Will the valve parts forgings have pits after long-term use?

After long-term use, valve parts forgings may indeed have dents, especially under the action of high temperature, high pressure, or corrosive media. Over time, the surface of valve components may be affected by various factors such as wear, impact, corrosion, or fatigue, resulting in the appearance of pits on the surface. In high temperature environments, the surface of metals may undergo oxidation or corrosion due to thermal stress and chemical reactions, causing damage to the material surface. Frequent switching, fluid flushing, or temperature fluctuations during long-term use can also exacerbate this phenomenon.
Although forgings usually have high strength and wear resistance, under extreme conditions, dents may still appear on the surface of the parts, especially in areas such as contact surfaces and sealing surfaces of valve parts that are susceptible to friction or fluid impact. To reduce this issue, valves are usually surface treated, such as coating, spraying, or heat treatment, to enhance their wear and corrosion resistance.