Three years ago, Metal AM magazine published a widely read article on the use of Laser Beam Powder Bed Fusion (PBF-LB) technology for precious metal jewellery production. Today, the continuing rise of sinter-based AM technologies promises to open up the jewellery sector yet further, with new opportunities for both mass-market production as well as bespoke pieces. Chiara Armbruster, Sonja Kappler, Carlo Burkhardt, Gerald Mitteramskogler and Apollinaria Frydmann offer an overview of this new generation of solutions and the state of the technology. A number of application examples are also presented.
... Read more »
Additive Manufacturing processes offer a high degree of design freedom. The Laser Beam Powder Bed Fusion of metals (PBF-LB/M), in particular, has established itself for series applications of complex-shaped parts in numerous industries. In this article, Prof Dr-Ing Christian Seidel considers the next major step in PBF-LB, which could offer designers unknown potential: the production of sensor-integrated AM parts. Methods and solutions for the manufacturing of sensor-integrated AM parts are presented and industry-relevant case studies showcased, illustrating the potential offered by sensor-integrated ‘smart parts.’
... Read more »
In the men’s track cycling team pursuit qualifying at the 2020 Olympics, broadcast live to a global audience, a handlebar part produced by metal Additive Manufacturing failed with catastrophic consequences for the rider, Australia’s Alex Porter. Six months later, a forensic analysis of the incident was published as a 170-page report. The good news is that the company that made the AM part, along with the technology itself, were cleared of blame. So: what went wrong, and what lessons can be learned? Robin Weston digs into the details. [First published in Metal AM Vol. 8 No. 2, Summer 2022]
... Read more »
Designs not driven by requirements increase the risk of an incomplete solution. This relatively simple statement gets to the heart of how designers need to be approaching AM, particularly when balancing the ‘design freedoms’ offered by the technology with the reality of viable and profitable production. Through an exploration of the ubiquitous AM bottle opener, John Barnes, Jennifer Coyne and Chelsea Cummings, The Barnes Global Advisors, and Jon Meyer, APWorks, explore how, by focusing on requirements, a data-driven approach ensures fully functional designs that deliver on multiple requirements for the lowest cost. [First published in Metal AM Vol. 7 No. 1, Spring 2022]
... Read more »
The ability to ‘design out’ distortion during sintering is seen as key to enabling the faster commercialisation of metal Binder Jetting (BJT). The Simufact Additive software platform, now on the third release of its BJT sintering module, is able to accurately simulate the sintering process, predicting shrinkage, slumping and friction-related distortion, either with or without ‘live’ and ‘ceramic’ setters, resulting in a downloadable ‘compensated’ component geometry to be fed directly to the AM machine. In this article, Jeff Robertson explores through case studies how The ExOne Company has been using the software in its AM adoption and R&D centres to optimise customer parts for sintering. [First published in Metal AM Vol. 6 No. 3, Autumn 2021]
... Read more »
Support structures have been there for us since the beginning of AM, anchoring us to a firm foundation and taking the heat when things get intense. But they also bring with them baggage that is now holding us back, blocking channels and taking up valuable time and materials. Is it time to break free? In this article, Jennifer Coyne and John Barnes, of The Barnes Global Advisors, explore our journey so far with support structures, their advantages and disadvantages, and consider the opportunities and impact of the shift towards ‘support free’ strategies. Through three case studies, cost and productivity of conventional and ‘support free’ production are compared. [First published in Metal AM Vol. 6 No. 3, Autumn 2021]
... Read more »
The uptake of Additive Manufacturing by industry, believes Autodesk’s Paul Sohi, has been both stratospherically high and confusingly low. In explaining and addressing this dichotomy, Sohi explores the multiple potentials of AM when approached by taking a more holistic view of design challenges. Whilst there is no doubt that the popularisation of AM technology is influencing how we design products by shifting the design language to embrace more complex or nonstandard forms, Sohi believes that this is where the application of AM seems to be stagnating. So, how can we close the loop from design to manufacturing? [First published in Metal AM Vol. 7 No. 2, Summer 2021]
... Read more »
Metal Additive Manufacturing technologies offer the potential for true mass customisation, but in order to leverage this opportunity, new, complex workflows and business models have to be implemented. In this article, Siemens Digital Industries Software’s Ashley Eckhoff considers the challenges when addressing the topic, from the addition of further complexity, to an already challenging Additive Manufacturing workflow, to traceability and regulation. By adapting the AM process to meet these needs, companies can reap the benefits of new markets uniquely suited to this technology. [First published in Metal AM Vol. 7 No. 2, Summer 2021]
... Read more »
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]
... Read more »
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]
... Read more »
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]
... Read more »
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]
... Read more »
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]
... Read more »
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.
... Read more »
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.
... Read more »
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.
... Read more »
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]
... Read more »
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]
... Read more »
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.
... Read more »
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]
... Read more »
Join 40,000+ other AM professionals – follow us online