Anticorrosion magnesium alloy communication equipment and preparation method thereof

A technology of communication equipment and magnesium alloy, which is applied in the direction of metal casing, metal material coating process, anodic oxidation, etc., can solve the problems of magnesium alloy communication equipment corrosion, etc., and achieve the effect of solving crevice corrosion

Active Publication Date: 2015-11-25
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides anti-corrosion magnesium alloy communic...

Method used

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  • Anticorrosion magnesium alloy communication equipment and preparation method thereof
  • Anticorrosion magnesium alloy communication equipment and preparation method thereof
  • Anticorrosion magnesium alloy communication equipment and preparation method thereof

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preparation example Construction

[0148] In the fourth aspect, the fourth aspect of the embodiment of the present invention provides a method for preparing an anti-corrosion magnesium alloy communication device. The communication device uses a magnesium alloy casting as a shell, including the following steps:

[0149] The shell is immersed in a chemical solution to undergo an oxidation reaction to complete the chemical conversion process to form a chemical conversion film, that is, a surface pretreatment layer. The chemical solution contains manganate, zirconate, or phytate, or rare earth metal salts, or molybdates, or tungstates, or silicates; or

[0150] Anodizing or micro-arc oxidation treatment is applied to the shell, and after forming a magnesium oxide film on the surface of the shell, mechanical processing or etching is used to destroy a local area of ​​the magnesium oxide film to form a porous Structure, exposing the base material of the shell to obtain a porous magnesium oxide film, that is, a surface...

Embodiment 1

[0177] An anti-corrosion magnesium alloy communication equipment, such as figure 1 As shown, the magnesium alloy casting is used as the casing 10, and the casing 10 includes an upper casing 101 and a lower casing 102 that abut against each other. 102 forms a slit S1 at the abutment.

[0178] The preparation method of the above-mentioned communication equipment comprises the following steps:

[0179] Place the magnesium alloy shell in a phosphate-containing solution, and apply an external voltage of 80V for anodization to form a magnesium-containing oxide film, and then use etching to destroy the local area of ​​the magnesium-containing oxide film to form a porous structure of magnesium-containing oxide film. Membrane (surface pretreatment layer), exposing part of the substrate of the shell (eg figure 2 shown), figure 2 Among them, 10 is the shell, and H is the hole. In the present embodiment, the exposed base material area of ​​the hole position of the magnesium-containin...

Embodiment 2

[0184] A method for preparing anti-corrosion magnesium alloy communication equipment, comprising the following steps:

[0185] The magnesium alloy shell is placed in a phosphate-containing solution, and the micro-arc oxidation treatment is performed under an external voltage of 480V to form a magnesium-containing oxide film, and the local area of ​​the magnesium-containing oxide film is destroyed by etching to form a porous structure containing Magnesium oxide film (surface pretreatment layer), exposing part of the base material of the housing, in this embodiment, the area of ​​the base material exposed at the hole position of the magnesium oxide film containing the porous structure accounts for 60% of the area of ​​the entire housing surface ; Coating an epoxy polyester coating on the surface of the surface pretreatment layer to obtain an anti-corrosion layer;

[0186] The upper shell and the lower shell are butted against each other, a gap is formed at the abutment, and a se...

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Abstract

Provided is an anti-corrosion magnesium alloy communication device, which uses a magnesium alloy casting as a housing, the surfaces of the housing are provided with a surface pre-treatment layer and at least an anti-corrosive layer; the surface pre-treatment layer is a chemical conversion film or a magnesium-containing oxide film with a porous structure; and the anti-corrosive layer is a coating layer. Also provided is an anti-corrosion magnesium alloy communication device, the housing comprises an upper housing and a lower housing abutting to each other, the gap of the abutting is provided with a sealing joint strip, the sealing joint strip is arranged on the gap and fills the gap. Provided is an anti-corrosion magnesium alloy communication device, the housing is provided with a magnesium alloy body, and a dissimilar metal connecting with the magnesium alloy body, the surfaces of the magnesium alloy body and the dissimilar metal as well as the connection of the two are provided with a sealing layer or a sealing joint strip or a coating layer, the sealing layer or the sealing joint strip or the coating layer is used to isolate the magnesium alloy body from the outside, the dissimilar metal is provided with a exposed conductive part, the conductive part is used to form a grounding connection with the outside. Also provided is a method for preparing an anti-corrosion magnesium alloy communication device.

Description

technical field [0001] The invention relates to the field of magnesium alloy communication equipment, in particular to an anti-corrosion magnesium alloy communication equipment and a preparation method thereof. Background technique [0002] Magnesium alloys have good application prospects in the field of communication equipment due to their low melting point, light weight, and good impact resistance. However, due to the low electrode potential of magnesium, this characteristic makes magnesium and its alloys easy to corrode. Therefore, The application of magnesium and its alloys is greatly limited. Contents of the invention [0003] In view of this, an embodiment of the present invention provides an anti-corrosion magnesium alloy communication device, which is used to solve the problem of serious corrosion of the magnesium alloy communication device in the prior art in application. [0004] In the first aspect, the embodiment of the present invention provides an anti-corro...

Claims

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Application Information

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IPC IPC(8): H05K5/04C25D11/30C23C22/57C23C22/40
CPCH05K5/04
Inventor 穆君伟曹建岭王华
Owner HUAWEI TECH CO LTD
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