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SMS Group and Additive Industries Team Up for Industrial AM Serial Production

3D printing technology for metallic materials has made huge strides forward in recent years. To help this manufacturing process break through into serial production, Additive Industries and SMS group have agreed to develop and jointly market a production system for additive manufacturing on an industrial scale.

In joining forces, Additive Industries and SMS group bring with them specialist expertise in both core additive manufacturing technologies: the manufacture of metal powder and 3D printing. The industrial-scale, serial production of parts of high reproducible quality by the additive manufacturing method is possible only if both crucial process stages are closely aligned. The production concept will not just encompass powder manufacturing and 3D printing but other stages, too, right up to delivery of the finished component. “The entire process is designed for maximum productivity, with the result that additive manufacturing can finally enjoy competitive success in serial production,” says Guido Kleinschmidt, Member of the Managing Board of SMS group.

“As one of the world’s leading machine and plant builders for the metallurgical industry, we have extensive design know-how and process engineering expertise in the field of vacuum melting plants. We are now transferring this expertise to powder production plants,” explains Norbert Gober, Vice President Research and Development at SMS group. Daan A.J. Kersten, CEO of Additive Industries, adds: “Five years ago, we started with the development of the world’s first 3D metal printer for high-end production applications. Today, with our MetalFAB1, we are accelerating industrial additive manufacturing as one of the industry’s leading technology suppliers. In SMS group we have found a partner who has experience in planning production complexes such as these and delivering them on a turnkey basis.”

The process starting point is the manufacture of powder. To ensure maximum purity, the alloys are induction-melted under vacuum in the crucible. The liquid metal is atomized using pure argon in an oxygen-free atmosphere. “The quality of the powder manufactured is crucial for the quality of the finished product. To enable us to make faster progress in powder production, we are building an industrial-scale pilot system, which is scheduled to go live at the end of the year,” says Markus Hüllen, Vice President 3D Competence Center at SMS group.

The powder manufacturing process is followed directly by 3D printing. In the integrated MetalFAB1 system, the metal powder bed fusion process is applied to melt the powder in a reproducible and efficient way. After additively manufacturing the parts, the build plate with parts is automatically transported to the heat treatment furnace for a stress relief cycle before storage by a robot. The MetalFAB1 system is designed to run autonomously 24/7 without the need for multiple shifts, substantially reducing cost.

SMS group is also responsible for the heat treatment of the printed components for setting of improved material characteristics. Within the group, SMS Elotherm is the company with the induction heat treatment expertise, and one of the markets it supplies these machines to is the automotive industry. After the components have been machined and undergone quality control checks, they are ready to be shipped.

The first visible sign of this collaboration will be the Democenter, which is to be set up at SMS’s facility in Mönchengladbach in the next few months. Additive Industries will supply a MetalFAB1 printer, on which the powder produced by the plant is processed, and this will be installed right next to the pilot unit to work fully integrated.

Norbert Gober: “This Democenter will allow us to align the powder plant with its process guidance system perfectly with the printer and its parameters. We will then be able to apply this practical experience on an industrial scale and offer this as a turnkey solution to high-end users.”

SMS group is a group of companies internationally active in plant construction and mechanical engineering for the steel and nonferrous metals industry. It has some 13,500 employees who generate worldwide sales of more than EUR 3 billion. The sole owner of the holding company SMS GmbH is the Familie Weiss Foundation.

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