| 摘要 |
PROBLEM TO BE SOLVED: To provide a copper or copper alloy sheet strip which can prevent discoloration and corrosion and improve press productivity, by applying an organic compound rust preventive treatment on the copper or copper alloy sheet strip which prevents accumulation of green powder on a wiping pad during the press forming. SOLUTION: The copper or copper alloy sheet strip is coated with the organic compound rust preventive film on its surface, which reacts to the copper and generates carboxylate. The base material, copper or copper alloy sheet strip, is made to have a half-band width of 0.2μm or more in a histogram obtained by 3-dimensional surface roughness measurement. The variation in size of irregularity on the surface of the copper or copper alloy sheet strip is suppressed and abrasion or wear between the surface of copper or copper alloy sheet strip and the wiping pad is reduced so that the accumulation of the green powder on the wiping pad is prevented. COPYRIGHT: (C)2006,JPO&NCIPI
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