The availability of highly energy efficient car body structures recently has become one of the most decisive technological issues with direct impact on competitiveness and, of course, on environmental sustainability. Energy efficiency, however, does not only include the obvious aspect of fuel consumption but also a superior level of passenger safety. In this technological context, new types of thermo-mechanically coupled process routes in sheet metal forming appeared on the technological scene. With these technologies, better known as press hardening, hot stamping or form fixture hardening, parts with highest geometrical complexity and, at the same time, ultra high strength can be produced. Unfortunately, ductility and, therefore, the ability to transform impact energy into a controlled plastic deformation of the car body structure are limited. Coming from that, the ongoing trend towards further system consolidation with a significantly higher functional integration on single component level has encouraged the development of several approaches to exceed these limits. Among these approaches, strategies to produce parts with tailored properties constitute doubtlessly the most prominent example. Other important issues are shortening of process chains, robustness of processes, extension of substrate material range, improvement of corrosion resistance and new fields of application. Some of these aspects are highlighted in the paper.
Press hardening - from galvanized UHSS to body-in-white application
Presshärten - vom verzinkten ultrahochfesten Stahl(UHSS) bis zur Anwendung für Karosseriebauteile
2011
8 Seiten, 12 Bilder, 34 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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