Further weight saving goals have prompted the automotive industry to design lighter car body structures in order to reduce fuel consumption, while maintaining the high safety standards for occupants. Body structures developed with large portions of closed profiles have a so-called 'profile intensive design'. Particularly in the case of large scale production, it is necessary to have cost effective manufacturing methods. Therefore, production and processing require short process chains as well as the latest techniques. New forming technologies, combined with laser-beam welding and hydroforming processes is one strategy to save costs. A further way to shorten the process chain is the joining and combining of process steps at first and then later fitting the tailored tubes with the new features. The result of these efforts led to a new category of tubular products the so called '3rd generation Thyssen Tailored Tubes (3rd TTT)'. These nearly finished parts are manufactured by a new forming technology the so called 'Thyssen Tube Curling Process'. This technique permits the direct forming from flat blanks into welded longitudinal beams, for example from the NewSteelBody car, without a hydroforming step, all within a single machine. The paper points out a further forming method with similar results. Compared to processes like roll or roller forming in combination with hydroforming, these new methods cause only minimal plastic strains. The paper shows some parts, manufactured by these methods. The pre-bending of Thyssen Tailored Tubes is also a newly developed process. Because of a change in cross-sections during the actual bending process, no standard tube bending method could be used. Therefore, we utilized a modified rotary draw bending process using specially developed tools. A workpiece example of a bent conical is shown. This method also needs a tubular bending machine with specialized features. Together with the Swiss company MEWAG AG, ThyssenKrupp Stahl has developed and constructed this equipment.


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    Titel :

    Third generation of Thyssen Tailored Tubes - a new category of tubular products


    Weitere Titelangaben:

    Dritte Generation von Thyssen Tailored Tubes - eine neue Kategorie von Rohrprodukten


    Beteiligte:


    Erscheinungsdatum :

    2005


    Format / Umfang :

    12 Seiten, 14 Bilder, 8 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch







    Anlagentechnik und Anwendungen für Tailored Blanks und Thyssen-Engineered Blanks

    Prange, W. / Stegemann-Auhage, T. / Wonneberger, I. et al. | Tema Archiv | 1999


    Vergleichende Betrachtungen zur Auslegung von Tailored Blanks unf Thyssen Engineered Blank

    Wonneberger, I. / Prange, W. / Stegemann, T. et al. | Tema Archiv | 1998