and reduced furnace maintenance.

Gas atmospheres for annealing can range from nitrogen-based blends with hydrogen for carbon steels (to improve microstructure, surface appearance and reduce residual stresses), to 100% hydrogen (for stainless steels or for faster batch processing of carbon steel components). For vacuum annealing of reactive metals, we can provide argon or helium atmospheres. Our atmospheres can help you achieve improved and consistent part quality, reduced post-heat-treatment cleaning or pickling costs and reduced furnace maintenance.

Nitrogen

In some instances, liquid nitrogen is used to post-treat castings at very low temperatures to convert retained austenite and enhance metallurgical properties.  Our applications engineers can provide the necessary technical support to enable cost-effective cryogenic treatment.

In some instances, liquid nitrogen is used to post-treat castings at very low temperatures to convert retained austenite and enhance metallurgical properties.  Our applications engineers can provide the necessary technical support to enable cost-effective cryogenic treatment.

Equipment

Oxy-fuel Systems

View our combustion website. We offer a variety of oxy-fuel burner systems designed for specific heating operations downstream of the melt shop (e.g. flame hardening). Our technical specialists can recommend a system to best meet your specific needs.

View our combustion website. We offer a variety of oxy-fuel burner systems designed for specific heating operations downstream of the melt shop (e.g. flame hardening). Our technical specialists can recommend a system to best meet your specific needs.

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