Steel bridge corrosion prevention technology

A technology of steel bridge and technology, applied in the field of steel bridge anti-corrosion, can solve the problems of the development of steel bridges that are easy to rust, and achieve the effects of improving the degree of industrialization, long anti-corrosion time, and good anti-corrosion effect.

Inactive Publication Date: 2016-02-17
RENQIU YONGJI CONSTR & INSTALLATION ENG
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AI Technical Summary

Problems solved by technology

However, the shortcoming of steel bridges being easy to rust seriously restricts the development of steel bridges. The survey results show that the annual loss caused by metal corrosion in my country is about 4% of the gross national product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: Carefully remove the rust and oil stains on the surface of the steel bridge components to expose the metallic luster on the surface, then roughen the components, then immerse the components in a chromium-free passivation solution for electroplating for 30 seconds, take them out and let them stand in the air for 30 seconds , and then immerse the component in a chromium-free passivation solution for electroplating for 30 seconds, take it out and dry it at 40°C-70°C. At this time, the entire surface of the component has been electroplated with a layer of zinc, and the overall anti-corrosion treatment is completed. Connect the components by welding or other methods, remove the oil stains at the joints, reveal the metallic luster, and then roughen them, then melt the zinc wires that are continuously sent out with an acetylene-oxygen flame, and blow them on the surface of the joints with compressed air , Finally, the capillary pores are closed with anti-rust pain...

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PUM

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Abstract

The invention relates to the technical field of steel corrosion prevention and discloses a steel bridge corrosion prevention technology. Steel bridge components, chromium-free passivating fluid and antirust paint are included. The corrosion prevention technology comprises two steps, namely the overall corrosion prevention treatment and connection position corrosion prevention treatment; component overall corrosion prevention treatment is conducted before the components are connected, and after a steel bridge is connected, connection position corrosion prevention treatment is conducted; the component overall corrosion prevention treatment adopts the chromium-free passivating fluid electrogalvanizing method, and two times of electrogalvanizing treatment are conducted after dirt on the surface is cleaned up; the connection position corrosion prevention treatment adopts the thermal zinc spraying method, molten zinc is blown and adsorbed to the surface of the connection position after the dirt on the surface of the connection position is cleaned up, and pores are closed through the antirust paint. The steel bridge corrosion prevention technology is good in corrosion prevention effect, long in corrosion prevention time and high in industrial degree.

Description

technical field [0001] The invention relates to the field of iron and steel anticorrosion technology, in particular to a steel bridge anticorrosion technology. Background technique [0002] With the acceleration of urban development, the role of urban bridges is becoming more and more prominent. Among them, steel bridges are widely used due to their high strength, light weight, good plasticity and toughness, strong bearing capacity, long service time and short construction period. Attention, more and more urban bridges choose steel bridge design. However, the shortcoming of steel bridges being easy to rust seriously restricts the development of steel bridges. The survey results show that the annual loss caused by metal corrosion in my country is about 4% of the gross national product. In order to ensure the long-term safe use of the steel bridge within the design period, it is particularly important to do a good job of anti-corrosion of the steel bridge. Contents of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/22C23C4/08
Inventor 朱连吉王福至
Owner RENQIU YONGJI CONSTR & INSTALLATION ENG
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