Improvement of formability for fabricating thin continuously corrugated structures in sheet metal forming process

A stamping process is widely used for fabricating various sheet metal parts for vehicles, airplanes, and electronic devices by the merit of low processing cost and high productivity. Recently, the use of thin sheets with a corrugated structure for sheet metal parts has rapidly increased for use in e...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2012, 26(8), , pp.2397-2403
Main Authors: Choi, Sung-Woo, Park, Sang Hu, Jeong, Ho-Seung, Cho, JongRae, Park, Seonghun, Ha, Man Yeong
Format: Article
Language:English
Subjects:
Applied sciences
Automotive components
Control
Corrugated sheet
Corrugating
Devices using thermal energy
Dynamical Systems
Energy
Energy. Thermal use of fuels
Engineering
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Formability
Forming
Fuel cells
Heat exchangers
Heat exchangers (included heat transformers, condensers, cooling towers)
Heat treatment
Industrial and Production Engineering
Mechanical Engineering
Metals. Metallurgy
Other forming methods
Press forming of metal foils and wires
Production techniques
Sheet metal
Stamping
Vibration
기계공학
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Summary:A stamping process is widely used for fabricating various sheet metal parts for vehicles, airplanes, and electronic devices by the merit of low processing cost and high productivity. Recently, the use of thin sheets with a corrugated structure for sheet metal parts has rapidly increased for use in energy management devices, such as heat exchangers, separators in fuel cells, and many others. However, it is not easy to make thin corrugated structures directly using a single-step stamping process due to their geometrical complexity and very thin thickness. To solve this problem, a multi-step stamping (MSS) process that includes a heat treatment process to improve formability is proposed in this work: the sequential process is the initial stamping, heat treatment, and final shaping. By the proposed method, we achieved successful results in fabricating thin corrugated structures with an average thickness of 75 μm and increased formability of about 31% compared to the single-step stamping process. Such structures can be used in a plate-type heat exchanger requiring low weight and a compact shape.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-012-0616-z