Stainless steel screen
No way, stainless steel screens can also rust? Yes, that’s right, stainless steel screens also experience rusting.
Let’s first understand the main factors that affect the corrosion of stainless steel screens compared to non decorative ones.
1. The content of alloying elements
Generally speaking, the higher the chromium nickel content, the better the corrosion resistance. Steel with a chromium content of 10.5% is less prone to rusting. Like 304 stainless steel, with a nickel content of 8-10% and a chromium content of 18-20%, it generally does not rust.
2. Smelting process
Large scale stainless steel plants have good smelting technology, advanced equipment, and advanced processes. They can ensure the control of alloy elements, removal of impurities, and control of steel billet cooling temperature. Therefore, the product quality is relatively stable and reliable, and is not easy to rust. On the other hand, in some small steel mills, due to outdated equipment and processes, impurities cannot be removed or cannot be completely removed during the smelting process, and the products are inevitably prone to rusting.
3. External environment
In a dry and well ventilated environment, stainless steel screens are naturally less prone to rusting. However, environments with high humidity or high acidity or alkalinity in the air can easily cause stainless steel screens to rust. If the surrounding environment is too poor, even 304 stainless steel will rust.
Next, Zhongyu Metal Products will tell you how to deal with rust spots on stainless steel screens.
1. Chemical methods
Use acid cleaning paste or spray to assist the rusted parts to passivate again to form chromium oxide film, so as to restore the corrosion resistance. After acid washing, it is very important to rinse with clean water appropriately in order to remove all pollutants and acid residues. After all processing, use polishing equipment to re polish and seal with polishing wax.
2. Mechanical methods
It is possible to use mechanical methods to wipe away contamination caused by previously removed materials, polishing materials, or buried materials. All kinds of pollution, especially foreign iron particles, can become sources of corrosion, especially in humid environments. Therefore, it is best to perform formal cleaning on mechanical cleaning surfaces under dry conditions. The use of mechanical methods can only clean its surface and cannot change the corrosion resistance of the material itself. Therefore, it is recommended to re polish with polishing equipment after mechanical cleaning and seal with polishing wax.
