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Method for producing metal cylinder, method for producing substrate for electrophotographic photoreceptor, method for manufacturing electrophotographic photoreceptor, and metal slug for impact pressing
Method for producing metal cylinder, method for producing substrate for electrophotographic photoreceptor, method for manufacturing electrophotographic photoreceptor, and metal slug for impact pressing
A method for producing a metal cylinder includes preparing a metal slug having a surface adjusted so that the crystal grain diameter at a depth of 10 μm from the surface is smaller than that at a depth of 100 μm from the surface, and the crystal grain diameter at a depth of 10 μm from the surface is 30 μm or more and 120 μm or less; and forming a cylinder by impact pressing of the metal slug having the surface as a bottom.
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