Application of a new sheet stampting-forging hybrid technology in the forming of flying wheel panel of car

Many structural parts with hollow shape and big-thickness-difference are manufactured by casting or welding method.Considering requirement of light-weight of structural parts,authors prompt a new hybrid plastic forming technology,stamping-forging process,to make these types of sheet metal and/or tube parts.The spatial shape of part is formed by stamping process,and storing enough metal in the required area at the same time.Subsequent forging process compresses this area to increase the wall thickness.As an example,the manufacturing process of flying wheel of car was studied.The results show that the utilization ratio of material,working efficiency and the quality of specimen are improved obviously.At the same time,the requirement on forming equipment is lowered.