Why is the stainless steel coil oxidized? Treatment measures
Stainless steel coil has unique strength, high wear resistance, superior anti-corrosion performance and excellent characteristics such as not easy to rust. It is widely used in industry, food machinery, electromechanical industry, household appliance industry and home decoration, fine decoration industry. However, if used or stored improperly, stainless steel coils are also prone to oxidation and corrosion. So, what are the main factors that affect the oxidation of stainless steel coils? If the stainless steel coil is oxidized, how should we deal with it?
Several major factors for the oxidation of stainless steel coils
1. Production process:
One of the main features that distinguishes stainless steel coils from other metals is that there is a thin oxide film on its surface. This is the basic process to avoid oxidation of stainless steel coils. However, due to insufficient production technology or negligence in the production process, incomplete oxide film, discontinuity, and other problems will occur. In this way, oxygen in the air will directly oxidize with some metal elements in the stainless steel coil, resulting in oxidation of the stainless steel coil. The phenomenon of discoloration.
2. Material composition:
Supplier qualifications are uneven. In order to reduce production costs, some manufacturers reduce the content of important elements such as chromium and nickel during the production process. The quality of stainless steel coils made is greatly reduced, and the corrosion resistance and formability are not up to the country. standard. When this product is used in the chemical industry, equipment and some production industries, there will be certain safety hazards. In addition, it will also affect the appearance of the product and its anti-oxidation performance.
3. Human use:
Human factors are one of the most inevitable reasons for the oxidation of stainless steel coils. Some consumers improperly operate and maintain the stainless steel coils, which can easily cause oxidation of the stainless steel coils. For man-made oxidation phenomena, it is necessary to have the correct product use knowledge and regular and effective maintenance and maintenance of them, so as to reduce the oxidation phenomenon caused by improper use of man-made products.
Treatment of stainless steel coils after oxidation
1. If the stainless steel is only slightly corroded on the surface. It is recommended to wipe off the corroded part of the surface with steel wire ball and sandpaper.
2. If the corrosion is severe, sprinkle the edible alkali evenly on the corroded area. Wipe vigorously with a soft clean semi-dry cloth. Until the alkali sprinkled on the corroded surface is completely dissolved and the corroded area is restored to its original color.
3. You can also use a polisher to polish and remove the corrosion thickness of the stainless steel surface. The original color of stainless steel can be quickly restored by polishing. The maximum polishing rate is required to remove the damaged layer during polishing. This will not affect the organization that is ultimately observed. After removing the corroded part, the original color of stainless steel can continue to be maintained.