핫스템핑 공정시 소재의 두께 변화에 따른 냉각채널 설계

Recently, ultra high strength products can be manufactured by the hot stamping process in automotive industry. In the hot stamping process, cooling rate of quenching process is key factor to get the high strength, which is closely related to the design of cooling system such as the diameter, the position and the arrangement of the cooling channels. In this study, the quenching process was analyzed including phase trasnformation by finite element analysis(FEA) and the developed FE procedure was applied to the optimization of new cooling channel design with different gage thickness.