Corrosion-resistant steel bar and its production process

Abstract

The invention discloses a corrosion-resistant steel bar and a production process thereof. The corrosion-resistant steel bar includes a corrosion-resistant steel bar body, a corrosion-resistant steel bar longitudinal rib, a corrosion-resistant steel bar transverse rib and a steel bar anti-corrosion layer, and the upper and lower sides of the corrosion-resistant steel bar body are arranged symmetrically. Corrosion-resistant steel longitudinal ribs, two corrosion-resistant steel longitudinal ribs and two corrosion-resistant steel longitudinal ribs are symmetrically arranged with multiple corrosion-resistant steel transverse ribs at equidistant intervals. The surface is provided with an anti-corrosion layer of steel bars, the corrosion-resistant steel bar body, the longitudinal ribs of corrosion-resistant steel bars, and the transverse ribs of corrosion-resistant steel bars are made of the first group of corrosion-resistant steel bars, and the anti-corrosion layer of steel bars is made of the second group of corrosion-resistant steel bars. In this application, the corrosion-resistant steel bar has the advantages of double-layer anti-corrosion, double protection, production line operation, high manufacturing efficiency, and wide application range.

Description

technical field [0001] The invention relates to the technical field of corrosion-resistant steel bars, in particular to a corrosion-resistant steel bar and a production process thereof. Background technique [0002] The invention relates to the technical field of corrosion-resistant steel bars, in particular to a corrosion-resistant steel bar and its production process. Generally, the steel bars used can form an alkaline environment in the concrete enclosure, and the steel bars will not corrode at this time, but As the service time increases, the concrete suffers from carbonization, chloride ion erosion and other damage processes, and gradually loses its protective effect on the steel bars, and the corrosion of the steel bars slowly begins to occur. In the general atmospheric environment, the above corrosion process is very slow, and the service of reinforced concrete The life span can reach 50-70 years. [0003] In the existing technology, such as Figure 1-3 In the founda...

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Problems solved by technology

[0002] The invention relates to the technical field of corrosion-resistant steel bars, in particular to a corrosion-resistant steel bar and its production process. Generally, the steel bars used can form an alkaline environment in the concrete enclosure, and the steel bars will not corrode at this time, but As the service time increases, the concrete suffers from carbonization, chloride ion erosion and other damage processes, and gradually loses its protective effect on the steel bars, and the corrosion of the steel bars slowly begins to occur. In the general atmospheric environment, the above corrosion process is very slow, and the service of reinforced concrete The life span can reach 50-70 years

[0003] In the existing technology, such as Figure 1-3 In the foundation of offshore wind turbines, the environment near the coastline has the characteristics of high temperature, high humidity, strong wind force, and high concentration of salt spray. These characteristics can greatly accelerate the corrosion failure process of the above-mentioned reinforced concrete. In this environment, the common concrete Anti-corrosion methods cannot effectively seal capillaries, small pores and tiny cracks in concrete, and it is difficult to produce a good barrier effect on the penetration of corrosive media such as water and chloride ions, resulting in serious corrosion of steel bars inside the concrete structure. The mechanical properties such as tensile strength and elastic modulus of the concrete structure are greatly reduced, and the corrosion products of the steel bars will cause the concrete to crack, and the concrete will gradually lose its structural function, because the service life requirements of the foundation of the offshore wind turbine cannot be guaranteed

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