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Aeronautics
Air Liquide in the value chain

Inert gas blanketing (SPAL)

We supply industrial gases for clean melting processes and casting applications. Air Liquide’s patented EGAL process uses liquid cryogenics, i.e. argon or nitrogen, to reduce interactions between molten metal and atmospheric gases such as oxygen, nitrogen and water vapor during air melting operations. This SPAL technology allows steel manufacturers to producing castings with fewer defects, enhanced mechanical properties and lower rejects.

Air Liquide offers SPAL, Air Liquide’s technology family of inert blanketing processes. These patented processes include EGAL, SBAL and VRAL.

Gases