What if the flange is scratched?

What if the flange is scratched?In the flange industry or industries that need to use flanges, we often encounter a problem: the flange is scratched. The scratches on the flange will not only affect the appearance, but also affect the sales. It is absolutely unacceptable for OCD patients. However, during the production, processing, packaging, transportation, unloading, installation and use of the flange, it is inevitable that the flange will be scratched if it is not paid attention to a little. In addition, it is also difficult to remove the black oxide skin produced by plasma cutting and flame cutting because of the limited pickling capacity. For the enterprises producing flanges, there are also equipment factors. During the bending and bending of profiles and plates, scratches and creases are also the main causes of scratches after treatment. So how to remove the scratches on the flange has become a big problem. Not only does the customer need to consider this issue when receiving the goods for use, but also when processing the flange. Let's talk about several ways to remove flange scratches. Difficult to remove scratches: the overall pickling and passivation can not remove all kinds of scratches generated in the processing process, and can not remove carbon steel, spatter and other impurities adhered to the flange surface due to scratches and welding spatter, resulting in chemical corrosion or electrochemical corrosion and rust in the presence of corrosive media. Sometimes there are serious scratches caused by human factors. How to deal with them? In the process of hoisting, transportation and structural processing, the scratches caused by collision, dragging and hammering are relatively serious, which makes the surface treatment more difficult, and is also the main cause of corrosion after treatment.