METHOD FOR WARM WORKING STAINLESS STEEL FOIL AND MOLD FOR WARM WORKING

摘要

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.