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Method for surface treating metal substrate

a metal substrate and surface treatment technology, applied in vacuum evaporation coatings, coatings, sputtering coatings, etc., can solve problems such as difficulty in treating alloy housings and ncvm processes

Inactive Publication Date: 2010-02-04
SHENZHEN FUTAIHONG PRECISION IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can be difficult to treat alloy housings by the NCVM process because the surface of the housing is usually too smooth.

Method used

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  • Method for surface treating metal substrate
  • Method for surface treating metal substrate

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Embodiment Construction

[0009]What is described below is a method for surface treating a metal substrate. For purposes of illustration and description, an alloy housing of an electronic device is used. However, the exemplary embodiment is not limited to alloy housings, but can also be applied to other metal substrates that need to be processed using NCVM. [0008]

[0010]Referring to the drawing, the method may include the following steps: (S1), providing a metal substrate; (S2), trimming the metal substrate; (S3), anodizing the metal substrate; (S4), treating the metal substrate using NCVM process.

[0011]In step S1, a metal substrate is provided and formed into a housing pre-form by die-casting, punching, or forging. The metal substrate may be magnesium alloy or aluminum alloy.

[0012]In step S2, the housing pre-form is trimmed to form a base housing. Then, the base housing may be degreased using a trichloroethylene solution.

[0013]In step S3, The base housing is anodized to form an anodic coating on an external ...

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Abstract

A method of treating a metal substrate comprise the steps of: anodizing the metal substrate to create pores on the surface of the substrate; and treating the metal substrate by NCVM to form a NCVM coating on the surface of the substrate.

Description

BACKGROUND[0001]1. Technical Field[0002]The disclosure relates to a method for surface treating metal substrates.[0003]2. Description of Related Art[0004]Typically, to improve external appearance and quality of a housing of a portable electronic device, a surface treatment (e.g., Non Conductive Vacuum Metallization, NCVM) can be applied.[0005]However, it can be difficult to treat alloy housings by the NCVM process because the surface of the housing is usually too smooth.[0006]Therefore, there is room for improvement in the art.BRIEF DESCRIPTION OF THE DRAWINGS[0007]Many aspects of the present method for surface treating a metal substrate can be better understood with reference to the following drawings. These drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present method. Moreover, in the drawings like reference numerals designate corresponding parts throughout the several views. Wherever possible, the sa...

Claims

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Application Information

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IPC IPC(8): C25D5/44C25D5/48C25D5/34
CPCC23C14/024C25D11/02C25D5/48C25D5/34
Inventor GAO, DE-FENG
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD