ADDITIVE MANUFACTURING component post-processing, powder handling, powder charging”. Initially, Phoenix Contact’s own tool shop was the driving force behind the further development of additive manufacturing. The focus was on subjects such as conformal cooling, which can reduce process times in It was a success, because Protiq was the first company to be able to print copper. The Blomberg-based company then followed suit with zinc and high-strength tool steel, underlining its claim to be one of the flagship companies in additive manufacturing. production, for example, in the plastic injection molding The Internet of Print process. and in the production of forming dies that can As the technology developed, Stefan de Groot’s area be used to print test samples. “But it did not stop there, because a typical feature of Phoenix Contact’s DNA is to look for new processes and new solutions. What can we develop that did not exist before?” At the time, many standard materials were already available, such as the MS1 1.2709 tool steel in the metal laser melting sector, which had already established itself in additive manufacturing. The same applies to the plastics sector, where certain polyamides, such as nylon, are processed using laser sintering. “At some point, we wanted to be able to process conventional series materials, which we have been using for years in our parent company, in additive manufacturing as well. These materials have better, more durable properties. And of course, as an electrical engineering company, we also wanted to make our most important metal, copper, printable”. There’s no such thing as cannot be done “In 2010, when we started, copper was not considered processable in 3D printing. So we developed a process that allowed us to process copper with our machines. We were able to present this in 2013. Market competitors, who now also offer copper prints, started doing this in 2018/19”. Some pride is mixed into de Groot’s description. “This is what makes us fundamentally different from our competitors. We set up specially developed systems for both metal and plastic and started out on a greenfield site. And we asked ourselves what a development and qualification system needs to have to be able to process materials that cannot actually be processed”. To enable them to print materials that previously seemed unsuitable for this purpose, Protiq’s experts began to take a close look at their properties and, above all, the available aggregate states. To be able to actually print wafer-thin layers and fuse them with the laser, the layer to be applied must also be wafer-thin. In particular in the powder bed process, which is Protiq’s specialty, the material must have a specific moisture content and be homogeneous. The pourability that is to be achieved in this way is a real challenge, especially in the plastics sector. “We carried out truly fundamental research together with major material manufacturers”, says Stefan de Groot, describing the efforts. of responsibility also changed. “I became Technology Manager, so I was responsible for process and material development and was heavily involved in project support for customers”. At the end of 2017, the digital channel was extended to become a true sales channel, the Protiq Marketplace. A big step for all customers who wanted to → “The actual development work is first of all in the material, and only then in the fine-tuning of the system”. De Groot is a specialist and knows his way around 3D printing The Phoenix Contact innovation magazine UPDATE 3/23 19