In the field of car body development voestalpine is currently using roll-formed tube and profile components to permanently improve crash characteristics whilst simultaneously reducing vehicle weight.
Two trends are currently being followed in car body construction: reducing overall car body weight and optimizing crash characteristics. For a long time it was inconceivable that both goals could be combined. However, voestalpine has developed innovative approaches, including the use of roll-formed tube and profile components for key safety and weight-related positions, which demonstrate that such solutions are possible.
Roll-forming is a continuous forming process in which, step by step, strip materials in plate form are repeatedly rolled to achieve the desired cross-section. The profiles can take any required shape and produced with either simple or complex cross-sections. This is a particular advantage in the manufacture of safety-relevant parts, such as front, rear or side collision protection, sills and bumpers etc.
By using ultra high-strength steels such as complex-phase steels in car bodies, it has been possible to significantly reduce overall car body weight. The complex-phase steels have been optimized for bending and are highly ductile (more easily formed at higher strengths). This is a crucial characteristic for use as a structural component. Combining rolled-forms and using steel products especially designed for this task results in new lightweight construction solutions.