Production method of steel for corrosion-resistant structure

Abstract

The invention belongs to the technical field of corrosion-resistant steel production, and particularly relates to a production method of steel for a corrosion-resistant structure. The production method comprises the following steps that S1, composite blanks are manufactured, wherein the core steel is sleeved with the tubular steel blanks to prepare the composite blanks; S2, the composite blanks obtained in the step 1 undergo rolling combining; S3, vacuum treatment is carried out on the combined composite blank; and S4, the composite blank subjected to the vacuum treatment is rolled again. Common carbon steel is low in price, but the common carbon steel is not ideal in corrosion resistance, the corrosion-resistant steel has good corrosion resistance, but the corrosion-resistant steel is expensive in manufacturing cost, so that by adopting a mode of combining the common carbon steel and the corrosion-resistant steel, the corrosion-resistant effect can be achieved, and moreover, the production cost can be reduced; the carbon steel is used as the core steel (the base material), a corrosion-resistant steel type (the tubular steel blank) is used as a shell, the two parts are connected bymeans of extrusion and other means, and then are vacuumized to be in a vacuum state, the two ends are welded, the base material and the shell are combined into a whole by means of rolling and other means after heating, and compounding of the structural steel is realized through rolling after heating again.

Description

technical field [0001] The invention belongs to the technical field of corrosion-resistant steel production, and in particular relates to a production method of corrosion-resistant structural steel. 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, the shortcomings of my country's steel anti-corrosion treatment methods mainly include: (1) For coating anti-corrosion, the durability of the coating is poor, and maintenance needs to be carried out after a certain period of time; (2) For coating anti-corrosion, the coating material For non-ferrous metals, although the pr...

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Problems solved by technology

[0003] At present, the shortcomings of my country's steel anti-corrosion treatment methods mainly include: (1) For coating anti-corrosion, the durability of the coating is poor, and maintenance needs to be carried out 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

In view of the imperfect anti-corrosion treatment methods of steel and the unsatisfactory anti-corrosion effect after treatment, there is an urgent need for a steel anti-corrosion measure that can effectively solve the problems of poor durability, high price, and energy consumption.

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