The problem of rust appearing on stainless steel sheets
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Has anyone ever encountered large-scale rusting on stainless steel sheets? How was it dealt with? Can pickling be used to solve this problem?
1. The environment in which stainless steel is used has specific requirements; it also needs to be wiped regularly to remove dust and kept clean and dry. 2. A hot nitric acid solution with a concentration of 30-40% can be used; apply it and wait about 5 minutes before rinsing with clean water. A higher temperature yields better results, but it should not exceed 70 degrees. 3. If the area is not large and the rusting is not severe, you can try using Wu Jie powder; it works well. There is slight rusting; if friction is a concern, you can use a soft cloth dipped in toothpaste to clean it, which will also help polish it. 4. It is necessary to determine what type of stainless steel it is, whether inferior materials are being used in place of high-quality ones, and whether the model matches the specified one, etc.
In chemical manufacturing enterprises, stainless steel is treated with passivation before use: it is first cleaned and soaked in an alkaline solution, then its surface is passivated using a passivation paste, and finally it is washed with clean water, which helps to improve its resistance to oxidation. The most important thing is to choose the right stainless steel material.