Warm working method for stainless steel foil and mold for warm working

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United States of America Patent

PATENT NO 9802238
SERIAL NO

14431665

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Abstract

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An austenitic stainless steel foil 2 with a thickness equal to or less than 300 μm is disposed to face a punch 12, and the stainless steel foil 2 is subjected to drawing in a state in which an annular region 2a of the stainless steel foil 2 that is in contact with a shoulder portion 12d of the punch 12 is set to a temperature up to 30° C. and an external region 2b outside the annular region 2a is set to a temperature of from 40° C. to 100° C.

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Patent Owner(s)

Patent OwnerAddress
NISSHIN STEEL CO LTDCHIYODA-KU TOKYO 100-8366

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miura, Norimasa Osaka, JP 22 56
Norita, Katsunari Osaka, JP 17 30

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