What are the quality standards for high-pressure water cleaning?
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What are the quality standards for high-pressure water cleaning? Is it considered acceptable if floating rust forms after cleaning?
\"Quality Standards for Chemical Cleaning of Industrial Equipment\" HG-T2387—92.pdf (286 K)
High-pressure water cleaning is a form of physical cleaning! What was mentioned above refers to chemical cleaning.
High-pressure water? I mean, I know that high-pressure cleaning water is used in papermaking, and generally a filter is used for simple filtration; I don’t know anything else about it
After that, just apply a chemical pre-coating and it’s done
There are currently no standards for high-pressure water cleaning; physical cleaning can generally be inspected visually, so visual inspection is sufficient. Floating rust usually results from high-pressure water cleaning, which exposes the metal surface to cleaning actions. The cleaned metal surface is highly reactive and thus very prone to oxidation, leading to the formation of floating rust. The presence of floating rust indicates that it has been cleaned thoroughly. Inspection is best carried out immediately after cleaning is completed. Industry insiders
Our company typically sets the cleaning and descaling rate at 80-90%. The actual construction cost is generally higher than this; otherwise, the client will not approve it.
If the surface rust has no impact on the manufacturing process, it may not need to be treated.
The surface rust appears after cleaning and is likely unrelated to the cleaning process; a pre-coating treatment can be applied after cleaning, and NA2S can reduce ferric ions to their trivalent form
After washing, spray rust preventive paint on both ends.
Even if it’s washed very clean, superficial measures still need to be taken. This is in line with our country’s conditions
When it comes to cleaning, floating rust is almost inevitable after high-pressure cleaning, unless you use a nitrite solution for cleaning; but life is important