304 stainless steel plate is made of stainless steel, it will not rust, and it is also very strong. It is a common steel plate. Of course, it may be whitened in some special projects. But how is this whitening done?
1. What is the whitening treatment? Refers to the 304 stainless steel plate in the process of processing, which will be rolled, edged, welded, or heated by artificial surface fire, resulting in the removal of black oxide scale, the whitening treatment of traditional stainless steel surface is generally used hydrofluoric acid and nitric acid Corrosion method to remove, but this method is costly and pollutes the environment.
2. At present, there are sandblasting methods and chemical methods for the surface oxide scale treatment of 304 stainless steel plates. Sandblasting method: mainly uses the method of spraying micro glass beads to remove the black oxide scale on the surface. Chemical method: use a non-polluting pickling passivation paste and a non-toxic cleaning solution with inorganic additives at room temperature for dipping, so as to achieve the purpose of whitening the natural color of stainless steel, and it basically looks dull after treatment. This method is more suitable for large and complex products.
304 stainless steel plates may produce a certain amount of oxide scale in some processes. At this time, we can carry out whitening treatment. Sandblasting and chemical treatment are more appropriate methods.