Linde Focuses on Atmosphere Control at AMPM 2017

  • Presentation to address influence of gas choice and purity on AM production

Bridgewater, N.J., U.S., June 9, 2017 – At the fourth annual Additive Manufacturing with Powder Metallurgy (AMPM) conference, a Linde-based university researcher will present results showing the effects of different atmospheric gases on parts built from 316L powder during laser powder-bed fusion production. Linde LLC will also showcase the ADDvanceTM O2 precision atmosphere control unit used in the research and designed for additive manufacturing (AM) applications at booth #320.

The conference, June 13-15, is co-located with PowderMet 2017 at the Bellagio Hotel in Las Vegas. AMPM will feature worldwide industry experts presenting the latest developments in the fast-growing field of metal AM processes. Linde is a global leader in the production of industrial gases for AM processes, metal heat treatment and powder metallurgy.

The presentation is scheduled for Thursday, June 15 at 11:15 a.m. in Room Renoir 2:

“Nitrogen Atmosphere Effect on 316L Parts Built by Laser Powder Bed Fusion Process”
Camille Pauzon, Ph.D. candidate at Chalmers University of Technology, Göteborg, Sweden, will present research comparing the properties of parts built from 316L powder during Direct Metal Laser Sintering (DMLS) in atmospheres of nitrogen and argon gases at different purity levels. Atmosphere control is vital to ensuring precise AM fabrication, particularly in DMLS processing. The results will show the effects the choice of gas and its quality on the bulk chemical composition, microstructure and resulting mechanical properties of the final machined part.

The presentation was co-authored by Pierre Forêt, Applications Technology Manager, Linde AG, in conjunction with Pauzon and Professors Eduard Hryha and Lars Nyborg of the Chalmers University of Technology. Pauzon is participating in an 18-month research stay at Linde Gas, Unterschleissheim, Germany, where she studies the effects of gas mixtures for powder bed fusion systems.

The ADDvance O2 atmosphere control unit provides unparalleled oxygen (O2) level control for AM production by constantly analyzing the powder chamber atmosphere. The unit detects O2 concentrations and the relevant oxidation potential, and automatically initiates the required amount of purging to maintain the desired atmosphere purity for consistent, high-quality output.

Linde LLC offers a portfolio of solutions for the ferrous and non-ferrous metallurgy industries, ranging from gases and equipment to services and process consulting for additive manufacturing, powder metallurgy, combustion, heat treatment and cooling. For more information, attend the AMPM 2017 presentation, June 15 at 11:15 a.m., visit Linde at booth #320, or contact Linde (, 800-755-9277.

About Linde LLC in North America
Linde LLC is a member of The Linde Group. In the 2016 financial year, The Linde Group generated revenue of USD 17.9 bn (EUR 16.948 bn), making it one of the leading gases and engineering companies in the world, with approximately 60,000 employees working in more than 100 countries worldwide. The strategy of The Linde Group is geared towards long-term profitable growth and focuses on the expansion of its international business, with forward-looking products and services. Linde acts responsibly towards its shareholders, business partners, employees, society and the environment in every one of its business areas, regions and locations across the globe. The company is committed to technologies and products that unite the goals of customer value and sustainable development.

Source Linde LLC In North America

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