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ExOne Turns to 3D printed carbon parts in partnership with SGL Group

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A number of major market operators (Desktop Metal, HP, GE and Digital Metals – as well as, to a degree, Stratasys) have recently announced upcoming or upgraded commercial products focusing on the use of metals in binder jetting technology. However, the (Ex)one company that has been providing metal binder for the past decade is now moving further into composite materials with 3D printed carbon.

In particular, ExOne is now working with carbon specialists SLG Group on making carbon ready for the 3D printing market. Beside constantly developing its current product solutions and cultivating growth markets, SGL Group is continuously working on additional future growth areas for carbon and graphite material applications.

The company sees  3D printing of components made of carbon as a very promising area is. SGL Group is bringing carbon and graphite components created using 3D binder jet printing technology provided by ExOne to the market under the brand name CARBOPRINT. (download the brochure).

Collaboration between the companies is founded in expertise from both sides: SGL Group offers extensive knowledge on the raw material and powder preparation, as well as versatile technologies for post-processing carbon components. As the leading supplier of industrial binder jetting technology, ExOne contributes its competences in 3D printing. This technology enables not only the production of small prototypes but also efficient serial production and fast development of customer-specific solutions.

As the carbon body is initially porous after printing, SGL Group post-processing, such as polymer impregnation or silicon or metal infiltration, play a major role. These additional processes allow the adjustment of versatile material properties to the specific application. Initial material properties for carbon 3D printing along with the relevant finishing processes can be found in the SGL Group (download the brochure).

After this initial material development study, it is now time to engineer components and transform the extreme degree of design freedom in 3D printing into real benefits for customers. Thanks to the basic properties of carbon, such as high chemical stability and good electrical and thermal conductivity, first trial components are being developed for testing in applications in the areas of chemical apparatus construction and environmental technology. Concrete examples include heat exchangers and components for distillation columns, as well as pump components made of siliconized 3D printed carbon.

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