To provide an electromagnetic forming device for a thin sheet where a groove part and a bearing surface part can be simultaneously formed for only one time at high efficiency and with high precision, and to provide a metallic thin sheet for a fluid apparatus.
In the electromagnetic forming device for a thin sheet comprising: a forming coil; a power source means for energizing the forming coil; and a forming die 2 provided with a forming part at least including a bearing surface, where the forming coil is energized from the power source means in a state where a thin sheet is interposed between the forming coil and the forming die 2, so as to generate electromagnetic force, and the thin sheet is pressed against the forming die 2 by the electromagnetic force, and this is formed, the bottom part of the bearing surface 2a in the forming die 2 is disposed with a plurality of chevron projections 11 whose height is equal to the depth of the bearing surface 2a at equal intervals. For example, a plurality of the chevron projections 11 are arranged so as to be a honeycomb shape.
AIZAWA TOMOKATSU
OKAGAWA KEIGO
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