Does stainless steel grating still need maintenance? Stainless steel itself will not corrode. Not true! Stainless steel grating will still corrode and needs maintenance and care. Many domestic manufacturers for cost considerations, in the stainless steel grating raw materials to reduce the chromium, nickel, increased the content of manganese. Experts believe that the reason why stainless steel grating raw materials can not rust is because of the presence of chromium and nickel. Reducing the content of these two components will reduce the antirust performance.
Although the stainless steel grating is pickled and polished, it relies on the formation of a very thin but strong and dense stable chromium-rich oxide film (protective film) on its surface to prevent oxygen atoms from continuing to penetrate and continue to oxidize, and to obtain the ability to resist rust and corrosion. Once this film is continuously damaged for some reason. Oxygen atoms in the air or liquid will continue to precipitate out, the formation of loose iron oxide, stainless steel grating surface is also subject to continuous rusting.
Exposed in the corrosive environment of the stainless steel grating surface electrochemical reaction or chemical reaction, uniformly corroded, stainless steel grating raw material surface passivation film among the corrosion resistance of the weak parts. Due to the self-excited reaction and the formation of pitting corrosion reaction, the generation of small holes. Coupled with the proximity of chloride ions, the formation of a very strong corrosive solution accelerates the speed of corrosion reaction. There is also intergranular corrosion cracking within the raw material of stainless steel grating. All these, the passivation film on the surface of the stainless steel grating occurs destructive effects.
The air often carries a lot of dust, which constantly falls on the surface of the stainless steel grating. They can be removed with water or alkaline solution, however, dust and dirt with adhesion need to be cleaned by high-pressure water or steam.
In order to prevent process lubricants or generation and dirt accumulation, mechanical cleaning of scratches and other rough surfaces are generally removed with stainless steel special polishing machine.
When welders draw an arc on the surface of stainless steel grating, it can cause surface roughness defects. Protective film damage, these welding processes will leave tiny flux particles on the surface, ordinary cleaning methods can not remove them, this article will be a source of corrosion of the seam corrosion, mechanical cleaning methods must be used to remove this residual flux.
Therefore, the surface of stainless steel grating must be regularly cleaned and maintained to keep its gorgeous surface and extend its service life. Care must be taken not to scratch the surface when cleaning the surface of the stainless steel grating. Avoid the use of bleaching ingredients and abrasive cleaning solutions, steel wire balls, abrasive tools, etc. To get rid of the washing liquid, rinse the surface with clean water after the washing is finished.
Therefore, in order to use the stainless steel grating for a longer time, the stainless steel grating must undergo surface pickling and polishing treatment before leaving the factory. Not to do surface treatment will only shorten the use of stainless steel grating time, in the process of use should also do a good job of maintenance.
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