A kind of aluminum base tube for photosensitive drum with bright and smooth surface and its manufacturing method

Abstract

The invention discloses an aluminum-based tube having a bright and smooth surface and used for a photosensitive drum and a manufacturing method of the aluminum-based tube. The aluminum-based tube is prepared from the following alloy elements in percentage by mass: 1.40-1.45% of Mn, 0.02-0.06% of Si, 0.40-0.44% of Fe, 0.13-0.19% of Cu, 0.006-0.010% of Mg, less than or equal to 0.01% of other impurities and the balance of Al. The manufacturing method comprisesextruding and drawing procedures, wherein a used extrusion mold consists of an upper extrusion mold and a lower extrusion mold, a high-strength YG8N wearing resisting alloy ring which is embedded into an inner hole of a lower mold base (6) is used as a lower mold fixed diameter working belt (5), a used inner pull mold consists of an inner mold round steel body and a pull core, an inner mold deformation vertebra angle is set to be 15-25 degrees, an outer mold compression deformation vertebra angle of 40-80 degrees is formed in the feeding part of the outer pull mold, and the working part of the outer pull mold is made of a YG8N tungsten alloy. The aluminum-based tube disclosed by the invention does not need cutting processing and can be directly used in later anode oxidation and coating production.

Description

technical field [0001] The invention relates to an aluminum base tube for a photosensitive drum and a manufacturing method thereof, which is suitable for the aluminum base tube of the photosensitive drum of electrophotographic devices such as printers, copiers, and facsimile machines. Background technique [0002] Aluminum-based tubes have been used as photosensitive drums for electrophotographic devices such as copiers, printers, and fax machines for a long time. Now almost all photosensitive drums are made of aluminum-based tubes. The surface quality required by the photosensitive drum is very strict. In order to ensure the printing quality, the surface of the photosensitive drum is almost mirror-like, and there should be no fine line defects, let alone pinholes, pits and other defects, otherwise the image of the final product will be affected. quality. In order to achieve this condition, for a long time, after the aluminum-based tube billet has been extruded and drawn, t...

AI Technical Summary

Problems solved by technology

Adopting this method can improve the smoothness of the surface of the aluminum tube used for the photosensitive drum substrate to a certain extent, but the surface roughness is still high, and the brightness and smoothness of the surface of the aluminum tube are difficult to adapt to high-precision printers, copiers, fax machines and other electronic equipment. camera device requirements

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