There are many kinds of rust spots on stainless steel. The most common thing in life is air pollution. Sometimes the rain will be acid rain. Long-term acid rain will cause rust spots on the surface of stainless steel. To remove these rust spots, it is recommended to use vinegar, which is simple and convenient.
Everyone has it at home. Coarse salt is applied on the surface and soaked for a while. Then use makeup to erase. In general, life, if there are rust spots on the stainless steel surface we encounter, it is very convenient and practical to use this method.
For the rust spots produced by stainless steel used in industrial production, a relatively simple method is to soak the surface with dilute sulfuric acid or dilute hydrochloric acid to fully react the rusted surface with the acid, and then rinse it with clean water. This rust removal has a great advantage, that is, a passivation film will be formed on the surface of the stainless steel, making the stainless steel more resistant to corrosion.