What to do if 304 stainless steel rusts severely?
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On our stainless steel material, rust spots appear in the areas that have been polished and then welded, again. Even after cleaning with passivation paste, rust remains, and it stays there even after cleaning with a weld seam cleaner
Generate a spectrum and compare it with the material certificate. It’s likely that the material was adulterated.
I’ve just cut off the parts that were severely rusted and am preparing to send them for testing
For mechanical processing and equipment manufacturing companies like yours, the quality control department should be equipped with necessary testing tools, such as handheld spectrometers. Materials purchased need to be tested upon arrival; it’s not sufficient to rely solely on the supplier’s certification documents. Otherwise, it will consume time and effort, delay the manufacturing process, and affect delivery.
It’s likely there’s an issue with the material, or the welding material is not suitable.
Feel free to get in touch with me at 135-1168-5308
Some small businesses don’t follow proper procedures; they start rolling metal sheets without even using a handheld spectrometer to check the materials, which is absolutely outrageous. Larger companies, on the other hand, use more advanced spectrometers for testing, but they often end up in disputes with suppliers over issues related to the elements’ composition not meeting standards
It’s very likely that the welding material was used incorrectly; spectral analysis will suffice