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Tianjin stainless steel sheets possess the ability to resist oxidation in the atmosphere—that is, their rust resistance—and they also have the capability to resist corrosion in media containing acids, alkalis, and salts—that is, their corrosion resistance. However, its corrosion resistance varies depending on the chemical composition of the steel itself, its microstructure, operating conditions, and the type of environmental medium. Materials such as stainless steel sheets have excellent resistance to rusting in a dry and clean atmosphere, but when placed in coastal areas exposed to sea fog containing high levels of salt, they will rust very quickly ； Tianjin Stainless Steel, on the other hand, performed well. Therefore, not all stainless steels are resistant to corrosion and do not rust in any environment. Methods in Tianjin to prevent excessive stress at the solid-liquid interface during the initial stage of solidification of stainless steel sheets in Tianjin; organic substances such as juices from fruits and vegetables, noodle soup, sputum, etc., adhere to the surface of stainless steel. In the presence of water and oxygen, these substances form organic acids, which over time cause corrosion of the metal surface. In Tianjin, the surface cracks in stainless steel run across the thickness direction of the cast billet. In the central equiaxed crystal region, these cracks are fine cracks that follow the grain boundaries in a curvilinear pattern; the cracks on the inner arc side are generally straight cracks at the break points, while those on the outer arc side are typically grain-boundary cracks. Cracks along grain boundaries are stress cracks, whereas fracture-type cracks are destructive cracks that run across the grains and result from external forces. Tianjin stainless steel plates gain their corrosion resistance thanks to an extremely thin, strong, dense, and stable chromium-rich oxide film (protective layer) that forms on their surface, preventing further penetration of oxygen atoms and continued oxidation. Once, for some reason, this film is continuously damaged, oxygen atoms from the air or liquid will keep penetrating in, or iron atoms from the metal will continue to separate, forming loose iron oxide; as a result, the metal surface suffers from continuous rusting. There are many ways in which such surface films can be damaged. In everyday life, a common example is the accumulation on the surface of Tianjin stainless steel of dust or particles made up of other metal elements. In humid air, the condensation water between these particles and the stainless steel forms a microcell, triggering an electrochemical reaction that results in the damage to the protective film; this phenomenon is known as electrochemical corrosion. Improvement measures are taken to enhance the arc alignment accuracy of the casting machine; this helps to avoid excessive stress at the solid-liquid interface during the early stages of solidification, thereby preventing the formation of cracks along the grain boundaries ； Forced cooling is achieved by appropriately increasing the casting speed, raising the cooling water volume within a certain range, increasing the water flow rate, and lowering the water temperature ； Strictly control the composition of steel grades, especially the carbon content ； Increase continuous casting electromagnetic stirring, and keep the superheat of the ladle steel at below 40°C. www.tjbxgygang.com