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Analysis of the influence of the post-treatment process of the galvanized packaging steel strip on the performance of the finished product
by：Hongmei
2021-03-15
Analysis of the influence of the post-treatment process of the finished galvanized packaging steel strip on the performance.
The application effect of galvanized steel strip meets modern needs, and it has been widely used as a building material today. Galvanized steel strip has the characteristics of no rust and corrosion resistance for many years. It can be protected from the external adverse environment and always maintain its own performance and appearance. In the process of using galvanized steel strip, in order to improve its operating efficiency and its own characteristics, the finished galvanized steel strip can be post-treated to make its performance better.
The post-treatment of galvanized steel strip includes three aspects: passivation, pre-phosphating and oiling. First, passivation treatment of galvanized steel strip can improve the surface structure and gloss of the galvanized layer, increase the corrosion resistance and service life of the galvanized layer, and improve the bonding force between the coating and the base metal. At present, the passivation treatment mainly adopts chromate passivation. Add some activators such as fluoride, phosphoric acid or sulfuric acid to the passivation solution, so that a thick chromate film can be obtained after passivation. When there is fluoride in the passivation solution, it can reduce the surface tension of the steel strip, accelerate the film-forming reaction, and increase the chemical polishing effect to make the passivation film fine and bright.
Through the above-mentioned method, the post-treatment technology of galvanized steel strip can make the product a higher level in terms of appearance and performance, and become a reliable building material with stronger application ability.
The application effect of galvanized steel strip meets modern needs, and it has been widely used as a building material today. Galvanized steel strip has the characteristics of no rust and corrosion resistance for many years. It can be protected from the external adverse environment and always maintain its own performance and appearance. In the process of using galvanized steel strip, in order to improve its operating efficiency and its own characteristics, the finished galvanized steel strip can be post-treated to make its performance better.
The post-treatment of galvanized steel strip includes three aspects: passivation, pre-phosphating and oiling. First, passivation treatment of galvanized steel strip can improve the surface structure and gloss of the galvanized layer, increase the corrosion resistance and service life of the galvanized layer, and improve the bonding force between the coating and the base metal. At present, the passivation treatment mainly adopts chromate passivation. Add some activators such as fluoride, phosphoric acid or sulfuric acid to the passivation solution, so that a thick chromate film can be obtained after passivation. When there is fluoride in the passivation solution, it can reduce the surface tension of the steel strip, accelerate the film-forming reaction, and increase the chemical polishing effect to make the passivation film fine and bright.
Through the above-mentioned method, the post-treatment technology of galvanized steel strip can make the product a higher level in terms of appearance and performance, and become a reliable building material with stronger application ability.
