High pressure turbine blades are one of the heavily stressed parts in aircraft engines. In order to withstand the high alternating thermal and mechanical stresses, the blades are generated of complex nickel-base super alloys, to some extent containing single crystals. As a result of abrasive effects (e.g. grains of sand penetrate the blade surface) the blade coating and body is damaged and the blades must be replaced. Based on the high cost of a new blade, repairing defects like worn blade tips is economically reasonable. Conventional repair methods for worn blade tips are carried out using manual inert-gas-shielded arc welding processes. In cooperation with Laser Zentrum Hannover e.V. and MTU Maintenance GmbH, a concept for an automatic laser cladding process was developed and industrially implemented. Advantages are good reproducibility in comparison to manual repair, and low thermal influence of the base structure. Furthermore, the high quality of the weld leads to a very high lifetime of blades repaired by MTU Maintenance. In addition, the near-net-shape laser cladding process reduces time and cost needed for refinishing operations.


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    Titel :

    Individual laser cladding for high pressure turbine blades


    Beteiligte:
    Weidlich, N. (Autor:in) / Grüninger, A. (Autor:in) / Meier, O. (Autor:in) / Emiljanow, K. (Autor:in) / Stippler, P. (Autor:in) / Seidel, F. (Autor:in)


    Erscheinungsdatum :

    2008


    Format / Umfang :

    7 Seiten, 5 Bilder, 14 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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