In recent years, the automotive industry is making an effort to reduce the vehicle weight for reducing the CO 2 emissions. The hot stamping of high strength steels offers the possibility to obtain significant reduction of weight. The conventional door impact structure design is composed of one or two tubes and two brackets by stamping. There are many advantages if conventional design was changed to hot stamping design such as cost saving, tools amount and weight reduction. The development of door impact beam by hot stamping is illustrated in this paper. It includes the product design, process evaluation, die design, CAE simulation, and prototype manufacturing. Finally it uses hardness test, thinning rate analysis, and quasi-static three-point bending test to check the hot stamping parts performance, including mechanical properties, plastic deformation capacity and absorbing energy ability. It could be a reference for automotive industry to develop the similar products.
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