Anodizing and cathodizing tool for aluminum alloy shell

Abstract

The invention discloses an anodizing and cathodizing tool for an aluminum alloy shell. The anodizing and cathodizing tool comprises an anodic oxidation assembly and a plurality of cathodic polarization assemblies. The anodic oxidation assembly comprises an anode rod connected with a power supply anode, an upper clamping plate and a lower clamping plate; the multiple cathode polarization assemblies are installed on the upper clamping plate and arranged around the anode rod, each cathode polarization assembly comprises an insulation supporting plate, a cathode rod and a conductive wire, the cathode rods are arranged parallel to the anode rod, the cathode rods are hung on the insulation supporting plate and suspended outside the upper clamping plate, and the cathode rods do not make direct contact with the anodic oxidation assembly; one ends of the conductor wires are connected with the upper ends of the cathode rods, and the other ends of the conductor wires are connected with a power supply cathode; and the aluminum alloy shell sleeves outside the anode rod and all the cathode rods, and is clamped and positioned with the upper clamping plate and the lower clamping plate. According to the anodizing and cathodizing tool anodizing and cathodizing tool, the problem that the quality difference of oxidation film layers on the inner wall face and the outer wall face of the aluminum alloy shell is large is solved, and the thickness and hardness of the oxidation film layers on the inner wall face and the outer wall face of the shell are uniform and consistent.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy oxidation tooling, and in particular relates to an aluminum alloy shell anodic oxidation and cathodic polarization tooling. Background technique [0002] Aluminum alloy is an alloy material widely used in many fields. It has the advantages of low density, high strength, good electrical and thermal conductivity, good processing technology, and easy recycling. However, aluminum alloy itself has low hardness and is easy to be corroded, so it is usually used Anodizing treatment to improve the corrosion resistance, wear resistance and surface hardness of aluminum alloy. Anodizing is an electrochemical oxidation process. Aluminum alloy parts are used as anodes in the corresponding electrolyte, and electrolysis occurs under specific process conditions and applied current, and an oxide film layer is finally formed on the surface of aluminum alloy parts. It can be seen that the quality of the oxide...

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Problems solved by technology

[0004] Aiming at the deficiencies in the related technologies, the present invention provides an anodic oxidation and cathodic polarization tooling for aluminum alloy shells to solve the problem of aluminum alloy shells The problem of the large difference in the quality of the oxide film layer on the inner and outer walls, to achieve uniform thickness and hardness of the oxide film layer on the inner and outer walls of the shell

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