Wire Arc Additive Manufacturing
Expert solutions to help you succeed
The primary function of the shielding gas in additive manufacturing is to protect molten and heated metal from the damaging effects of the surrounding air and to provide suitable conditions for the arc during the printing process. The shielding gases protect the print area from atmospheric gases, such as oxygen, nitrogen, carbon dioxide, and water vapor. All shielding gases are available in a range of convenient and cost effective gas supply options. Helium and argon are most commonly used.
Helium has unique shielding gas properties for high speed, high power laser printing/welding, including high ionization potential, producing excellent plasma suppression and high weld/print speeds.
Argon acts as an economic shielding gas that, like helium, does not oxidize and has no effect on the chemical composition of the metals, even in their molten state. Nitrogen, an even more economic alternative, does not oxidize but reacts with certain metals at elevated temperatures.
Our Air Products technical team has extensive applications knowledge in surface/bulk treatment of metals to help additive manufacturers optimize the gas selection, supply mode, and purity for improved part processing.
Optimizing Industrial Gases in 3D Metal Printing
Solutions and Expertise for 3D Printing
- Optimized part treatment via proper gas selection and purity
- Uniform printing as a result of maintaining consistent conditions
- Improved control over chamber management and post-printing heat treatment
- Lower production costs via reliable and cost efficient gas supply
- Easy installation
- Increased safety
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Industrial Gas Audits and Leak Detection Services
Compressed argon gas and liquid argon in a variety of purities and in various modes of supply around the world thanks to our network of storage and transfill facilities.
An inert gas for cryogenic, heat transfer, shielding, leak detection, analytical and lifting applications
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, optimize performance and make operations safer.