Corrosion is the destruction and deterioration of materials under the action of various environments. Metal corrosion is mainly caused by chemical corrosion and spot chemical corrosion, The corrosion of nonmetallic materials is usually caused by direct chemical and physical actions.
1.Forms of valve corrosion
There are two forms of metal valve corrosion: uniform corrosion and local corrosion.Uniform corrosion is carried out on the whole surface of the metal, and local corrosion occurs in the local position of the metal.
2.Anticorrosion measures of metal valve
To achieve the purpose of metal valve anti-corrosion, the first is to eliminate the electrochemical corrosion; the second is when the electrochemical corrosion cannot be eliminated; the third is to select non-metallic materials without electrochemical corrosion to replace metal materials
2.1 Select corrosion resistant materials according to medium
2.2 Non metallic materials are used
2.3 Spray paint
2.4 Add corrosion inhibitor
2.5 Electrochemical protection
2.6 Metal surface treatment
2.7 Thermal spraying
2.8 Control corrosion environment
2.9 Improve the processing technology and valve structure
Post time: Dec-08-2020