direkt zum Inhalt springen

direkt zum Hauptnavigationsmenü

Sie sind hier

TU Berlin

Page Content

Additive Manufacturing and Jet Technologies

Additive Manufacturing

In its beginnings, Additive Manufacturing (AM) was solely used for prototype construction. The continuous improvements of machining systems as well as the advancements in powder characterization of novel materials led to a constant increase of possibilities for industrial application. Despite their numerous advantages such as the possibility to manufacture high complex parts with inner contours or light weight structures the current deficits in reproducibility and productivity of AM processes limit their economical use. These challenges are in the scope of fundamental research projects at the IWF. The following AM technologies are in focus of our work:

    • Selective Laser Melting (SLM)
    • Selective Laser Sintering (SLS)
    • Laser Powder Deposition (LMD)
    • Fused Deposition Modeling (FDM)

    Workpiece to determine the production limits (SLM), PTC Berlin made of Polymer (SLS)
    Lupe

    The current research topics in the field of Additive Manufacturing are:

    • Fundamentals of SLM processes
    • Material qualification
    • System development
    • Process chain qualification
    • Additive process chain combination
    • Digital integrated production

    Jet Technologies

    Due to their process inherent advantages jet technologies are used in a wide variety of industrial applications such as cleaning of sensitive surfaces, removal of functional layers and cutting of hard to machine materials (fiber-reinforced composites, titanium alloys etc.). The following robot guided jet technologies (with and without abrasives) are in the scope of research at the IWF to expand their industrial use:

    • High pressure jetting (water, liquid CO2)
    • Compressed air blasting (dry ice, CO2-snow, shot-peening)

     

    3D-AWJ machining system, AWJ-Turning, waterjet cleaning/decoating, CO2-cleaning
    Lupe

    The current research topics in the field of Jet Technologies are:

    • Abrasive waterjet controlled-depth-milling
    • Abrasive waterjet turning
    • High pressure liquid CO2-cutting
    • Surface pre-treatment
    • Cleaning and decoating

    Through the close cooperation with the Fraunhofer-Institute for Production Systems and Design Technology IPK the results of fundamental research can quickly and effectively be applied to industrial application. Further information can be found here

    Research projects

    Current research projects
    Project title
    Funding sponsor
    Project information
    Shot peening of gears using water jet technology
    FVA
    Link
    From prototype to series production of SLM components with simultaneous reduction of the processing costs
    AiF
    Link
    Investigation of the combined process chain based on SLM and LMD
    DFG
    Link
    Pre-contouring of hard to machine materials using abrasive waterjets
    DFG
    Link
    Development and manufacturing of optimized working coil windings for electromagnetic forming employing additive manufacturing techniques
    DFG
    Link
    Grooving and trepanning of titanium aluminides using abrasive waterjets
    DFG
    Link
    In Situ diffraction at Selective Laser Melting
    DFG
    Link
    Completed research projects
    Project title
    Funding sponsor
    Project information
    Blasting with solid carbon dioxide as a pretreatment process prior to glass coating
    AiF
    Link
    Liquid CO2 as a blasting media for cutting process
    DFG
    Link
    LCD material recycling
    AiF
    Link
    Blasting with carbon dioxide as a pretreatment process prior to electroplating
    DFG
    Link

    Selected publications

    Year
    Author
    Title
    Link
    2017
    Uhlmann, E.;
    John, P.

