Anti-corrosion treatment method for exotic metal structures of maglev steel rails

A technology for anti-corrosion treatment and dissimilar metals, applied in tracks, roads, buildings, etc., can solve the problems of high cost of insulating glue, complicated construction process, colloid aging, etc., and achieve the effect of prolonging service life, simple process and shortening construction period.

Active Publication Date: 2013-06-05
LAIWU IRON & STEEL GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the problems of high cost, complex construction process and colloidal aging of insulating glue, it is not an ideal solution for the anticorrosion design of medium and low speed maglev rails.

Method used

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  • Anti-corrosion treatment method for exotic metal structures of maglev steel rails
  • Anti-corrosion treatment method for exotic metal structures of maglev steel rails

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1. A method for anti-corrosion treatment of a magnetic levitation rail heterogeneous structure, the method comprising the following steps:

[0036] (1) Clean the surface of the aluminum alloy profile 6 and the surface of the F-shaped steel guide rail 1 to remove the attachments, rust and oxide layer on the surface;

[0037] Use a high-pressure gas spray gun to spray and clean the surface of the aluminum alloy profile 6 to remove the attachments on the surface of the aluminum alloy profile 6. The pressure of the spray gun is controlled at 0.6-0.9MPa; the surface treatment quality of the aluminum alloy profile 6 is dry, dust-free, grease-free, No dirt, no attachments; the compressed air from the high-pressure gas spray gun is dry and clean, and the relative humidity is less than 20%;

[0038] Perform sandblasting treatment on the F-shaped steel guide rail 1 to remove the rust, scale and other attachments on the surface of the F-shaped steel guide rail 1; the su...

Embodiment 2

[0045] A method for anti-corrosion treatment of magnetic levitation rail heterogeneous metal structures, as in Example 1, the difference is that the coating method of the surface of the aluminum alloy profile 6 and the surface of the F-shaped steel guide rail 1 adopts a roller coating method, which is at 5 to 10 ° C, 45 The surface of the aluminum alloy profile 6 and the surface of the F-shaped steel guide rail 1 are coated in a coating environment with a relative humidity of ~60%.

Embodiment 3

[0047] A method for anticorrosion treatment of a magnetic levitation rail dissimilar metal structure, as in Example 1, except that the dry film thickness of the HD4001 aluminum-rich paint coating on the surface of the aluminum alloy profile 6 is controlled at 90-100 μm. After the two coatings, the dry film thickness of the HDX6000 zinc-based coating on the surface of the F-shaped steel guide rail 1 is controlled at 140-160 μm.

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Abstract

The invention relates to an anti-corrosion treatment method for exotic metal structures of maglev steel rails. The anti-corrosion treatment method includes steps of cleaning attachments, rust and oxide layers on the surfaces of aluminum alloy profiles and F-shaped steel guide rails; coating aluminum-rich coatings on the surfaces, contacting with the F-shaped steel guide rails, of the aluminum alloy profiles, and coating zinc-based plated coatings on the surfaces, contacting with the aluminum alloy profiles, of the F-shaped steel guide rails; and fitting the aluminum alloy profiles and the F-shaped steel guide rails with H-shaped steel rail sleepers according to the prior art after coatings are coated. Two protective layers of the aluminum-rich coating layer/zinc-based plated coating layer are formed between the aluminum alloy profile and the F-shaped steel guide rails, so that galvanic corrosion between the aluminum alloy profiles and the F-shaped steel guide rails are prevented, corrosion resistance of the maglev steel rails is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to an anti-corrosion treatment method between different metals, in particular to an anti-corrosion treatment method suitable for medium and low-speed magnetic levitation rails with different metal structures, and belongs to the technical field of metal anti-corrosion treatment. Background technique [0002] The track of medium and low-speed maglev trains is different from ordinary rails. It uses F-shaped steel guide rails. The rail row processing, installation accuracy and track alignment directly affect the train's running stability. The medium and low-speed magnetic levitation rails are directly rolled and formed by steel mills, and the supporting rail assembly has solved a major problem for my country's low-speed magnetic levitation rail transit projects. The medium and low speed maglev rails are generally composed of F-shaped steel guide rails, H-shaped steel sleepers and aluminum alloy profiles; the connection is completed by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B25/30E01B19/00
Inventor 张思勋韩长智王中学聂鑫郭秀辉孔令坤
Owner LAIWU IRON & STEEL GRP
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