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Why should stainless steel industrial pipes be passivated?

Edit:Shaanxi Tonghui Steel Co., Ltd.UpDate:2020-03-31

Doesn't Xi'an stainless steel industrial pipe rust? Why do we need to passivate? What is passivation?

These problems come from many customers who do not know much about stainless steel. The editor of ZTE Yide will explain these problems today.

The reason why stainless steel has to be passivated is not because stainless steel does not rust, but rather slower than other steels.

The reason why stainless steel can prevent rust is that stainless steel is added with metal elements such as chromium and nickel, and its composition is relatively high, which is easy to oxidize to become a high-density passivation film and develop an anti-rust effect. Therefore, the stainless steel's rust resistance is relatively good.

Xi'an stainless steel industrial pipes in certain environments, such as coastal areas, or wet warehouses, or open places, or coal mines, or contact with other acid and alkali agents and other products, the chloride ions generated can easily penetrate the stainless steel passivation film Stainless steel will gradually corrode and rust over time, this time shows that stainless steel does not mean that it will not rust.

Therefore, stainless steel needs to be passivated, and a passivation film is formed on the original antirust base. The stainless steel after passivation treatment can improve the original antirust base by 3-8 years, greatly reducing the chance of stainless steel rust.

Passivation treatment uses the oxidizing chemical reaction between the oxidizing substances in the stainless steel passivation solution and stainless steel to promote the formation of a layer of high-density on the surface of stainless steel, and a passivation film with good coverage and strong adsorption on the surface to effectively protect stainless the goal of.

This process of Xi'an stainless steel industrial pipe is a chemical reaction. The passivation film formed is dense and complete, and will not be easily damaged. This prolongs the service life of stainless steel, effectively protects the surface of stainless steel, and makes stainless steel more resistant to corrosion!