    Advancements of the manufacturing technology with high-pressure liquid CO2 jets. In: Proceedings of the 2017 WJTA-IMCA Conference and Expo in New Orleans, USA. Hrsg.: WJTA®-IMCA®, 2017.
    Link
    2017
    Uhlmann, E.;
    Fleck, C.;
    Gerlitzky, G.;
    Faltin, F.
    Dynamical fatigue behavior of additive manufactured products for a fundamental life cycle approach. Procedia CIRP, Volume 61, 2017, Pages 588-593, ISSN 2212-8271.
    Link
    2017
    Uhlmann, E.;
    Krohmer, E.;
    Hohlstein, F.;
    Reimers, W.
    DEVELOPMENT OF AN EXPERIMENTAL TEST SETUP FOR IN SITU STRAIN EVALUATION DURING SELECTIVE LASER MELTING. Proceedings of the 28th Annual International Solid Freeform Fabrication Symposium. PP 1472 - 1480. 2017.
    Link
    2016
    Uhlmann, E;
    Tekkaya, A.;
    Kashevko, V.;
    Gies, S.;
    Reimann, R.;
    John, P.
    Qualification of CuCr1Zr for the SLM Process. 7th International Conference on High Speed Forming, April 27th-28th 2016, Dortmund, Germany.
    Link
    2016
    Uhlmann, E.;
    Bilz, M.;
    Mankiewicz, J.;
    Motschmann, S.;
    John, P.
    Machining of hygroscopic materials by high-pressure CO2 jet cutting. Procedia CIRP 23 (2016).
    Link
    2015
    Uhlmann, E.;
    John, P.;
    Kashevko, V.;
    Gerlitzky, G.;
    Bergmann, A.
    Quality optimized Additive Manufacturing through Measuring System Analysis. Proceedings of ASPE Spring Topical Meeting 2015.
    Link
    2015
    Faltin, F.;
    Flögel, K.;
    Uhlmann, E.
    3D NEAR NET SHAPING OF HARD TO MACHINE MATERIALS VIA ABRASIVE WATERJET CONTROLLED-DEPTH MILLING. 2015 WJTA-IMCA Conference and Expo, November 2-4, New Orleans, USA.
    Link
    2014
    Baira, M.;
    Kretzschmar, M;
    Hollan, R.;
    Heitmüller, F.;
    Uhlmann, E.
    Dry Ice Blasting as a Pre-Treatment Process for Electroplating. WGP Jahreskongress 2014, Advanced Materials Research, Vol. 1018, pp. 123-130, 2014.
    Link
    2013
    Flögel, K.;
    Faltin, F.
    Waterjet turning of titanium alloys. WGP Jahreskongress 2013. Nürnberg, Deutschland. 22./23.07.2013.
    Link
    2012
    Uhlmann, E.;
    Flögel, K.;
    Faltin F.;
    Kretzschmar, M.
    Abrasive waterjet turning of high performance materials. Procedia CIRP - Fifth CIRP Conference on High Performance Cutting. 2012; 1:409-413
    Link

    Dissertations

    Year
    Author
    Title
    ISBN
    2018
    Bergmann, André
    Vorgehensweise zur Auslegung des Laserstrahlschmelzens am Beispiel von Wolframkarbid-Kobalt
    978-3-8396-1430-3
    2017
    Faltin, Fabian
    Endkonturnahe Schruppbearbeitung von Titanaluminid mittels Wasserabrasivstrahlen mit kontrollierter Schnitttiefe
    978-3-8396-1309-2
    2017
    Baira, El Mustapha
    Trockeneisstrahlen als Vorbehandlungsverfahren vor dem Galvanisieren
    978-3-8396-1157-9
    2016
    Kretzschmar, Michael
    CO2-Schneeentstehung und deren Wirkung auf die Effekte beim CO2-Schneestrahlen
    978-3-8396-1065-7
    2016
    Motschmann, Simon
    Einfluss von Herstellungs- und Lagerungsfaktoren auf die Eigenschaften von Trockeneispellets und das Strahlergebnis
    978-3-8396-1014-5
    2015
    König-Urban, Kamilla
    Additive Fertigung von Nickelbasis-Superlegierungen mittels Laserstrahlschmelzen am Beispiel von Diamalloy 4004NS
    978-3-8396-0978-1
    2014
    Bilz, Martin
    Möglichkeiten und Grenzen des Strahlspanens mittels CO2-Hochdruckstrahlen
    978-3-8396-0661-2
    2013
    Huynh, Quang Ut
    Einfluss der Oberflächenstrukturierung und -texturierung eines Kunststoffsubstrats auf die Anhaftung von Zellen
    978-3-8396-0631-5
    2009
    El Mernissi, Adil
    Beeinflussung des Vorbehandlungszustandes der Substratrandzone durch Trockeneisstrahlen am Beispiel von Klebeverbindungen
    978-3-8167-7980-3
    2008
    Krieg, Mark
    Analyse der Effekte beim Trockeneisstrahlen
    978-3-8167-7625-3

    Zusatzinformationen / Extras

    Quick Access:

    Schnellnavigation zur Seite über Nummerneingabe

    Auxiliary Functions

    Contact

    Erwin Krohmer, M. Sc.
    Tel.: +49 30 314-23293
    Room PTZ 219