How to deal with rust on stainless steel
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Excuse me, gentlemen: the screen frame is made of stainless steel 316L, but the operators used wire brushes for cleaning (which was stopped after it was noticed), and this caused some damage to the surface. After being used for a while, that area started to rust. What should be done in this situation?
It can be treated by pickling method, or it can also be processed by polishing method
Pickling is used, but the effect is not significant
First, use acid cleaning to remove dirt, and then apply electropolishing or mechanical polishing depending on the conditions on site. Polishers are also quite useful these days.
Should I polish to remove rust first, and then carry out acid washing and passivation? Is that okay?
Pickling is sufficient; there’s no need to polish first, and then passivate it
For this carburization process, grinding is usually required first; however, care must be taken to prevent splashing during grinding from causing further carburization, and the depth of grinding should not affect the wall thickness. After grinding, applying pickling paste for passivation is sufficient.
The acid wash after dilution will do
First, sand it with sandpaper, then pickle and passivate it
The rust that forms is due to the wire brush being made of carbon steel. It must be pickled before use.
Polishing is sufficient; pickling tends to cause mottling
Polishing should work, right? It’s still stainless steel after the rust is removed