Do valve parts forgings need regular anti-corrosion treatment?

Whether valve parts forgings need to undergo regular anti-corrosion treatment mainly depends on the working environment, fluid properties, and the corrosion resistance of the material itself. Although forged materials are usually stronger and more durable than cast materials, long-term exposure to harsh environments, especially corrosive media, may still be affected by corrosion and lead to performance degradation. Therefore, regular anti-corrosion treatment is an effective preventive measure that can extend the service life of valve components and maintain their stable performance.
Firstly, if the valve components are made of materials with good corrosion resistance such as stainless steel or alloy steel, a dense oxide film will usually form on their surface, which can resist general corrosion. However, when exposed to high temperature, high pressure, or corrosive fluids such as acids, bases, and salts for a long time, the corrosion resistance of these materials may be weakened, and the oxide film may be damaged, leading to gradual corrosion of the material surface. Therefore, even corrosion-resistant materials still need to undergo regular anti-corrosion treatment to enhance their corrosion resistance and avoid local corrosion or more severe corrosion damage.
For some special application environments, such as extreme environments such as seawater, strong acids or alkalis, anti-corrosion treatment of valve parts and forgings is particularly important. In these cases, valve components may not only have to withstand the erosion of corrosive fluids, but also face mechanical wear and high temperature effects. Therefore, regular anti-corrosion treatments such as spraying, plating, or hot-dip coating can effectively protect the surface of valve components and delay the corrosion process.
In addition, regular anti-corrosion treatment can also help reduce the accumulation of dirt and sediment. During long-term use, dirt, grease, or chemicals may accumulate inside and on the surface of the valve, which may accelerate the occurrence of corrosion. Therefore, anti-corrosion treatment can not only protect the metal surface, but also reduce wear and failure caused by corrosion, improve the sealing and operational reliability of valves.