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Method and device for preparing arc figured steel

A special-shaped steel and arc-shaped technology, which is applied in the fields of metallurgical technology and material science, can solve the problems that it is difficult to prepare curved special-shaped steel, reduce the yield of curved special-shaped steel products, and crack, so as to increase corrosion resistance and mechanical properties , weaken cracking behavior, and reduce production costs

Active Publication Date: 2017-07-21
GUIZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As for the arc-shaped special-shaped steel used in the production of arched tops in special fields such as tunnels and bridges, generally the special-shaped steel is directly cold-formed to obtain curved I-beams. Cracking is easy to occur in the medium, which significantly reduces the yield of curved special-shaped steel products
At present, welded products are generally used instead of cold-formed steel, so it is difficult to prepare qualified arc-shaped special-shaped steel for tunnels and bridges and other fields by cold-formed process.

Method used

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  • Method and device for preparing arc figured steel

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Embodiment

[0029] see figure 1 , the present embodiment provides a device for preparing arc-shaped special-shaped steel, including a conveying roller 1 for conveying the original special-shaped steel, and a shot blasting machine 2, a hot-dip coating pool 3, and a heat treatment furnace are sequentially arranged on the conveying path of the original special-shaped steel 4. The surface strengthening device 5 and the cold bending machine 6, the heat treatment furnace 4 is correspondingly provided with a magnetic field generator 7, and the magnetic field generator 7 acts on the heat treatment area of ​​the heat treatment furnace 4, and the hot-dip coating pool 3 is correspondingly provided with an electromagnetic oscillation device 8 , the shot blasting machine 2 and the heat treatment furnace 4 are respectively arranged on opposite sides of the hot-dip coating pool 3, and the opposite sides of the hot-dip coating pool 3 are provided with electromagnetic sealing valves 9, and the heat treatme...

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Abstract

The invention provides a method and device for preparing arc figured steel. An aluminum plating layer containing microelements such as rare earth is plated on the surface of the figured steel in an immersion manner, and an interface between the aluminum plating layer and the figured steel is alloyed through heat treatment under a magnetic field; then an obtained figured steel surface is subjected to shot blasting strengthening treatment; and then the figured steel obtained through surface strengthening treatment is directly subjected to cold roll forming, and arc joint steel used in special fields such as tunnel bridges is obtained. By means of the method and device for preparing the arc figured steel, the figured steel surface and immersion plating liquid can be in sufficient contact through electromagnetic stirring, meanwhile, the immersion plating liquid can be evenly distributed to prevent segregation, then the figured steel with the aluminum plating layer is subjected to heat treatment under the magnetic field, and due to the fact that a hot dip coating is formed on the surface and the shot blasting strengthening treatment is conducted, the good-mechanical-performance arc figured steel used in the special fields such as tunnel bridges is obtained. By means of the method and device for preparing the arc figured steel, operation is simple, the cost is low, the yield is high, and the good-mechanical-performance arc figured steel used in the special fields such as tunnel bridges can be continuously prepared. The method and device for preparing the arc figured steel belong to the field of metallurgy technology and material science.

Description

technical field [0001] The invention relates to a method and a device for preparing arc-shaped I-beams for special fields such as tunnels and bridges. It belongs to the field of metallurgical technology and material science. Background technique [0002] Special-shaped steel, especially I-shaped steel, is widely used in construction, tunnels, bridges and other fields, and the market prospect is very good. The arc-shaped special-shaped steel used in the production of arched tops in special fields such as tunnels and bridges generally adopts the cold-bending process directly to obtain curved I-beams for special-shaped steels. Cracking is easy to occur in the medium, which significantly reduces the yield of curved special-shaped steel products. At present, welded products are generally used instead of cold-formed steel, so it is difficult to prepare qualified arc-shaped special-shaped steel for tunnels and bridges and other fields by cold-formed process. Therefore, it is sti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/12C21D7/06C21D1/09B21D5/00
CPCC21D1/09C21D7/06C23C2/12B21D5/00Y02P10/20
Inventor 龙琼伍玉娇黄芳路坊海凌敏周登凤罗咏梅罗勋李杨
Owner GUIZHOU INST OF TECH
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