Short-process production method for corrosion resisting structure steel

Abstract

The invention belongs to the technical field of a corrosion resisting steel production method, and particularly relates to a short-process production method for corrosion resisting structure steel. The method comprises the following steps that firstly, a corrosion-resisting steel shell is manufactured; secondly, molten steel is injected into the corrosion-resisting steel shell manufactured in thefirst step, and after integral solidification, a composite casting blank is formed; and thirdly, the composite casting blank manufactured in the second step is rolled. The ordinary carbon steel is lowin price, but the corrosion resisting performance is not ideal; and the corrosion resisting steel has a good corrosion resisting effect, but the manufacturing cost is high. The ordinary carbon steeland corrosion-resisting steel combining manner is adopted in the short-process production method, the carbon steel serves as a base material, the corrosion-resisting steel grade serves as the shell, and the effect of corrosion resisting is achieved accordingly.

Description

technical field [0001] The invention belongs to the technical field of production methods of corrosion-resistant steel, and in particular relates to a short-process production method of steel for corrosion-resistant structures. Background technique [0002] Mechanism steel represented by H-shaped steel has good mechanical and physical properties, firmness, energy saving and environmental protection, and is widely used in industries, buildings, bridges, oil drilling platforms, etc. However, in areas with severe acid rain and severe corrosion such as oceans, surface anti-corrosion treatment must be carried out in order to prolong the service life of structural steel. [0003] At present, my country's steel anti-corrosion treatment methods mainly have the following problems: (1) For coating anti-corrosion, the durability of the coating is poor, and it needs to be repaired after a certain period of time; (2) For coating anti-corrosion, the coating material For non-ferrous metals...

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Problems solved by technology

[0003] At present, my country's steel anti-corrosion treatment methods mainly have the following problems: (1) For coating anti-corrosion, the durability of the coating is poor, and it needs to be repaired after a certain period of time; (2) For coating anti-corrosion, the coating material For non-ferrous metals, although the problem of poor durability has been solved, the price is relatively expensive and uneconomical; (3) For self-corrosion, atmospheric corrosion-resistant steel is used as the main body, such as weathering steel, although it has rust resistance, corrosion resistance, life extension, and reduction It has the characteristics of thin consumption, labor saving, energy saving, etc., but its price is relatively expensive, and its research is in its infancy worldwide, and needs to be further developed and promoted; (4) The anticorrosion method that uses cathodic protection to achieve anticorrosion purposes It will consume a lot of power during the implementation process, which will cause a lot of waste for the entire system

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