An unexpected consequence of the COVID-19 pandemic has been its impact on the multibillion dollar semiconductor microchip market: at the very same moment as demand for consumer electronics skyrocketed due to global lockdowns, the supply of semiconductors was bottlenecked by production disruptions. Now, supply chain shortages threaten the production volume of the industries dependent on these parts. Scott Green and Niels Holmstock, 3D Systems, and Lieven Vervecken and Gert-Jan Paulus, Diabatix, explore how metal AM can be used to increase efficiency in semiconductor fabrication and boost the speed at which these vital components can be produced. [First published in Metal AM Vol. 7 No. 2, Summer 2021]
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Heat exchangers have become – excuse the pun – a hot topic in metal Additive Manufacturing. This is an application that can, in one go, leverage advances in equation-driven CAD design software and the capabilities of AM to produce geometries that would be impossible by any other manufacturing process. Olaf Diegel, Wohlers Associates, reports on a project exploring workflows for AM heat exchanger design using design tools from nTopology. [First published in Metal AM Vol. 7 No. 2, Summer 2021]
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It is no secret that metal Additive Manufacturing still faces significant challenges that stand in the way of broader adoption in industry. Aside from AM service providers, very few small- to medium-sized enterprises have brought metal AM in-house; many lack the capabilities, knowledge and resources to do so, even if the will is there. In this article, Olaf Diegel, Noah Mostow and Terry Wohlers discuss the complex, and often multi-faceted, obstacles that stand between AM and its wider global adoption, and how those obstacles can be addressed and resolved in order to clear the path to achieving the technology’s full market potential. [First published in Metal AM Vol. 7 No. 1, Spring 2021]
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The Additive Manufacturing industry in South Africa has come a long way since the installation of the country’s first AM machine in 1991, with a number of research and commercial initiatives driving the development of world-class applications and knowledge. In this article, Terry Wohlers and Olaf Diegel, Wohlers Associates, present an overview of metal Additive Manufacturing activities in South Africa, from the technology’s life-changing use for medical implants to its development for rapid, large-scale part production and beyond. [First published in Metal AM Vol. 6 No. 4, Winter 2020]
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Able to achieve quicker build speeds and lower cost per part than its rival technologies, metal Binder Jetting (BJT) has generated increasing interest and rapid industry investment over the past two years. But while many engineers are now becoming familiar with the principles of design for Powder Bed Fusion AM, design for BJT is less widely understood. In this article, Olaf Diegel and Terry Wohlers attempt to demystify some of the key factors that must be considered when designing parts for BJT. [First published in Metal AM Vol. 6 No. 2, Summer 2020]
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Whilst the principles of Design for Additive Manufacturing (DfAM) may suggest ‘clean-sheet’ components are the best way to reap the benefits of AM technology, many examples of redesigns have brought significant performance and economic benefits. In this article, Ray Huff and Terry Wohlers report on further success at Siemens in the use of AM for gas turbine fuel swirlers, highlighting both the development process and the evolving role of digital data in manufacturing.
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In 2016 SAP and UPS announced their collaboration to develop a supply chain management solution that spans the complete AM process chain, from component evaluation and design to delivery of the final product. Leading US-based AM service provider Linear AMS, a Moog company, is one of several manufacturers involved in the venture. Linear AMS’s Bruce Colter and Moog’s George Small review the drivers behind on-demand manufacturing and present recent developments in materials, applications and component verification.
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The aerospace sector has been a key driver in the commercial development of metal Additive Manufacturing. Whilst some of the major application announcements of recent years can be looked back upon as milestones for the industry, numerous lower profile developments continue to demonstrate how metal AM has the capability to increase efficiency and add value in a multitude of application areas. We review a paper published in the Journal of the Minerals, Metals & Materials Society highlighting the potential for an innovative oil-gas separation rotor for aero-engine applications.
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Additive Manufacturing has been heralded as a game-changing technology of the future. But while many ‘green’ and ecological initiatives have bloomed from the AM movement, the question remains: “Is AM environmentally friendly?” As Olaf Diegel, Ray Huff, and Terry Wohlers explain, the short answer is: it can be, in the hands of good designers and well-informed manufacturers. As with any tool or process, knowledge and experience are key. It is important to explore the many ways AM is applied in sustainable ways and whether it is improving. [First published in Metal AM Vol. 6 No. 1, Spring 2020]
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With its Sapphire machine and Flow build preparation software capable of highly-controlled, virtually support-free Additive Manufacturing, Velo3D is pushing the limits of what is possible with Laser Powder Bed Fusion (L-PBF). Since launching its first machine in 2018, the California-based company has seen success with a range of highly complex parts which would challenge even the most experienced AM engineer. In this article, Zach Murphree, Velo3D’s Vice President of Technical Partnerships, explains the key factors which set the company’s process apart from the wider AM market. [First published in Metal AM Vol. 5 No. 3, Autumn 2019]
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With the right training and experience, a design engineer can quickly make an informed decision on whether a production part might be suitable for Additive Manufacturing. For the rest of us, some basic rules can be applied to understand if a product is a good fit. Here, Ray Huff and Terry Wohlers outline six questions that should be asked before going down the AM route for series production, and present a selection of successful real-world application examples that illustrate the issues raised.
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Sweden’s VBN Components AB has successfully combined the design freedoms offered by Additive Manufacturing with innovative process and material developments to create a new generation of high-strength, carbide-rich tool materials. These unique, patented alloys are transforming tool and wear component performance across a range of applications, from gear cutting hobs to food processing and the mining sector. Isabelle Bodén reports on the company’s development and the unique properties of its products. [First published in Metal AM Vol. 5 No. 2, Summer 2019]
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