Thin-walled stainless steel pipes rely on a very thin but extremely strong, dense, and reliable chromium-rich oxide protective film on the surface to prevent oxygen atoms from penetrating into the steel pipe, thereby obtaining anti-oxidation properties. However, in some cases, this film is continuously damaged, and oxygen atoms in the air or liquid will continue to penetrate or iron atoms in the metal will continue to precipitate, forming loose iron oxide, and the metal surface will continue to oxidize. When the surface of the steel pipe is oxidized, oxide enrichment will be formed, and once it reaches a certain scale, further oxidation will be significantly slowed down. So, what are the reasons for the oxidation of thin-walled stainless steel pipes?
1. Production process of thin-walled stainless steel pipes
This is one of the reasons for the oxidation of stainless steel products. From the perspective of production process and product characteristics, forming a thin oxide film on the surface of the product is the basic process to avoid oxidation, and it is also one of the main characteristics that distinguish stainless steel from other steel products. However, when the oxide film is incomplete and discontinuous due to an insufficient or negligent production process, the oxygen in the air directly undergoes an oxidation-reduction reaction with some elements in the pipe, resulting in the oxidation of the product.
2. Product composition ratio of thin-walled stainless steel pipes
In order to reduce production costs, some manufacturers reduce the proportion of some important elements such as chromium and nickel, and increase the content of other elements, such as carbon. This production phenomenon of not strictly following the thin-walled stainless steel pipe model and product characteristics to mix the components not only greatly reduces the product quality, but also affects the appearance and antioxidant properties of the product. For example, when the chromium content of 304 stainless steel pipe is insufficient, it not only affects the corrosion resistance and formability of the product but also poses a product quality risk when used in industry.
3. Human factors of thin-walled stainless steel pipes
This is also one of the reasons for product oxidation that some consumers often encounter when using thin-walled stainless steel pipes. Some consumers operate improperly during product use and maintenance, especially some stainless steel pipe products used in the food and chemical equipment industry have a high probability of artificial oxidation. For artificial oxidation phenomena, it is necessary to have correct product use knowledge and regular and effective maintenance and maintenance.
The above is the content of the reasons for the oxidation of thin-walled stainless steel pipes. The reasons for the oxidation of steel pipes include the production process; reducing anti-oxidation elements such as chromium and nickel, increasing the carbon content; improper use, and maintenance. Therefore, manufacturers must pay attention to the ingredient ratio when producing thin-walled stainless steel pipes; secondly, choose a suitable production process to prevent oxidation; in addition, there are some issues related to use and maintenance, and it is necessary to use the products correctly and maintain the pipes regularly.
Post time: Apr-28-2025