Seeking help with the rusting problem of 304 stainless steel!
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I’m asking the experts here: Why does 304 stainless steel rust on the equipment used in producing battery raw materials? It hasn’t been used for long. It’s not clear whether aluminum sulfate or something else is being produced. There is a lot of dust on site. Solve. . .
Stainless steel is not completely rust-proof either; it depends a lot on the operating environment.
Well, that’s the case, but it’s a bit strange – the areas that are rusted are the unprocessed surfaces, while the processed surfaces haven’t rusted. Logically, the processed surfaces should be more prone to rusting. Rust is not allowed at the site; what are some good solutions?
Stainless steel is just more corrosion-resistant than ordinary steel. If possible, it is recommended to perform surface treatment on stainless steel – passivation. In this way, the aforementioned problems will not occur.
Stainless steel 304 is not resistant to corrosion by dilute sulfuric acid anyway; it’s not clear to me whether you’re referring to a battery or a dry cell. In aqueous solutions with a low pH, the corrosive capacity of sulfates can be considered similar to that of dilute sulfuric acid.
Hello, you can try pickling and passivating the stainless steel to create a passivation film on its surface; this should make it less prone to rusting
Stainless steel can have an oxide film without acid washing or passivation
That’s too absolute of a statement. The corrosion of 304 in dilute sulfuric acid also depends on the concentration, temperature, and oxygen content.
The chloride content in the medium inside the equipment might be high; stainless steel is not corrosion-resistant in all types of media
Either it’s the surface that has been processed, or during the processing process the unprocessed areas get contaminated, which can lead to pitting; this phenomenon is quite common.
It’s different, dear. Modern stainless steel isn’t pure; if it’s not passivated, the presence of many impurities makes it prone to oxidation as well