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What are the effective ways to prevent valve corrosion

by:Lianke Valve     2022-06-28
What are the effective methods for valve anti-corrosion? What are the effective methods for valve anti-corrosion? Let's take a look at the valve anti-corrosion 1. The corrosion of the valve is usually understood as the damage of the valve metal material under the action of chemical or electrochemical environment. Since the corrosion phenomenon occurs in the spontaneous interaction between the metal and the surrounding environment, how to isolate the metal from the surrounding environment or more use of non-metallic composite materials has become a common concern of people. 2. As we all know, the corrosion damage of metal has a considerable influence on the service life, reliability and service life of the valve. The effects of mechanical and corrosive factors on the metal greatly increase the total amount of wear on the contact surfaces. The total amount of wear on the friction surfaces of the valve during operation. During valve operation, the rubbing surfaces are worn and damaged as a result of the simultaneous mechanical action and chemical or electrochemical interaction of the metal with the environment. For valves, the climatic conditions of their pipelines are complex; the presence of hydrogen sulfide, carbon dioxide and some organic acids in media such as oil, natural gas and reservoir water increases the destructive power of the metal surface, thereby rapidly losing the ability to work. 3. Because the chemical corrosion of metal depends on the temperature, the mechanical load of the friction parts, the sulfide contained in the lubricating material and its stability against acid and the duration of contact with the medium and the catalytic effect of the metal on the nitriding process, corrosion immersion The conversion speed of the molecules of corrosive substances to metals, etc. Therefore, the anti-corrosion method (or measures) of metal valves and the application of synthetic material valves have become one of the topics of current valve industry research. 4. The anti-corrosion of metal valves can be understood as coating metal valves with a protective layer (such as paint, pigments, lubricating materials, etc.) , transportation, or during the entire process of its use is not corroded. 5. The method of anti-corrosion of metal valves depends on the required protection period, transportation and storage conditions, valve structure characteristics and materials, and of course, it is suitable to consider the economic effect of removing anti-corrosion. There are four main methods for anti-corrosion of metal valves and their parts: 1. Put volatile corrosion inhibitors into the atmosphere of steam (wrapped with anti-chemical paper, blowing to inhibit the air from passing through the product chamber, etc.). 2. Use blocked water and alcohol solutions. 3. Apply a thin layer of anti-corrosion (protection) material to the surface of the valve and its parts. 4. Coat the blocked film or polymer thin layer on the surface of the valve and its parts.
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