Production method of anti-corrosion steel

Abstract

The invention discloses a production method of anti-corrosion steel. The production method of the anti-corrosion steel comprises the following steps: (1) cooling rolled steel on a factory production line; (2) conducting cleaning treatment on surfaces of the steel; (3) coating the steel with anti-corrosion paint, and conducting drying; and (4) conducting finished product inspection on the steel and coatings thereof, and conducting packaging, warehousing and delivery. According to the production method of the anti-corrosion steel, the steel produced on the production line is immediately coated with the anti-corrosion paint, thus each piece of steel is coated with one corresponding anti-corrosion coating before leaving a factory, moreover, it is guaranteed that the coatings have good performance, the steel cannot be rusted due to absence of protection before use, and cannot be rusted due to coating film damage, thus subsequent coating project can be directly carried out, rust removal processes are omitted, and not only can the rust removal cost be reduced to reduce environmental pollution, but also steel consumption can be reduced, so that the service lives of steel structures are prolonged.

Description

technical field [0001] The invention belongs to the technical field of steel products, in particular to a preparation method of anti-corrosion steel products. Background technique [0002] Corrosion will cause the loss of steel materials and the failure of equipment based on it, and will further cause major problems such as environmental pollution, explosions, and casualties. Anti-corrosion treatment is of great significance. [0003] At present, the anti-corrosion methods of steel substrates mainly include hot-dip galvanizing and electrophoresis. These methods need to derust the steel first. Hot-dip galvanizing and electrophoresis mainly rely on a series of cumbersome processes such as pickling and alkali cleaning, resulting in a large amount of energy. And material consumption, and will cause great pollution to the environment, especially the hot-dip galvanizing industry, the use of which has been restricted in most parts of the country. The use of anti-corrosion coating...

AI Technical Summary

Problems solved by technology

[0003] At present, the anti-corrosion methods of steel substrates mainly include hot-dip galvanizing and electrophoresis. These methods need to derust the steel first. Hot-dip galvanizing and electrophoresis mainly rely on a series of cumbersome processes such as pickling and alkali cleaning, resulting in a large amount of energy. and material consumption, and will cause great pollution to the environment, especially in the hot-dip galvanizing industry, which is currently restricted in most parts of the country

The use of anti-corrosion coatings for steel structure anti-corrosion is a relatively environmentally friendly method, but most anti-corrosion coatings also need to be derusted before painting. At present, sandblasting, shot blasting and manual derusting are mainly used, and the efficiency of manual derusting is low. , High labor costs, and incomplete rust removal, sandblasting and shot blasting will cause certain environmental pollution, and the process of sandblasting and shot blasting will cause certain damage to the steel structure itself

There are also many anti-corrosion coatings that can be painted with embroidery in the prior art, which are mainly aimed at substrates that have already been rusted. By adding various rust conversion agents to the anti-corrosion coatings, the rust of the substrate can be converted into passivation. However, on the one hand, such anti-corrosion coatings are realized through chemical reactions, and not all anti-corrosion coatings can achieve the expected rust conversion effect; on the other hand, after such anti-corrosion coatings are applied, Due to the complex composition, there is also the problem of whether it can cooperate with other subsequent coatings

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