Method and device for preparing arc figured steel

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...

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.

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