METAL FOIL FOR SPRING MEMBER, PRODUCTION METHOD FOR METAL FOIL FOR SPRING MEMBER, AND SPRING MEMBER FOR ELECTRONIC DEVICE

METAL FOIL FOR SPRING MEMBER, PRODUCTION METHOD FOR METAL FOIL FOR SPRING MEMBER, AND SPRING MEMBER FOR ELECTRONIC DEVICE

A metal foil for a spring member includes a first region on which the spring member is formed. The first region has a square shape with one side being 300 mm. In the first region, an absolute value of a difference value obtained by subtracting a standard deviation of a thickness in a width direction...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Aizawa, Hiroyasu, Kobayashi, Akihiko, SHIMAMURA, Shinichi
Format: Patent
Sprache:eng
Schlagworte:
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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Beschreibung
Zusammenfassung:A metal foil for a spring member includes a first region on which the spring member is formed. The first region has a square shape with one side being 300 mm. In the first region, an absolute value of a difference value obtained by subtracting a standard deviation of a thickness in a width direction orthogonal to a rolling direction from a standard deviation of a thickness in the rolling direction is less than or equal to 0.15 μm.