Method for blacking case of mobile phone

A mobile phone shell, blackening technology, applied in the direction of superimposed layer plating, metal material coating process, coating, etc., can solve the problems of poor hardness and anti-scratch performance, harmful to human body, easy to fade, etc., to achieve enhanced durability Grinding performance and service life, strong bonding effect

Inactive Publication Date: 2009-01-07
高鸿镀膜科技(浙江)有限公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for preparing a mobile phone shell black, which can effectively solve the problem that the electrochemical treatment of the existing mobile phone shell is harmful to the human body, and the electrophoretic treatment covers the metallic luster of the mobile phone shell. And poor scratch resistance, easy to fade, affect the appearance of the problem

Method used

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  • Method for blacking case of mobile phone

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Embodiment Construction

[0028] A method for preparing a mobile phone shell blackened according to the present invention comprises the following steps: using a stainless steel stamping shell 1 with a surface state of 2B or BA, polishing or drawing the shell 1 to enhance the brightness of the surface of the shell 1; Or the shell 1 after wire drawing is placed in the ultrasonic cleaning line, and the surface of the shell 1 is decontaminated, degreased and cleaned; the shell 1 is loaded into the vacuum furnace body, and the vacuum degree reaches 6×10 -3 ~7×10 -3 Finally, use a high-voltage power supply of 600-1000V to bombard shell 1 with argon ions to remove the oxide layer on the surface of shell 1; use ion plating to deposit a layer of pure metal layer 2 on the surface of shell 1, such as figure 1 As shown, the pure metal layer 2 adopts titanium or chromium to improve the bonding force of subsequent coatings; the intermediate transition layer 3 is deposited on the pure metal layer 2 by using the magne...

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Abstract

The invention discloses a manufacturing method for blackening mobile phone shell. The manufacturing method comprises the procedures as follows: a stainless punch forming shell is adopted; the shell is polished or wiredrawn; the shell is placed on an ultrasonic clean line to be cleaned; the shell is placed in a vacuum furnace; high voltage source is used for argon-ion bombardment for the shell; an Ion plating method is used for depositing a pure metal layer on the surface of the shell; a magnetron sputtering method is used for depositing a middle transition layer on the bottom layer of the pure metal; the magnetron sputtering method is used for coating a hard black film on the middle transition layer; the shell is passivated and cooled; and a static protective film is stuck on the shell for package. The manufacturing method has the characteristics of green environmental protection and energy saving. The tone range of a black nano film is that L is equal to 35 to 39, a is equal to -0.3 or 0.5 and b is equal to 0 to 3. The manufacturing method also has strong bonding capacity which can be over 8H under the loading below 1000g, so the wear-resisting property and the service life of the stainless cell phone casing are greatly improved.

Description

technical field [0001] The invention relates to a preparation method for blackening mobile phone shells used in daily life. Background technique [0002] With its excellent anti-corrosion performance, metal texture, and green environmental protection, stainless steel is becoming the first choice for metal materials for middle and high-end mobile phone casings. At present, electrochemical treatment or electrophoretic treatment is mostly used for the coloring treatment of stainless steel mobile phone shells. Because the reaction solution of electrochemical treatment generally contains hexavalent chromium which is harmful to human body, it does not meet the EU RoSH standard; the decorative film of electrophoretic treatment is mostly organic. , not only covers the metallic luster of the stainless steel mobile phone case, greatly reducing the aesthetics, but also because its hardness is only 2H, the anti-scratch performance is poor, so that the mobile phone case is easy to fade i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00
Inventor 许向阳王骏钟德全徐胜
Owner 高鸿镀膜科技(浙江)有限公司
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