Stamping process is widely used in the fabrication of various sheet-parts for vehicle, airplane, and electronic devices by the merit of low processing cost and high productivity. Among the sheet metal parts, in recent the use of thin sheets having cor...
Stamping process is widely used in the fabrication of various sheet-parts for vehicle, airplane, and electronic devices by the merit of low processing cost and high productivity. Among the sheet metal parts, in recent the use of thin sheets having corrugated structures is rapidly increased with relation to the energy devices; for instance, heat exchanger and fuel cell. However, it is very difficult to make the corrugated structures directly in the stamping process due to their geometrical complexity. To solve this problem, multistep stamping (MSS) process was proposed in this work; sequential lineup as the 1<SUP>st</SUP> stamping, heat treatment, and the 2<SUP>nd</SUP> stamping. By the MSS, we got successful results in the fabrication of very thin corrugated structures which can be applicable to a plate-type heat exchanger.