MOBILITY GOES ADDITIVE 3D PRINTED PART APPROVED FOR USE ON TRAINS
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An additively manufactured brake suspension link for trains has been given its first-ever approval for use by Mobility goes Additive (MGA), a German-based network accelerating 3D printing in the transportation sector. It is currently in use at Hamburger Hochbahn and is a heavily loaded component that functions within a train's brake unit.
The authorization was accomplished by the Approval working group of the MGA network. In addition to its members Deutsche Bahn and the Fraunhofer IAPT and IGCV facilities, it is led by Siemens Mobility. Hamburger Hochbahn, Knorr-Bremse, Photon AG, SBB Cargo, and TüV SüD Product Service are additional members of the group.
3D-Printed Railroad Components
In 2017, the MGA Approval working group started developing the 3D-printed brake suspension link. Following a jointly developed approval concept, TüV SüD successfully tested and evaluated the component's suitability for real-world use. It received operational approval from the Hamburg Technical Supervisory Authority, which resulted in its commissioning in August 2019.
The approval of the 3D printed part involved BOStrab, which is in charge of the German Federal Regulations on the development and operation of light rail transit systems. In order to expand the use of 3D printed components and spare parts in the railway industry, BOStrab will create a standard for future approvals as a result of this project.
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Moving Towards Additive
German railroad company Deutsche Bahn expanded its partnership with Berlin-based 3D printing software developer 3YOURMIND earlier this year as part of MGA to create a "digital spare parts warehouse." GEFERTEC's 3DMP metal additive manufacturing technology was also incorporated by the business to increase the accessibility of difficult-to-find spare parts.
A Memorandum of Understanding (MoU) was also signed by government-owned Swedish railroad SJ, Austrian Federal Railways (BB), Trenitalia, and Deutsche Bahn on behalf of seven European railroads. This led to a commitment to work together in the Mobility goes Additive network's working group RAILiability.