With the application of mold electric butterfly valve becoming more and more extensive, the requirements for the technicality of mold electric butterfly valve accessories and the diversity of products are also getting higher and higher. The corrosion of mold electric butterfly valve can be divided into chemical corrosion and electrochemical corrosion according to the type of reaction. They are all the result of the change of metal atoms on the surface of the butterfly valve or the change of electron gain and loss into ionic state.
The mold electric butterfly valve is slightly and slowly corroded by chemical corrosion, while the electrochemical corrosion is the main and common. But generally speaking, chemical corrosion and electrochemical corrosion exist at the same time.
The electric butterfly valve of mould is often corroded by the surrounding medium in the process of manufacturing, storage and use. Since the mold electric butterfly valve works by elastic force, the elastic force of the mold electric butterfly valve will change and lose its function after being corroded. Therefore, preventing the corrosion of the butterfly valve can ensure the stable operation of the butterfly valve and extend its service life.
The anti-corrosion method of mould electric butterfly valve generally adopts protective layer, which can be divided into metal protective layer, chemical protective layer, non-metallic protective layer and temporary protective layer according to the nature of the protective layer. The first three methods are mainly introduced here.
Stainless steel butterfly valve and copper wire butterfly valve have certain anti-corrosion capacity, so generally no anti-corrosion treatment is required.