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Abstract: Through the electromagnetic free forming of aluminum sheet,
it is found that the sheet metals of different thickness have different
deforming depth when they are in the same process condition, and in the
experiment condition, for the materials of the same performance, the
deforming depth of the thick sheet is larger than that of the thin
sheet. This phenomenon is analyzed, and it is thought that it should be
attributed to the reason that different thickness can lead to different
equipment energy utility efficiency, and the most essential reason is
skin effect. In the condition of same equipment energy, if the sheet
thickness is smaller than the shin depth, then the deforming depth
increases as the sheet thickness increases, and if the sheet thickness
is larger than the shin depth, the deforming depth decreases as the
sheet thickness increases. Also the method of how to get a maximal
equipment energy utility efficiency is analyzed, the relation of
equipment capacitance and inductance of discharge circuit is achieved.
The research content is important for the process design of
electromagnetic forming.
Key words: Electromagnetic forming Deforming depth Skin effect
Energy utility efficiency
CLC No: TG391
北京市先进制造技术实验室开放课题基金资助项目.
Received 20020812, received in revised form 20021202
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