Method for manufacturing bumper arrangement of motor vehicle by shaping plate to bumper crossbeam, involves making availability of plate from heat-treatable steel with different wall thicknesses and material characteristics

摘要

The method involves making availability of a plate from heat-treatable steel with different wall thicknesses and material characteristics. The plate is shaped to a bumper arrangement (1). The middle section (4) is annealed during shaping the plate. The plate is welded to a tailored welded blank. The steel plate is shaped in such a way that the wall thicknesses and material characteristics at the middle section deviates from the wall thicknesses and material characteristics at the connection section (3).