Why are 8mm stainless steel ball bearings rusted?

Why are 8mm stainless steel ball bearings rusted? When brown rust spots (spots) appear on the surface of stainless steel pipes, people are surprised: "8mm stainless steel ball bearings are not rusty, and rust is not 8mm stainless steel ball bearings It may be a problem with the steel. " In fact, this is a one-sided wrong view of lack of understanding of 8mm stainless steel ball bearings.

8mm stainless steel ball bearings will also rust under certain conditions. Stainless steel has the ability to resist atmospheric oxidation--that is, stainless steel--and also has the ability to resist corrosion in media containing acids, alkalis, and salts--that is, corrosion resistance. However, the size of its corrosion resistance varies with the chemical composition of the steel itself, the mutual state, the conditions of use, and the type of environmental medium. For example, 304 steel pipe has absolutely excellent rust resistance in a dry and clean atmosphere, but it will be rusted quickly when it is moved to the seashore area in sea fog containing a large amount of salt; while 316 steel pipe is good. Therefore, not any kind of 8mm stainless steel ball bearings can be corrosion-resistant and rust-proof in any environment. 8mm stainless steel ball bearings is an extremely thin, firm and stable chromium-rich oxide film (protective film) formed on its surface, which prevents the oxygen atoms from infiltrating and continuing to oxidize, and obtains the ability to resist rust. Once for some reason, the film is constantly damaged, oxygen atoms in the air or liquid will continue to infiltrate or iron atoms in the metal will be continuously separated out, forming loose iron oxide, and the metal surface will be continuously rusted. This surface film is damaged in many forms, and the following are common in daily life:

1. 8mm stainless steel ball bearings has deposits of dust or other metal particles containing other metal elements on the surface. In humid air, The condensed water between the stainless steel and the two forms a micro battery, which triggers an electrochemical reaction and the protective film is damaged, which is called electrochemical corrosion.

2.Organic matter juices (such as vegetables, noodle soup, sputum, etc.) adhere to the surface of stainless steel. In the presence of water and oxygen, they form organic acids. For a long time, organic acids corrode the metal surface.

3.The surface of the 8mm stainless steel ball bearings contains acids, alkalis, and salts (such as alkaline water and lime water splashing from the wall), which may cause local corrosion.

4.In contaminated air (such as an atmosphere containing a large amount of sulfide, carbon oxide, and nitrogen oxide), when it meets condensed water, it forms sulfuric acid, nitric acid, and acetic acid liquid points, causing chemical corrosion. The above conditions can cause the damage of the 8mm stainless steel ball bearings surface protective film to cause corrosion.

Therefore, in order to ensure that the metal surface is permanently bright and not rusted, we recommend: 1. The decorative 8mm stainless steel ball bearings surface must be cleaned and scrubbed frequently to remove attachments and eliminate external factors that cause modification. 2. 316 stainless steel should be used in seaside areas. 316 can resist seawater corrosion. 3.Some 8mm stainless steel ball bearings pipes on the market cannot meet the national standards and cannot meet the requirements of 304 material. Therefore, it will also cause rust, which requires users to carefully choose products from reputable manufacturers.

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Contact: Grace
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