A lot of stainless steel screen after the surface blackened

Do you know the reason why the stainless steel screen appears black? Let's get to know it! Stainless steel screen in the use of the process will occasionally start black, what is the cause of this? This is still related to the composition of the original material, let's analyze it together.

The so-called stainless steel primary element is iron, nickel, chromium three, three kinds of metal can be produced in accordance with different proportions, stainless steel products also have different functions, the appearance is different. We can see that the reason for the blackening of stainless steel screen is not a single, in order to solve this problem, we need to solve it from many aspects. With the same iron content, the higher the chromium content, the brighter the stainless steel wire will be, and the higher the nickel content, the darker it will be. If the chromium and nickel content is unchanged, the content of the paste will also become dark if it increases, which is the judgment of the initial condition of the product appearance. If the blackening condition is caused by oxidation in use, it is the iron element contained in it that is heated and oxidized will quickly blacken, and there is no sign of rust. Another is that in the production process, the wire drawing machine is not smooth enough, the friction resistance is too large, the surface of the stainless steel wire is severe, resulting in the segregation of the metal elements in the steel wire, the alloy composition is separated, and then the appearance is black.